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Mikami Yoshiki
三上　欣希
Mikami Yoshiki
三上　欣希
Institutional repository
Joining and Welding Research Institute, Professor

keyword Welding Mechanics，Welding and Joining

Institutional repository

Research History 6

  1. 2021/10 - Present
    Osaka University　Joining and Welding Research Institute　Professor

  2. 2017/04 - 2021/09
    Osaka University　Joining and Welding Research Institute　Associate Professor

  3. 2016/06 - 2017/03
    Osaka University　Division of Materials and Manufacturing Science, Graduate School of Engineering　Associate Professor

  4. 2008/04 - 2016/05
    Osaka University　Division of Materials and Manufacturing Science, Graduate School of Engineering　Assistant Professor

  5. 2007/04 - 2008/03
    Osaka University　Pipeline Engineering Joint Research Chair, Graduate School of Engineering,　Specially Appointed Assistant Professor

  6. 2006/04 - 2007/03
    Osaka University　Graduate School of Engineering　Specially Appointed Researcher

Education 3

  1. Osaka University　Graduate School of Engineering　Division of Materials and Manufacturing Science

    2004/04 - 2006/03

  2. Osaka University　Graduate School of Engineering　Department of Manufacturing Science

    2002/04 - 2004/03

  3. Osaka University　School of Engineering　Department of Mechanical, Materials and Manufacturing Science

    1998/04 - 2002/03

Professional Memberships 5

  1. The Iron and Steel Institute of Japan

  2. Japanese Society of Steel Construction

  3. Japan Society of Civil Engineers

  4. The Japan Society of Mechanical Engineers

  5. Japan Welding Society

Research Areas 3

  1. Nanotechnology/Materials / Material fabrication and microstructure control /

  2. Social infrastructure (civil Engineering, architecture, disaster prevention) / Structural and seismic engineering /

  3. Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Machine materials and mechanics /

Awards 13

  1. Journal of Testing and Evaluation Best Paper Award

    Yoshiki Mikami　ASTM International　2022/09

  2. 支部長特別賞

    三上 欣希　（一社）溶接学会 関西支部　2021/06

  3. Excellent Presentation Award

    YAMAMOTO Hajime, DANNO Yoshikazu, ITO Kazuhiro, MIKAMI Yoshiki, FUJII Hidetoshi　International Symposium on Creation of Life Innovation Materials for Interdiscriplinary and International Researcher Development Satellite (iLIM-s)　2019/11

  4. 大阪大学賞（若手教員部門）

    三上 欣希　大阪大学　2018/11

  5. 平成29年度溶接学会優秀研究発表賞

    段野 芳和, 山本 啓, 伊藤 和博, 三上 欣希, 小濱 和之　（一社）溶接学会　2017/12

  6. Professor Koichi Masubuchi Award

    Yoshiki Mikami　The American Welding Society　2017/11

  7. 溶接学会論文賞

    三上 欣希　（一社）溶接学会　2017/04

  8. 関西原子力懇談会 優秀発表賞

    2010

  9. 溶接学会 溶接冶金研究委員会 第11回 優秀研究賞

    2010

  10. Henry Granjon Prize (Category C: Design and structural integrity)

    International Institute of Welding (IIW)　2007/07

  11. 21世紀COEプログラム「構造・機能先進材料デザイン研究拠点の形成」第4回シンポジウム 最優秀ポスター賞

    2006

  12. 溶接学会 論文奨励賞

    2006

  13. 溶接学会 研究発表賞

    2004

Papers 211

  1. Reverse Bend Experiments on the Base Plate and Discussion of the Appropriate Amount of Reverse Bending for Precrack Straightness (Effect of the Reverse Bend Process on the CTOD Toughness Evaluation and Understanding of Its Mechanisms)

    Tomoya Kawabata, Hoichi Kitano, Takumi Ozawa, Yoshiki Mikami

    Theoretical and Applied Fracture Mechanics　Vol. 37　2025/02/13　Research paper (scientific journal)

  2. Residual Stress Characteristics in Spot Weld Joints of High-Strength Steel: Influence of Welding Parameters

    Wonjun Jo, Insu Woo, Yoshiki Mikami, Gyubaek An

    Applied Sciences　2024/12/20　Research paper (scientific journal)

  3. Compressive Residual Stress Applied to a Low-carbon Steel Surface Alloyed with WC Tool Constituent Elements According to Friction Stir Processing

    Hajime Yamamoto, Yuji Yamamoto, Kazuhiro Ito, Yoshiki Mikami

    Materials & Design　Vol. 244　p. 113225-113225　2024/08　Research paper (scientific journal)

    Publisher: Elsevier BV

  4. Weld heat conduction and its mechanical effects

    MIKAMI Yoshiki, OKANO Shigetaka

    Journal of the Japan Welding Society　Vol. 93　No. 4　p. 234-242　2024/06

  5. Proposal of New Decision Method for Temperature Control Time in Fracture Toughness Test

    Takumi Ozawa, Tomoya Kawabata, Yoshiki Mikami

    ISIJ International　2023/12/15　Research paper (scientific journal)

  6. Improvement of local compression condition for fracture toughness test with Bayesian optimization

    Takumi Ozawa, Tomoya Kawabata, Yoshiki Mikami

    Welding in the World　Vol. 67　p. 2315-2322　2023/08　Research paper (scientific journal)

  7. Adapted to generate compressive residual stress and retained austenite in a steel surface layer by friction stir processing with the WC tool

    Hajime Yamamoto, Yuji Yamamoto, Kazuhiro Ito, Yoshiki Mikami

    IIW-XI-L, Annual Assembly 2023　2023/07　Research paper (international conference proceedings)

  8. Local compression process avoiding toughness change

    Takumi Ozawa, Hiroaki Kosuge, Tomoya Kawabata, Yoshiki Mikami

    Welding in the World　Vol. 67　No. 3　p. 607-615　2023/03　Research paper (scientific journal)

    Publisher: Springer Science and Business Media LLC

  9. Technical Commission on Welded Structure

    Mitsuyoshi Nakatani, Mitsuru Ohata, Hiroshi Shimanuki, Ninshu Ma, Yoshiki Mikami, Masakazu Shibahara, Shigetaka Okano, Kazuki Ikushima, Hiroto Shoji

    Yosetsu Gakkai Shi/Journal of the Japan Welding Society　Vol. 92　No. 5　p. 334-345　2023　Research paper (scientific journal)

  10. 破壊靭性試験前処理による溶接残留応力変化挙動を追跡可能な一貫解析

    三上 欣希

    日本船舶海洋工学会誌 KANRIN　Vol. 18　No. 4　p. 26-32　2022/07

  11. Quantitative evaluation of fracture toughness deterioration due to Pre-strain

    Takumi Ozawa, Tomoya Kawabata, Yoshiki Mikami

    Engineering Fracture Mechanics　Vol. 272　p. 108683-108683　2022/07　Research paper (scientific journal)

    Publisher: Elsevier BV

  12. Proposal of New MOTE Methods for Brittle Fracture Toughness Determination

    Takumi Ozawa, Tomoya Kawabata, Yoshiki Mikami

    ISIJ International　Vol. 62　No. 6　p. 1301-1311　2022/06　Research paper (scientific journal)

    Publisher: Iron and Steel Institute of Japan

  13. A Preface - Recent Topics on Repair, Reinforcement and Defect Detection of Welded Structures

    MIKAMI Yoshiki, INOSE Koutarou, SHIMANUKI Hiroshi, MURAKAMI Hiroki

    JOURNAL OF THE JAPAN WELDING SOCIETY　Vol. 91　No. 2　p. 104-104　2022/03/05

    Publisher: JAPAN WELDING SOCIETY

  14. Constructing a heat source parameter estimation model for heat conduction finite element analysis using deep convolutional neural network

    Houichi Kitano, Yoshiki Mikami

    Materials Today Communications　Vol. 31　2022/03　Research paper (scientific journal)

  15. Fatigue strength improvement due to alloying steel weld toes with WC tool constituent elements through friction stir processing

    Hajime Yamamoto, Shodai Koga, Kazuhiro Ito, Yoshiki Mikami

    The International Journal of Advanced Manufacturing Technology　Vol. 119　No. 9-10　p. 6203-6213　2022/01　Research paper (scientific journal)

    Publisher: Springer

  16. Microstructure Features and Formation Mechanism in a Newly Developed Electroslag Welding

    Tomonori KAKIZAKI, Shodai KOGA, Hajime YAMAMOTO, Yoshiki MIKAMI, Kazuhiro ITO, Kei YAMAZAKI, Shuji SASAKURA, Hirohisa WATANABE

    Welding in the World　Vol. 66　No. 2　p. 1-12　2021/11　Research paper (scientific journal)

    Publisher: Springer

  17. Feature of microstructure and its formation mechanism in a newly developed electro slag welding

    Tomonori Kakizaki, Shodai Koga, Hajime Yamamoto, Yoshiki Mikami, Kazuhiro Ito, Kei Yamazaki, Shuji Sasakura, Hirohisa Watanabe

    Proceedings of The 74th IIW on-line Assembly & International Conference　Vol. IX-L-1237-2021　2021/07　Research paper (international conference proceedings)

  18. Simplified prediction method of Stress Intensity Factor in mid-thick plane in 3D cracked body and its difference from 2D handbook formula

    Tomoya Kawabata, Hiroaki Kosuge, Takumi Ozawa, Yoshiki Mikami

    Journal of Testing and Evaluation　Vol. 50　No. 1　2021/06　Research paper (scientific journal)

  19. Typical local compression effect on crack front straightness and fracture toughness

    Takumi Ozawa, Hiroaki Kosuge, Yoshiki Mikami, Tomoya Kawabata

    Welding in the World　Vol. 65　No. 9　p. 1777-1790　2021/04　Research paper (scientific journal)

    Publisher: Springer Science and Business Media LLC

  20. Experimental proof of reverse bending technique for modifying weld residual stress in weld CTOD specimen and comparison of effect with other techniques

    Tetsuya Tagawa, Yasushi Morikage, Takahiro Kubo, Tsunehisa Handa, Yoshiki Mikami, Tomoya Kawabata

    Journal of Testing and Evaluation　Vol. 49　No. 6　2021/04　Research paper (scientific journal)

  21. Consideration of the Effect of Residual Stress Distribution in Performance Evaluation of Welded Joints and Its Issues

    Yoshiki MIKAMI

    Journal of Smart Processing　Vol. 10　No. 1　p. 20-25　2021/01

  22. Numerical Simulation on Effect of Microstructure on Hydrogen-induced Cracking Behavior in Duplex Stainless Steel Weld Metal

    Gen Ogita, Koki Matsumoto, Masahito Mochizuki, Yoshiki Mikami, Kazuhiro Ito

    ISIJ International　Vol. 61　No. 4　p. 1236-1244　2020/11　Research paper (scientific journal)

    Publisher: Iron and Steel Institute of Japan

  23. Evaluation of Hydrogen-induced Cracking Behavior in Duplex Stainless Steel by Numerical Simulationof Stress and Diffusible Hydrogen Distribution at the Microstructural Scale

    Gen Ogita, Koki Matsumoto, Masahito Mochizuki, Yoshiki Mikami, Kazuhiro Ito

    ISIJ International　Vol. 61　No. 4　2020/11　Research paper (scientific journal)

  24. Integrated Simulation of Fracture Toughness Testing Process in Consideration of Weld Residual Stress

    MIKAMI Yoshiki

    Journal of the Japan Welding Society　Vol. 89　No. 7　p. 494-498　2020/10

  25. Technical commission on welded structure

    Masahito Mochizuki, Masakazu Shibahara, Seiichiro Tsutsumi, Yoshiki Mikami, Kazuki Ikushima, Shigetaka Okano

    Yosetsu Gakkai Shi/Journal of the Japan Welding Society　Vol. 89　No. 5　p. 358-365　2020/07

  26. A unique CEL numerical method on material flow in a molten pool of workpiece vibration assisted welding

    H. Hamed Zargari, K. Ito, Y. Mikami, A. Sharma

    Quarterly J. Japan Welding Soc.　Vol. 38　No. 2　p. 54s-58s　2020/06　Research paper (scientific journal)

  27. Application of welding residual stress simulation for enhancement of fracture toughness test of welds

    Yoshiki Mikami

    Inspection Engineering　Vol. 25　No. 5　p. 61-64　2020/05

  28. A Preface

    JOURNAL OF THE JAPAN WELDING SOCIETY　Vol. 89　No. 7　p. 476-476　2020

    Publisher: JAPAN WELDING SOCIETY

  29. Numerical simulation of hydrogen diffusion behavior with thermal and stress changes in resistance spot welds

    Nao Kawabe, Hiroshi Matsuda, Yasuaki Okita, Rinsei Ikeda, Yoshiki Mikami, Masahito Mochizuki

    Proceedings of National Symposium on Welding Mechanics and Design 2019　p. 314-320　2019/12　Research paper (conference, symposium, etc.)

  30. Numerical Simulation on Effect of Microstructure on Hydrogen-induced Cracking Behavior in Duplex Stainless Steel Weld Metal

    Gen Ogita, Koki Matsumoto, Masahito Mochizuki, Yoshiki Mikami, Kazuhiro Ito

    Tetsu-to-Hagane　Vol. 106　No. 4　2019/12　Research paper (scientific journal)

  31. Evaluation of Hydrogen-induced Cracking Behavior in Duplex Stainless Steel by Numerical Simulationof Stress and Diffusible Hydrogen Distribution at the Microstructural Scale

    Gen Ogita, Koki Matsumoto, Masahito Mochizuki, Yoshiki Mikami, Kazuhiro Ito

    Tetsu-to-Hagane　Vol. 106　No. 4　2019/12　Research paper (scientific journal)

  32. Numerical simulation of microscopic residual stress evolution in polycrystalline aggregate subjected to weld thermal cycle

    Y. Mikami, W. Sadakane, M. Mochizuki

    Welding in the World　Vol. 64　No. 1　p. 105-114　2019/11　Research paper (scientific journal)

    Publisher:

  33. Hydrogen diffusion simulation model considering thermal and stress changes in spot welds

    Nao Kawabe, Hiroshi Matsuda, Yasuaki Okita, Rinsei Ikeda, Yoshiki Mikami, Masahito Mochizuki

    Quarterly Journal of the Japan Welding Society　Vol. 37　No. 3　p. 125-132　2019/07　Research paper (scientific journal)

  34. Direct application of friction stir processing to weld toes of high-strength low-alloy steel joints

    Hajime Yamamoto, Yoshikazu Danno, Kazuhiro Ito, Yoshiki Mikami, Hidetoshi Fujii

    Proceedings of TMS 2019　2019/03　Research paper (international conference proceedings)

  35. Hydrogen diffusion simulation model considering thermal and stress changes in sport welds.

    Nao Kawabe, Hiroshi Matsuda, Yasuaki Okita, Rinsei Ikeda, Yoshiki Mikami, Masahito Mochizuki

    Welding International　Vol. 33　No. 4-6　p. 135-149　2019　Research paper (scientific journal)

    Publisher: Taylor and Francis Ltd.

  36. Through Process Modeling of the Fracture Toughness Test of Multipass Welds Incorporating Residual Stress Distribution

    Yoshiki Mikami, Houichi Kitano, Tomoya Kawabata

    Procedia Structural Integrity　Vol. 13　p. 1804-1810　2018/12　Research paper (scientific journal)

  37. Weld toe modification using spherical-tip WC tool FSP in fatigue strength improvement of high-strength low-alloy steel joints

    Hajime Yamamoto, Yoshikazu Danno, Kazuhiro Ito, Yoshiki Mikami, Hidetoshi Fujii

    Materials & Design　Vol. 160　p. 1019-1028　2018/12　Research paper (scientific journal)

    Publisher: Elsevier BV

  38. Assessment of Finite Element Analysis of Load Mode (Bending vs. Tension) Effects for Mitigation of Judgment on Pop-ins Caused by Splits

    Sohei Kanna, Yoichi Yamashita, Tomoya Kawabata, Tetsuya Tagawa, Yasuhito Imai, Yoshiki Mikami, Houichi Kitano, Yoichi Kayamori, Tomoyuki Tonan, Tsuyoshi Sakurai, Shigetoshi Kyono, Mitsuru Ohata, Fumiyoshi Minami, Shuji Aihara, Yukito Hagihara

    Engineering Fracture Mechanics　Vol. 205　p. 28-39　2018/10　Research paper (scientific journal)

  39. 浪速博士の溶接がってん！応力腐食割れって何？の巻

    三上 欣希

    (一社)日本溶接協会 WE-COMマガジン　2018/10

  40. Investigation on η and m Factors for J Integral I SE(B) Specimens

    T. Kawabata, T. Tagawa, Y. Kayamori, Y. Mikami, H. Kitano, T. Tonan, Y. Imai, S. Kanna, T. Sakurai, S. Kyono, M. Ohata, S. Aihara, F. Minami, H. Mimura, Y. Hagihara

    Theoretical and Applied Fracture Mechanics　Vol. 97　p. 224-235　2018/08　Research paper (scientific journal)

  41. Application of Friction Stir Processing to Weld Toe for Fatigue Strength Improvement of High-strength Low-alloy Steel Joint

    Hajime Yamamoto, Yoshikazu Danno, Kazuhiro Ito, Yoshiki Mikami, Kazuyuki Kohama, Hidetoshi Fujii

    Welding Letters　Vol. 36　No. 4　p. 1 WL-4 WL　2018/03　Research paper (scientific journal)

  42. Residual stress modification by reverse bending in fracture toughness test specimen of multipass welds

    Yoshiki Mikami, Masahito Mochizuki, Tomoya Kawabata

    p. 333-340　2017/12　Research paper (conference, symposium, etc.)

  43. Numerical simulation of residual stress modification by reverse bending of notched fracture toughness test specimens of multipass welds

    Yoshiki Mikami, Tomoya Kawabata, Tetsuya Tagawa, Houichi Kitano, Akira Kiuchi, Yoichi Kayamori, Sohei Kanna, Tsuyoshi Sakurai, Yasuhito Imai, Mitsuru Ohata, Masahito Mochizuki, Fumiyoshi Minami, Shuji Aihara, Yukito Hagihara

    Theoretical and Applied Fracture Mechanics　Vol. 92　p. 214-222　2017/12　Research paper (scientific journal)

    Publisher: Elsevier

  44. Effect of weld toe geometry on reduction of residual stress by low-transformation-temperature welding wire

    Yoshiki Mikami, Kazushi Tanigawa, Houichi Kitano, Terumi Nakamura, Masahito Mochizuki

    p. 427-434　2017/12　Research paper (other academic)

  45. Numerical analysis of crack opening and closure behavior in steel with microscopic strength and residual stress distributions

    Takehiro Taguchi, Yoshiki Mikami, Hiroshi Shimanuki, Masahito Mochizuki

    p. 303-310　2017/12　Research paper (other academic)

  46. Numerical simulation of hydrogen diffusion behavior considering microstructure of duplex stainless steel weld metal

    Yuhei Shibamoto, Gen Ogita, Yoshiki Mikami, Masahito Mochizuki

    p. 387-394　2017/12　Research paper (other academic)

  47. Numerical modeling of diffusible hydrogen localization in duplex stainless steel weld metal

    Y. Mikami, Y. Shibamoto, G. Ogita, K. Ito, M. Mochizuki

    Proceedings of WSE & CAWE 2017　p. 145-148　2017/10　Research paper (international conference proceedings)

  48. III 溶接構造研究委員会（溶接・接合をめぐる最近の動向 / 第II部 溶接・接合工学の最近の動向）

    三上 欣希

    溶接学会誌　Vol. 86　No. 5　p. 375-381　2017/07

    Publisher: (一社)溶接学会

  49. 応力場および材料組織を考慮した水素拡散・集積挙動のシミュレーション（溶接・接合をめぐる最近の動向 / 第II部 溶接・接合工学の最近の動向 II 溶接冶金現象のシミュレーションと可視化 ?溶接冶金研究委員会?）

    望月 正人, 三上 欣希

    溶接学会誌　Vol. 86　No. 5　p. 372-373　2017/07

    Publisher: (一社)溶接学会

  50. Numerical simulation of hydrogen diffusion and accumulation behavior under residual stress distribution in resistance spot welds

    Takeharu Kizaki, Yoshiki Mikami, Nao Kawabe, Hiroshi Matsuda, Rinsei Ikeda, Masahito Mochizuki

    Quarterly Journal of the Japan Welding Society　Vol. 35　No. 2　p. 108s-111s　2017/07　Research paper (scientific journal)

    Publisher:

  51. Numerical simulation of relationship between member dimension and weld-induced stress in plate-fin type heat exchanger

    Shunta Yamagishi, Yoshiki Mikami, Kenji Otani, Norihiro Hisada, Shigeru Aoki, Masahito Mochizuki

    Quarterly Journal of the Japan Welding Society　Vol. 35　No. 2　p. 72s-75s　2017/07　Research paper (scientific journal)

    Publisher:

  52. Modeling of hydrogen diffusion behavior considering the microstructure of duplex stainless steel weld metal

    Yuhei Shibamoto, Yoshiki Mikami, Masahito Mochizuki

    Quarterly Journal of the Japan Welding Society　Vol. 35　No. 2　p. 23s-27s　2017/07　Research paper (scientific journal)

    Publisher:

  53. 溶接シミュレーションを活用した機械・構造物設計

    望月 正人, 三上 欣希

    2016/12　Research paper (other academic)

  54. 微視的応力場の数値解析に基づく応力腐食割れ発生特性の検討

    三上 欣希

    2016/11　Research paper (other academic)

  55. Numerical simulation of localized distribution of stress and diffusible hydrogen related to cold cracking in high-strength-steel weld metal

    Yoshiki Mikami, Nao Kawabe, Nobuyuki Ishikawa, Masahito Mochizuki

    Proceedings of 10th International Conference on Trends in Welding Research & 9th International Welding Symposium of Japan Welding Society (9WS)　p. 947-950　2016/10　Research paper (international conference proceedings)

  56. 二相ステンレス鋼溶接部のミクロ組織形態を考慮した水素拡散挙動の数値解析（一般社団法人 日本溶接協会 平成27年度 第1回「次世代を担う研究者助成事業」成果報告）

    三上 欣希

    溶接技術　Vol. 64　No. 9　p. 100-101　2016/09

  57. 二相ステンレス鋼およびその溶接部のミクロ組織形態を考慮した水素拡散挙動の数値シミュレーション

    三上 欣希, 芝本 優平, 望月 正人

    第224回溶接冶金研究委員会　Vol. WM-2397-16　2016/08　Research paper (other academic)

  58. Numerical analysis of residual stress relieving preprocessing and resultant distribution in CTOD test specimen of thick steel welds

    Y. Mikami, M. Mochizuki, T. Kawabata

    IIW C-X Intermediate Meeting　2016/04

  59. WELNET for Young Members

    OKANO Shigetaka, MIKAMI Yoshiki, KOHAMA Kazuyuki

    JOURNAL OF THE JAPAN WELDING SOCIETY　Vol. 85　No. 2　p. 238-241　2016

    Publisher: JAPAN WELDING SOCIETY

  60. Evaluation of Cold Cracking in High-Strength Steel Weld Metal Based on Local Critical Conditions Incorporating Stress and Diffusible Hydrogen Distributions

    MIKAMI Yoshiki, KAWABE Nao, ISHIKAWA Nobuyuki, MOCHIZUKI Masahito

    QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY　Vol. 34　No. 2　p. 67-80　2016　Research paper (other academic)

    Publisher: JAPAN WELDING SOCIETY

  61. Numerical investigation of the influence of heat source modeling on simulated residual stress distribution in weaving welds

    Yoshiki Mikami, Terumi Nakamura, Masahito Mochizuki

    WELDING IN THE WORLD　Vol. 60　No. 1　p. 41-49　2016/01　Research paper (scientific journal)

  62. EBSDを利用した結晶粒レベルの微視的応力分布測定手法の適用可能性に関する検討

    三上 欣希, 小田 和生, 釜谷 昌幸, 望月 正人

    2015/12　Research paper (other academic)

  63. Effect of reference point selection on microscopic stress measurement using EBSD

    Yoshiki Mikami, Kazuo Oda, Masayuki Kamaya, Masahito Mochizuki

    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING　Vol. 647　p. 256-264　2015/10　Research paper (scientific journal)

  64. Welding metallugy of Steels

    HAYAKAWA Naoya, HIRATA Hiroyuki, KAYANO Rinzo, MIKAMI Yoshiki, TERASAKI Hidenori, SATO Yoshihiro

    Vol. 84　No. 5　p. 365-367　2015/07

  65. Welding metallugy of steels

    HAYAKAWA Naoya, HIRATA Hiroyuki, KAYANO Rinzo, MIKAMI Yoshiki, TERASAKI Hidenori, SATO Yoshihiro

    Journal of the Japan Welding Society　Vol. 84　No. 5　p. 365-367　2015/07

  66. Hydrogen diffusion simulation in dual phase microstructure considering the difference in diffusion constants

    Gen Ogita, Yoshiki Mikami, Masahito Mochizuki

    Quarterly Journal of the Japan Welding Society　Vol. 33　No. 2　p. 6s-10s　2015/06　Research paper (scientific journal)

  67. Simulation of welding deformation and residual stress

    Masahito Mochizuki, Yoshiki Mikami, Shigetaka Okano, Masakazu Shibahara

    Yosetsu Gakkai Shi/Journal of the Japan Welding Society　Vol. 84　No. 1　p. 66-74　2015　Research paper (scientific journal)

  68. Ar-GMA welding using low transformation temperature of welding material

    Terumi NAKAMURA, Yoshiki MIKAMI, Masahito MOCHIZUKI

    p. 173-180　2014/12　Research paper (other academic)

  69. Study on cold cracking criteria in high-strength steel welds considering local stress and diffusive hydrogen

    Nao KAWABE, Yoshiki MIKAMI, Nobuyuki ISHIKAWA, Masahito MOCHIZUKI

    p. 227-234　2014/12　Research paper (other academic)

  70. Development of numerical analysis method of welding residual stress in plate-fin type heat exchanger

    Kaname TATANI, Yoshiki MIKAMI, Kenji OTANI, Norihiro HISADA, Shigeru AOKI, Masahito MOCHIZUKI

    p. 293-300　2014/12　Research paper (other academic)

  71. Numerical simulation of microscopic stress distribution in irradiated austenitic stainless steel

    Takamasa MIZOGUCHI, Yoshiki MIKAMI, Masahito MOCHIZUKI

    p. 423-429　2014/12　Research paper (other academic)

  72. Effect of lamellar microstructure on stress and strain distribution near crack tip under cyclic loading

    Mikoto KANI, Yoshiki MIKAMI, Hiroshi SHIMANUKI, Masahito MOCHIZUKI

    p. 431-438　2014/12　Research paper (other academic)

  73. Influence of material parameters in crystal plasticity on microscopic stress distribution in polycrystalline finite element model

    Yoshiki MIKAMI, Kazuo ODA, Masahito MOCHIZUKI

    p. 77-84　2014/12　Research paper (other academic)

  74. An elementary model to evaluate microscopic stress distribution due to dislocation channel in irradiated austenitic stainless steel

    Yoshiki MIKAMI, Takamasa MIZOGUCHI, Masahito MOCHIZUKI

    Proceedings of the 2nd International Conference on Maintenance Science and Technology (ICMST-Kobe 2014)　p. 143-144　2014/11　Research paper (international conference proceedings)

  75. EBSDを活用した材料組織レベルの応力評価手法に関する検討

    三上 欣希, 小田 和生, 望月 正人

    Vol. WM-2332-14　2014/10　Research paper (other academic)

  76. Application of digital image correlation technique to evaluation of grain-scale microscopic strain distribution

    Y. Mikami, K. Oda, M. Mochizuki

    Vol. IIW Doc. X-1774-14　2014/07

  77. Determination of microscopic strain components by digital image correlation in combination with crystal orientation information

    Y. Mikami, K. Oda, M. Mochizuki

    Proceedings of 16th International Conference on Experimental Mechanics　2014/07　Research paper (international conference proceedings)

  78. Numerical Simulation of Microscopic Stress Distribution in Steel Weld Metal Considering Anisotropic Crystal Orientation

    Yoshiki Mikami, Masahito Mochizuki

    TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN　Vol. 100　No. 10　p. 1281-1288　2014　Research paper (scientific journal)

  79. Numerical Simulation of Microscopic Stress Distribution in Steel Weld Metal Considering Anisotropic Crystal Orientation

    Yoshiki Mikami, Masahito Mochizuki

    TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN　Vol. 100　No. 10　p. 1281-1288　2014　Research paper (scientific journal)

  80. Numerical simulation of microscopic stress distribution in steel weld metal considering anisotropic crystal orientation

    Yoshiki Mikami, Masahito Mochizuki

    Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　Vol. 100　No. 10　p. 1281-1288　2014　Research paper (scientific journal)

  81. Analysis of Retained Austenite and Residual Stress Distribution in Ni-Cr Type High Strength Steel Weld by Neutron Diffraction

    Hitoshi Sueyoshi, Nobuyuki Ishikawa, Hiroshige Inoue, Kazuo Hiraoka, Tadashi Kasuya, Ke An, Harley Skorpenske

    Materials Science Forum　Vol. 783-786　p. 2115-2119　2013/12　Research paper (international conference proceedings)

    Publisher: Trans Tech Publications, Ltd.

  82. Numerical simulation of microscopic stress distribution in weld metal considering anisotropic crystal orientation

    Yoshiki Mikami, Takahiro Sakai, Masahito Mochizuki

    2013/11　Research paper (international conference proceedings)

  83. The effect of martensitic transformation on residual stress in resistance spot welded high-strength steel sheets

    Muneyoshi Iyota, Yoshiki Mikami, Tadafumi Hashimoto, Koichi Taniguchi, Rinsei Ikeda, Masahito Mochizuki

    JOURNAL OF ALLOYS AND COMPOUNDS　Vol. 577　p. S684-S689　2013/11　Research paper (scientific journal)

  84. 結晶方位情報を考慮した数値解析および実験による微視的応力・ひずみ分布特性の評価

    三上 欣希, 堺 貴洋, 小田 和生, 望月 正人

    2013/10　Research paper (other academic)

  85. Evaluation of microscopic stress distribution in weld metal considering anisotropic crystal orientation

    Yoshiki Mikami, Takahiro Sakai, Masahito Mochizuki

    2013/09　Research paper (other academic)

  86. Numerical simulation of microscopic stress in polycrystalline materials considering hardening due to irradiation

    Yoshiki Mikami, Masahito Mochizuki

    2013/09　Research paper (international conference proceedings)

  87. Welding metallurgy of steels

    HAYAKAWA Naoya, HIRATA Hiroyuki, KAYANO Rinzo, MIKAMI Yoshiki, YAMAGUCHI Tomiko, KOSEKI Toshihiko, SATO Yoshihiro

    Journal of the Japan Welding Society　Vol. 82　No. 5　p. 370-372　2013/07

  88. Report : The 2nd young researcher group seminar and visitation

    MIKAMI Yoshiki

    QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY　Vol. 82　No. 3　p. 212-213　2013/04/05

    Publisher: JAPAN WELDING SOCIETY

  89. Effect of crystal plasticity parameters on microscopic stress distribution in polycrystalline aggregate model

    Yoshiki Mikami, Kazuo Oda, Masahito Mochizuki

    Journal of Multiscale Modelling　Vol. 5　No. 1　p. 1350003-1-1350003-15　2013/03　Research paper (scientific journal)

  90. Effect of crystal plasticity parameters on microscopic stress distribution in polycrystalline aggregate model

    Yoshiki Mikami, Kazuo Oda, Masahito Mochizuki

    Journal of Multiscale Modelling　Vol. 5　No. 1　p. 1350003-1-1350003-15　2013/03　Research paper (scientific journal)

  91. Evaluation of residual stress distribution in Ni base alloy clad welds by numerical simulation and X-ray stress measurement

    Y. Mikami, K. Sogabe, T. Hashimoto, S. Nishikawa, M. Mochizuki

    SCIENCE AND TECHNOLOGY OF WELDING AND JOINING　Vol. 18　No. 2　p. 114-119　2013/02　Research paper (scientific journal)

  92. Estimation of three-dimensional microscopic strain components by digital image correlation and crystal orientation analysis

    Kazuo Oda, Yoshiki Mikami, Masahito Mochizuki

    Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society　Vol. 31　No. 4　p. 163s-167s　2013　Research paper (scientific journal)

  93. Experimental Evaluation of Microscopic Strain Distribution by Digital Image Correlation Incorporating Crystalline Orientation

    Y. Mikami, K. Oda, M. Mochizuki

    2012/07

  94. Diffusive hydrogen distribution simulation on microstructure scale in high strength weld metal containing retained austenite

    Yoshiki Mikami, Noriyoshi Kubota, Masahito Mochizuki

    19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012　2012　Research paper (international conference proceedings)

  95. X線回折法による抵抗スポット溶接部残留応力の高分解能評価

    伊與田 宗慶, 三上 欣希, 望月 正人, 谷口 公一, 池田 倫正, 橋本 匡史

    2012/01　Research paper (other academic)

  96. Effect of columnar grain shape modeling on the microscopic stress distribution at the clad weld metal surface of Ni base alloy

    Takahiro Sakai, Yoshiki Mikami, Masahito Mochizuki

    INTERNATIONAL SYMPOSIUM ON MATERIALS SCIENCE AND INNOVATION FOR SUSTAINABLE SOCIETY: ECO-MATERIALS AND ECO-INNOVATION FOR GLOBAL SUSTAINABILITY (ECO-MATES 2011)　Vol. 379　2012　Research paper (international conference proceedings)

  97. Numerical simulation of the effect of low-temperature transformation expansion on residual stress in cold cracking test specimens of different restraint factors

    Noriyoshi Kubota, Yoshiki Mikami, Masahito Mochizuki, Kazuo Hiraoka

    INTERNATIONAL SYMPOSIUM ON MATERIALS SCIENCE AND INNOVATION FOR SUSTAINABLE SOCIETY: ECO-MATERIALS AND ECO-INNOVATION FOR GLOBAL SUSTAINABILITY (ECO-MATES 2011)　Vol. 379　2012　Research paper (international conference proceedings)

  98. Effect of electrode force condition on nugget diameter and residual stress in resistance spot welded high-strength steel sheets

    M. Iyota, Y. Mikami, T. Hashimoto, K. Taniguchi, R. Ikeda, M. Mochizuki

    INTERNATIONAL SYMPOSIUM ON MATERIALS SCIENCE AND INNOVATION FOR SUSTAINABLE SOCIETY: ECO-MATERIALS AND ECO-INNOVATION FOR GLOBAL SUSTAINABILITY (ECO-MATES 2011)　Vol. 379　2012　Research paper (international conference proceedings)

  99. Numerical Simulation of Nugget Size and Residual Stress of Resistance Spot Welded HT980 Steel Sheet

    IYOTA Muneyoshi, MIKAMI Yoshiki, HASHIMOTO Tadafumi, TANIGUCHI Kouichi, IKEDA Rinsei, MOCHIZUKI Masahito

    QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY　Vol. 29　No. 2　p. 86-95　2011/12/31　Research paper (scientific journal)

    Publisher: JAPAN WELDING SOCIETY

  100. Effect of columnar grain shape modeling on microscopic stress distribution of clad weld metal surface of Ni base alloy

    Takahiro Sakai, Yoshiki Mikami, Masahito Mochizuki

    Proceedings of ECO-MATES 2011　p. 285-286　2011/11　Research paper (international conference proceedings)

  101. Effect of low-temperature transformation expansion on residual stress in cold cracking test specimens of different restraint factor

    Noriyoshi Kubota, Yoshiki Mikami, Masahito Mochizuki, Kazuo Hiraoka

    Proceedings of ECO-MATES 2011　p. 281-282　2011/11　Research paper (international conference proceedings)

  102. Effect of electrode force condition on nugget diameter and residual stress in resistance spot welded high-strength steel sheets

    Muneyoshi Iyota, Yoshiki Mikami, Tadafumi Hashimoto, Koichi Taniguchi, Rinsei Ikeda, Masahito Mochizuki

    Proceedings of ECO-MATES 2011　p. 275-276　2011/11　Research paper (international conference proceedings)

  103. Evaluation of macroscopic and microscopic residual stress distribution in Ni base alloy clad welds

    Y. Mikami, K. Sogabe, T. Hashimoto, S. Nishikawa, M. Mochizuki

    Proceedings of ECO-MATES 2011　p. 225-226　2011/11　Research paper (international conference proceedings)

  104. ニッケル基合金溶接金属/低合金鋼境界部における微視的残留応力評価手法の検討

    西川 聡, 曽我部 恵典, 橋本 匡史, 三上 欣希, 山口 篤憲, 望月 正人

    2011/10　Research paper (other academic)

  105. X線回折法による抵抗スポット溶接部残留応力の高精度評価と数値解析による検証

    伊與田 宗慶, 橋本 匡史, 三上 欣希, 谷口 公一, 池田 倫正, 望月 正人

    2011/10　Research paper (other academic)

  106. 模擬PWR 1次環境におけるAlloy 600のIGSCC発生と結晶組織およびミクロ応力分布との対応

    藤本 慎司, 森田 裕也, 土谷 博昭, 望月 正人, 三上 欣希

    2011/09　Research paper (other academic)

  107. The effect of martensitic transformation on residual stress in resistance spot welded high-strength steel sheets

    Muneyoshi Iyota, Yoshiki Mikami, Tadafumi Hashimoto, Koichi Taniguchi, Rinsei Ikeda, Masahito Mochizuki

    2011/09

  108. Effect of electrode force and transformation expansion on welding distortion and residual stress of resistance spot welded high-strength steel sheet

    Muneyoshi IYOTA, Yoshiki MIKAMI, Tadafumi HASHIMOTO, Koichi TANIGUCHI, Rinsei IKEDA, Masahito MOCHIZUKI

    Proceedings of 3rd International Conference on Distortion Engineering　p. 287-294　2011/09　Research paper (international conference proceedings)

  109. フェライト・マルテンサイト層状組織鋼の相変態誘起型微視的残留応力とその疲労き裂進展特性に及ぼす影響

    三上 欣希, 望月 正人, 島貫 広志

    2011/08　Research paper (other academic)

  110. Welding Metallurgy of Steels

    HAYAKAWA Naoya, NAKAMURA Syuichi, WANG Kun, MIKAMI Yoshiki, MOCHIZUKI Masahito, YAMAGUCHI Tomiko, KOSEKI Toshihiko, SATO Yoshihiro

    Journal of the Japan Welding Society　Vol. 80　No. 5　p. 422-425　2011/07/05

    Publisher:

  111. Prediction of residual stress distributions due to surface machining and welding and crack growth simulation under residual stress distribution

    Ryohei Ihara, Jinya Katsuyama, Kunio Onizawa, Tadafumi Hashimoto, Yoshiki Mikami, Masahito Mochizuki

    NUCLEAR ENGINEERING AND DESIGN　Vol. 241　No. 5　p. 1335-1344　2011/05　Research paper (scientific journal)

  112. Anisotropic Mechanical Behavior of Ni-base Alloy Weld Metal Considering Crystal Orientation Distribution

    Yoshiki Mikami, Keisuke Sogabe, Satoru Nishikawa, Takahiro Sakai, Masahito Mochizuki

    11TH INTERNATIONAL CONFERENCE ON THE MECHANICAL BEHAVIOR OF MATERIALS (ICM11)　Vol. 10　p. 1621-1626　2011　Research paper (international conference proceedings)

  113. EBSP-based crystal plasticity FEM simulation of microscopic stress distribution in weld metal

    Yoshiki Mikami, Keisuke Sogabe, Masahito Mochizuki

    Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society　Vol. 29　No. 3　p. 100s-103s　2011　Research paper (scientific journal)

  114. Crystallographical Characterization of Initiation of Intergranular Stress Corrosion Cracking of Alloy 600 in PWR Environment

    Shinji Fujimoto, Masahito Mochizuki, Yuya Morita, Yoshiki Mikami, Hiroaki Tsuchiya, Kazutoshi Nishimoto

    15TH INTERNATIONAL CONFERENCE ON ENVIRONMENTAL DEGRADATION OF MATERIALS IN NUCLEAR POWER SYSTEMS-WATER REACTORS　p. 1685-1696　2011　Research paper (international conference proceedings)

  115. Anisotropic Mechanical Behavior of Ni-base Alloy Weld Metal Considering Crystal Orientation Distribution

    Yoshiki Mikami, Keisuke Sogabe, Satoru Nishikawa, Takahiro Sakai, Masahito Mochizuki

    11TH INTERNATIONAL CONFERENCE ON THE MECHANICAL BEHAVIOR OF MATERIALS (ICM11)　Vol. 10　p. 1621-1626　2011　Research paper (international conference proceedings)

  116. The effect of transformation on residual stress in resistance spot welded high strength steel

    Muneyoshi IYOTA, Yoshiki MIKAMI, Koichi TANIGUCHI, Rinsei IKEDA, Tadafumi HASHIMOTO, Masahito MOCHIZUKI

    2010/10　Research paper (other academic)

  117. Structural refinement generated by machining in pipe made of austenitic stainless steel

    Ryohei IHARA, Tadafumi HASHIMOTO, Yoshiki MIKAMI, Jinya KATSUYAMA, Masahito MOCHIZUKI

    2010/10　Research paper (other academic)

  118. Hydrogen concentration distribution in varied restraint length weld cracking test

    Noriyoshi KUBOTA, Yoshiki MIKAMI, Kazuo HIRAOKA, Masahito MOCHIZUKI

    2010/10　Research paper (other academic)

  119. SCC prediction in weld components by multi-scale analysis incorporating crystal plasticity

    Y. MIKAMI, R. URAGUCHI, K. SOGABE, M. MOCHIZUKI

    Mathematical Modelling of Weld Phenomena 9　p. 699-713　2010/09　Research paper (international conference proceedings)

    Publisher: Verlag der Technischen Universität Graz

  120. 溶接構造シンポジウム2009 会議録 : クリーンエネルギーを取り巻く新潮流と溶接構造化技術

    猪瀬 幸太郎, 萱森 陽一, 川口 忍, 川畑 友弥, 日下 正広, 久保 高宏, 誉田 登, 才田 一幸, 佐藤 統宣, 柴原 正和, 島貫 広志, 芹澤 久, 高澤 孝一, 田川 哲哉, 鷹羽 新二, 平松 秀基, 三上 欣希, 望月 正人, 山下 洋一, 山本 元道

    溶接学会誌 = Journal of the Japan Welding Society　Vol. 79　No. 5　p. 534-537　2010/07/05

    Publisher: 溶接学会

  121. HENRY GRANJON PRIZE COMPETITION 2007 Winner - Category C: "Design and Structural Integrity" CALCULATION OF THE EFFECT OF TRANSFORMATION EXPANSION ON WELD DISTORTION USING NUMERICAL ANALYSIS

    Y. Mikami

    WELDING IN THE WORLD　Vol. 54　No. 5-6　p. R97-R107　2010/05　Research paper (scientific journal)

  122. 応力腐食割れ発生予測へ向けた結晶組織レベルの残留応力分布評価手法の開発

    三上 欣希, 望月 正人

    2010/02　Research paper (other academic)

  123. 980MPa級高張力鋼溶接部の水素割れに関する力学的検討

    三上 欣希, 望月 正人

    2010/02　Research paper (other academic)

  124. A STUDY OF REDISTRIBUTION OF RESIDUAL STRESS AND HARDNESS DUE TO WELDING AND SURFACE-MACHINING AT GIRTH WELDED JOINT

    Masahito Mochizuki, Jinya Katsuyama, Ryohei Ihara, Hiroaki Mori, Yoshiki Mikami, Kunio Onizawa

    PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE, VOL 6, PTS A AND B　p. 1117-1124　2010　Research paper (international conference proceedings)

  125. Multi-scale analysis of microscopic stress concentration at grain boundary in weld metal of ni-based alloy joint for SCC evaluation

    Y. Mikami, K. Sogabe, S. Nishikawa, M. Mochizuki

    18th European Conference on Fracture: Fracture of Materials and Structures from Micro to Macro Scale　p. 1-8　2010　Research paper (international conference proceedings)

  126. PREDICTION OF SCC INITIATION IN WELD COMPONENTS BY MULTI-SCALE ANALYSIS INCORPORATING CRYSTAL PLASTICITY

    Masahito Mochizuki, Yoshiki Mikami

    PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE 2010, VOL 6, PTS A AND B　p. 189-195　2010　Research paper (international conference proceedings)

  127. Prediction of SCC initiation in weld components by multi-scale analysis incorporating crystal plasticity

    Masahito Mochizuki, Yoshiki Mikami

    American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP　Vol. 6　p. 189-195　2010　Research paper (international conference proceedings)

  128. Heterogeneous microstructure effect on residual stress and fatigue crack resistance in dual-phase materials

    Masahito Mochizuki, Yoshiki Mikami

    American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP　Vol. 6　No. PART A　p. 129-133　2010　Research paper (international conference proceedings)

  129. A study of redistribution of residual stress and hardness due to welding and surface-machining at girth welded joint

    Masahito Mochizuki, Jinya Katsuyama, Ryohei Ihara, Hiroaki Mori, Yoshiki Mikami, Kunio Onizawa

    American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP　Vol. 6　No. PART B　p. 1117-1124　2010　Research paper (international conference proceedings)

  130. 拘束度の異なる低温割れ試験片における溶接金属部残留応力の数値シミュレーション

    三上 欣希, 久保田 典禎, 伊與田 宗慶, 井上 裕滋, 糟谷 正, 望月 正人, 平岡 和雄

    2009/11　Research paper (other academic)

  131. Numerical analysis of microscopic stress distribution in Ni-base alloy weld metal of CBB test

    Keisuke SOGABE, Yoshiki MIKAMI, Satoru NISHIKAWA, Masahito MOCHIZUKI

    p. 665-672　2009/11　Research paper (other academic)

  132. Effect of specimen geometry on residual stress distribution in cold cracking test welds

    Yoshiki MIKAMI, Noriyoshi KUBOTA, Muneyoshi IYOTA, Hiroshige INOUE, Tadashi KASUYA, Masahito MOCHIZUKI, Kazuo HIRAOKA

    p. 651-658　2009/11　Research paper (other academic)

  133. Measurement of the change of microscopic residual stress and strain conditions in ferrite-martensite lamellar steels with pre-strain

    Akihiro INAO, Yoshiki MIKAMI, Masahito MOCHIZUKI, Hiroshi SHIMANUKI

    p. 425-428　2009/11　Research paper (other academic)

  134. Numerical simulation of residual stress distribution generated by machining and the effect on crack growth

    Ryohei IHARA, Jinya KATSUYAMA, Kunio ONIZAWA, Tadafumi HASHIMOTO, Yoshiki MIKAMI, Masahito MOCHIZUKI

    p. 393-396　2009/11　Research paper (other academic)

  135. Numerical simulation of heat transfer and residual stress of high-strength steel spot welds

    Muneyoshi IYOTA, Yoshiki MIKAMI, Koichi TANIGUCHI, Rinsei IKEDA, Masahito MOCHIZUKI

    p. 113-120　2009/11　Research paper (other academic)

  136. Cold cracking prevention in pressure vessel steels by low-temperature transformation expansion of weld metals

    Muneyoshi Iyota, Yoshiki Mikami, Hiroshige Inoue, Tadashi Kasuya, Masahito Mochizuki

    Proceedings of the 12th International Conference on Pressure Vessel Technology (ICPVT-12)　p. 65-71　2009/09　Research paper (international conference proceedings)

  137. Prediction of hardness and residual stress distribution generated by surface machining and welding in low-carbon austenitic stainless steel

    Jinya Katsuyama, Kunio Onizawa, Tadafumi Hashimoto, Yoshiki Mikami, Masahito Mochizuki

    Proceedings of the 12th International Conference on Pressure Vessel Technology (ICPVT-12)　p. 224-230　2009/09　Research paper (international conference proceedings)

  138. An application of multi-scale analysis to the evaluation of microscopic residual stress in the welding joint

    Keisuke Sogabe, Yoshiki Mikami, Tetsusei Kurashiki, Masahito Mochizuki

    Proceedings of the 12th International Conference on Pressure Vessel Technology (ICPVT-12)　p. 505-511　2009/09　Research paper (international conference proceedings)

  139. 結晶方位分布を考慮した数値解析による応力腐食割れ試験片における微視的応力分布の評価

    三上 欣希, 曽我部 恵典, 浦口 良介, 望月 正人, 藤本 慎司

    2009/09　Research paper (other academic)

  140. Analytical study on effects of strain distribution in welding start/end on welding distortion

    Masahito Mochizuki, Yoshiki Mikami, Hiroki Yamasaki, Masao Toyoda

    Welding International　Vol. 23　No. 9　p. 654-661　2009/09　Research paper (scientific journal)

  141. Strenght of welded joints

    MOCHIZUKI Masahito, MIKAMI Yoshiki

    Jounral of the Japan Welding Society　Vol. 78　No. 5　p. 450-452　2009/07

  142. Heterogeneous microstructure effect on residual stress and fatigue crack resistance in dual-phase materials

    Masahito MOCHIZUKI, Yoshiki MIKAMI

    Proceedings of the ASME 2009 Pressure Vessels and Piping Conference (PVP2009)　p. 129-133　2009/06　Research paper (international conference proceedings)

  143. 材料・溶接・生産プロセスを駆使したミクロ構造設計から巨大構造体施工に至る構造デザイン手法の構築に向けての検討

    望月 正人, 三上 欣希, 岡野 成威, 伊藤 真介

    グローバルCOEプログラム「構造・機能先進材料デザイン教育研究拠点」 平成20年度 成果報告書　p. 47-48　2009/03　Research paper (bulletin of university, research institution)

  144. 材料組織レベルにおける変態誘起型残留応力数値解析手法の構築と鋼材性能向上への応用

    三上 欣希

    グローバルCOEプログラム「構造・機能先進材料デザイン研究拠点」 平成20年度 成果報告書　p. 127-128　2009/03　Research paper (bulletin of university, research institution)

  145. Angular distortion of fillet welded T joint using low transformation temperature welding wire

    Y. Mikami, Y. Morikage, M. Mochizuki, M. Toyoda

    SCIENCE AND TECHNOLOGY OF WELDING AND JOINING　Vol. 14　No. 2　p. 97-105　2009/02　Research paper (scientific journal)

  146. Microscopic Residual Stress Simulation in Welds by Multi-Scale Analysis Method

    SOGABE Keisuke, MIKAMI Yoshiki, KURASHIKI Tetsusei, MOCHIZUKI Masahito

    Preprints of the National Meeting of JWS　Vol. 2009　No. 0　p. 116-116　2009

    Publisher: JAPAN WELDING SOCIETY

  147. Transformation-induced microscopic residual stress in ferrite-martensite lamellar steels and its influence on fatigue crack propagation paths

    Yoshiki Mikami, Akihiro Inao, Masahito Mochizuki, Kiyotaka Nakashima, Hiroshi Shimanuki

    Proceedings of the International Offshore and Polar Engineering Conference　p. 285-289　2009　Research paper (international conference proceedings)

  148. 若者 溶接力学を基本として

    三上 欣希

    生産と技術　Vol. 61　No. 1　p. 51-53　2009/01

  149. Strength of Welded Joints

    MOCHIZUKI Masahito, MIKAMI Yoshiki

    JOURNAL OF THE JAPAN WELDING SOCIETY　Vol. 78　No. 5　p. 450-452　2009

    Publisher: JAPAN WELDING SOCIETY

  150. Computational simulation of weld microstructure and distortion by considering process mechanics

    M. Mochizuki, Y. Mikami, S. Okano, S. Itoh

    Journal of Physics: Conference Series　Vol. 165　No. 1　2009　Research paper (international conference proceedings)

  151. Effect of low temperature transformation expansion on restraint stress of high strength steel welds

    Masahito Mochizuki, Yoshiki Mikami, Muneyoshi Iyota, Hiroshige Inoue, Tadashi Kasuya

    Proceedings of the International Offshore and Polar Engineering Conference　p. 464-468　2009　Research paper (international conference proceedings)

  152. Numerical simulation of transformation-induced microscopic residual stress in ferrite-martensite lamellar steel

    Y. Mikami, A. Inao, M. Mochizuki, M. Toyoda

    Journal of Physics: Conference Series　Vol. 165　No. 1　2009　Research paper (international conference proceedings)

  153. Effect of transformation temperature and restraint intensity on the reduction of restraint stress by transformation expansion

    Yoshiki Mikami, Masaya Nakamura, Masahito Mochizuki, Masao Toyada

    Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society　Vol. 27　No. 2　p. 235-239　2009　Research paper (scientific journal)

  154. Computational simulation of weld microstructure and distortion by considering process mechanics

    M. Mochizuki, Y. Mikami, S. Okano, S. Itoh

    Journal of Physics: Conference Series　Vol. 165　2009　Research paper (international conference proceedings)

  155. Numerical simulation of transformation-induced microscopic residual stress in ferrite-martensite lamellar steel

    Y. Mikami, A. Inao, M. Mochizuki, M. Toyoda

    Journal of Physics: Conference Series　Vol. 165　2009　Research paper (international conference proceedings)

  156. Parametric study on the effect of geometric imperfections on the bending capacity of high-strength linepipes

    Takashi Sato, Yoshiki Mikami, Masahito Mochizuki, Nobuhisa Suzuki, Masao Toyoda

    Proceedings of the Biennial International Pipeline Conference, IPC　Vol. 3　p. 745-753　2009　Research paper (international conference proceedings)

  157. Computational simulation of weld microstructure and distortion by considering Process Mechanics

    Masahito Mochizuki, Yoshiki Mikami, Shigetaka Okano, Shinsuke Itoh

    Proceedings of International Conference on Advanced Structural and Functional Materials Design　2008/11　Research paper (international conference proceedings)

  158. Effect of geometric imperfections and mechanical properties on bending capacity of high-strength line pipes

    Takashi Sato, Yoshiki Mikami, Masahito Mochizuki, Nobuhisa Suzuki, Masao Toyoda

    Proceedings of 8th International Welding Symposium (8WS)　2008/11　Research paper (international conference proceedings)

  159. Observation of fatigue crack propagation paths in ferrite-martensite lamellar steels

    Akihiro Inao, Yoshiki Mikami, Kiyotaka Nakashima, Hiroshi Shimanuki, Masahito Mochizuki, Masao Toyoda

    Proceedings of 8th International Welding Symposium (8WS)　2008/11　Research paper (international conference proceedings)

  160. A 3-D analytical study of the microscopic stress distribution considering the heterogeneity of microscopic structure of steel

    Ryosuke Uraguchi, Yoshiki Mikami, Ryota Higuchi, Masahito Mochizuki, Masao Toyoda

    Proceedings of 8th International Welding Symposium (8WS)　2008/11　Research paper (international conference proceedings)

  161. Basic development of structure distortion evaluation system using inherent strain

    Masahiro Hasegawa, Ryo Hamanaka, Shigetaka Okano, Yoshiki Mikami, Masahito Mochizuki, Masao Toyoda

    Proceedings of 8th International Welding Symposium (8WS)　2008/11　Research paper (international conference proceedings)

  162. A parametric study on the effect of the transformation expansion of high-strength weld metals on the restraint stress

    Yoshiki Mikami, Masahito Mochizuki, Masao Toyoda

    Proceedings of 8th International Welding Symposium (8WS)　2008/11　Research paper (international conference proceedings)

  163. 鋼構造キャリア紹介 溶接分野

    三上 欣希

    JSSC会誌　2008/07

  164. EFFECT OF TRANSFORMATION TEMPERATURE OF WELD METAL ON WELDING DISTORTION

    Yasushi Morikage, Takahiro Kubo, Koichi Yasuda, Yoshiki Mikami, Masahito Mochizuki, Hirohisa Watanabe

    PROCEEDINGS OF THE 27TH INTERNATIONAL CONFERENCE ON OFFSHORE MECHANICS AND ARCTIC ENGINEERING - 2008, VOL 5　p. 429-438　2008　Research paper (international conference proceedings)

  165. Analytical study on effects of strain distribution in welding start/end on welding distortion

    Masahito Mochizuki, Yoshiki Mikami, Hiroki Yamasaki, Masao Toyoda

    Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society　Vol. 26　No. 2　p. 145-151　2008　Research paper (scientific journal)

  166. Evaluation of fracture toughness of multipass weld metal considering distribution of microstructure

    Yoshiki MIKAMI, Yasuhiro NAKATSU, Yuji HASHIBA, Masahito MOCHIZUKI, Masao TOYODA

    Journal of Constructional Steel　Vol. 15　p. 659-667　2007/11　Research paper (scientific journal)

  167. Study on metallurgical and mechanical heterogeneity in weld materials considering multiple heat cycles and phase transformation

    M. MOCHIZUKI, Y. MIKAMI, M. TOYODA

    Mathematical Modelling of Weld Phenomena 8　p. 287-294　2007/09　Research paper (scientific journal)

    Publisher: Verlag der Technischen Universität Graz

  168. In-process control of weld distortion by using phase transformation effects

    Y. MIKAMI, M. MOCHIZUKI, M. TOYODA

    Mathematical Modelling of Weld Phenomena 8　p. 981-1001　2007/09　Research paper (scientific journal)

    Publisher: Verlag der Technischen Universität Graz

  169. Measurement and numerical simulation of angular distortion of fillet welded T-joints - Welding angular distortion control by transformation expansion of weld metals (Report 1)

    Y. Mikami, M. Mochizuki, M. Toyoda, Y. Morikage

    Welding International　Vol. 21　No. 8　p. 547-560　2007/08　Research paper (scientific journal)

  170. Evaluation of heterogeneity of microscopic deformation and stress distribution in steel and its weld by FEM-MD coupling simulation

    M. Mochizuki, R. Higuchi, Y. Mikami, M. Toyoda

    2007/07

  171. Numerical analysis of weld distortion considering phase transformation effects

    Y. Mikami

    2007/07

  172. Elastic predicting method of weld distortion of large structures using numerical simulation results by thermal-elastic-plastic analysis of small components

    M. Mochizuki, Y. Mikami, H. Yamasaki, M. Toyoda

    Welding in the World　Vol. 51　No. 11-12　p. 60-64　2007　Research paper (scientific journal)

  173. Effect of characteristics of transformation expansion of weld metals on angular distortion behavior of welded joints - Welding angular distortion control by transformation expansion of weld metals (Report 2)

    Yoshiki Mikami, Masahito Mochizuki, Masao Toyoda

    Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society　Vol. 25　No. 1　p. 59-67　2007　Research paper (scientific journal)

  174. Effect of heat input condition on reduction of angular distortion transformation expansion of weld metals-welding distortion control by transformation expansion of weld metals (Report 3)

    Yoshiki Mikami, Masahito Mochizuki, Masao Toyoda

    Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society　Vol. 25　No. 1　p. 68-73　2007　Research paper (scientific journal)

  175. Reduction of angular distortion by transformation expansion of weld metals in joints with external restraints - Welding angular distortion control by transformation expansion of weld metals (Report 4)

    Yoshiki Mikami, Masahito Mochizuki, Masao Toyoda

    Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society　Vol. 25　No. 1　p. 74-79　2007　Research paper (scientific journal)

  176. Elastic predicting method of weld distortion of large structures using numerical simulation results by thermal-elastic-plastic analysis of small components

    M. Mochizuki, Y. Mikami, H. Yamasaki, M. Toyoda

    Welding in the World　Vol. 51　No. 11-12　p. 60-64　2007　Research paper (scientific journal)

  177. Measurement and Numerical Simulation of Angular Distortion of Fillet Welded T-joints : Welding Angular Distortion Control by Transformation Expansion of Weld Metals (Report 1)

    MIKAMI Yoshiki, MORIKAGE Yasushi, MOCHIZUKI Masahito, TOYODA Masao

    Quarterly journal of the Japan Welding Society.　Vol. 24　No. 4　p. 312-323　2006/11/05　Research paper (scientific journal)

    Publisher: Japan Welding Society

  178. Study on metallurgical and mechanical heterogeneity in weld materials considering multiple heat cycles and phase transformation

    M. Mochizuki, Y. Mikami, M. Toyoda

    2006/09

  179. In-process control of weld distortion by using phase transformation effects

    Y. Mikami, M. Mochizuki, M. Toyoda

    2006/09

  180. Numerical simulations of weld hardness distributions in ultra-narrow gap GMA welding. Evaluation of weld hardness distributions by numerical simulations of welding thermal cycles and microstructural phase fractions (1st report)

    Y. Mikami, M. Mochizuki, M. Toyoda, T. Nakamura, K. Hiraoka

    Welding International　Vol. 20　No. 9　p. 677-683　2006/09/01　Research paper (scientific journal)

  181. Evaluation of microstructural phase fractions and hardness distributions of weld metal subjected to multiple thermal cycles. Evaluation of weld hardness distributions by numerical simulations of welding thermal cycles and microstructural phase fractions (2nd report)

    Y. Mikami, M. Mochizuki, M. Toyoda, Y. Hashiba, T. Hasegawa, S. Okita

    Welding International　Vol. 20　No. 9　p. 684-691　2006/09/01　Research paper (scientific journal)

  182. Elastic predicting method of weld distortion of large structures using numerical simulation results by thermal-elastic-plastic analysis of small components

    M. Mochizuki, Y. Mikami, H. Yamasaki, M. Toyoda

    IIW Doc. X-1607-06　2006/08

  183. 相変態を考慮した溶接変形解析手法の確立とその溶接変形制御への展開

    三上 欣希, 望月 正人, 豊田 政男

    21世紀COEプログラム「構造・機能材料先進デザイン研究拠点の形成」平成17年度成果報告書・第4回シンポジウム資料集　2006/03　Research paper (bulletin of university, research institution)

  184. Consideration on Transformation Start Temperature Effective for Reduction of Angular Distortion of Welded Joints

    MIKAMI Yoshiki, MOCHIZUKI Masahito, TOYODA Masao

    Preprints of the National Meeting of JWS　Vol. 2006　No. 0　p. 73-73　2006

    Publisher: JAPAN WELDING SOCIETY

  185. Metallurgical and mechanical heterogeneity in weld materials considering multiple heat cycles and phase transformation

    Masao Toyoda, Masahito Mochizuki, Yoshiki Mikami

    ADVANCED STRUCTURAL AND FUNCTIONAL MATERIALS DESIGN, PROCEEDINGS　Vol. 512　p. 19-24　2006　Research paper (scientific journal)

  186. Application of numerical simulation considering the effect of phase transformation to the estimation of hardness distribution in welds

    Yoshiki Mikami, Masahito Mochizuki, Terumi Nakamura, Kazu Hiraoka, Masao Toyoda

    ADVANCED STRUCTURAL AND FUNCTIONAL MATERIALS DESIGN, PROCEEDINGS　Vol. 512　p. 379-382　2006　Research paper (scientific journal)

  187. Numerical Simulation of Hardness Distribution in Welds of Ultra-Narrow Gap GMA Welding : Evaluation of Hardness Distribution in Welds by Numerical Simulation of Weld Thermal Cycles and Fraction of Microstructure (Report 1)

    MIKAMI Yoshiki, MOCHIZUKI Masahito, NAKAMURA Terumi, HIRAOKA Kazuo, TOYODA Masao

    Quarterly journal of the Japan Welding Society.　Vol. 23　No. 4　p. 558-563　2005/11/05　Research paper (scientific journal)

    Publisher: Japan Welding Society

  188. Evaluation of Fraction of Microstructure and Hardness Distribution in Weld Metal Subjected to Multiple Thermal Cycles : Evaluation of Hardness Distribution in Welds by Numerical Simulation of Weld Thermal Cycles and Fraction of Microstructure (Report 2)

    MIKAMI Yoshiki, MOCHIZUKI Masahito, HASHIBA Yuji, HASEGAWA Toshiei, OHKITA Shigeru, TOYODA Masao

    Quarterly journal of the Japan Welding Society.　Vol. 23　No. 4　p. 564-570　2005/11/05　Research paper (scientific journal)

    Publisher: Japan Welding Society

  189. Welding-distortion phenomena of T-joint using low-temperature transformation welding wire

    MORIKAGE Yasushi, KUBO Takahiro, YASUDA Koichi, AMANO Keniti, MIKAMI Yoshiki, MOCHIZUKI Masahito, TOYODA Masao

    Proceedings of the 1st International Conference on Distortion Engineering　p. 447-452　2005/09　Research paper (international conference proceedings)

  190. Numerical simulation of welding distortions of T-joints with low-temperature transformation welding wire

    Yoshiki Mikami, Yasushi Morikage, Masahito Mochizuki, Masao Toyoda

    Proceedings of the 1st International Conference on Distortion Engineering　p. 453-460　2005/09　Research paper (international conference proceedings)

  191. Estimation of tensile strength of welded joint of high strength steels with softend region in haz

    IWAHASHI Hiroki, MIKAMI Yoshiki, MOCHIZUKI Masahito, NAKAMURA Terumi, HIRAOKA Kazuo, TOYODA Masao

    Proceedings of 9th Ultra-Steel Workshop -Achievement, Linkage and Bridging-　p. 172-173　2005/07　Research paper (international conference proceedings)

  192. Welding distortion behavior of steel welds with low-temperature transformation welding wire

    Y. Nakashima, Y. Kumon, K. Inose, Y. Nakanishi, Y. Morikage, T. Kubo, K. Amano, Y. Mikami, M. Mochizuki

    2005/07

  193. Evaluation of relationship between transformation expansion of weld metal and weld distortion through numerical simulation considering phase transformation effect

    Y. Mikami, Y. Morikage, M. Mochizuki, M. Toyoda

    2005/07

  194. Continuous measurement and three-dimensional FEM simulation of transient distortion in welded joint with low-temperature transformation welding wire

    Y. Mikami, Y. Morikage, M. Mochizuki, M. Toyoda

    2005/07

  195. 相変態を考慮した溶接プロセス解析手法の開発と溶接変形制御への応用

    三上 欣希, 望月 正人, 豊田 政男

    21世紀COEプログラム「構造・機能材料先進デザイン研究拠点の形成」平成16年度成果報告書・第3回シンポジウム資料集　2005/03　Research paper (bulletin of university, research institution)

  196. Effect of material properties on welding distortion history

    Masahito Mochizuki, Yoshiki Mikami, Yasushi Morikage, Masao Toyoda

    Proceedings of the ASME Pressure Vessels and Piping Conference 2005, Vol 6　Vol. 6　p. 835-841　2005　Research paper (international conference proceedings)

  197. Effect of material properties on welding distortion history

    Masahito Mochizuki, Yoshiki Mikami, Yasushi Morikage, Masao Toyoda

    American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP　Vol. 6　p. 835-841　2005　Research paper (international conference proceedings)

  198. Analytical study on effects of strain distribution in welding start/end on welding distortion

    Masahito MOCHIZUKI, Hiroki YAMASAKI, Yoshiki MIKAMI, Masao TOYODA

    p. 411-414　2004/11　Research paper (other academic)

  199. Evaluation of hardness distribution of multipass weld metal with numerical simulation of weld thermal cycles and phase fraction of microstructure

    Yoshiki MIKAMI, Masahito MOCHIZUKI, Masao TOYODA, Yuji HASHIBA, Toshiei HASEGAWA, Shigeru OHKITA

    p. 211-218　2004/11　Research paper (other academic)

  200. Numerical simulation of hardness distribution in welds with ultra-narrow gap welding

    Masahito MOCHIZUKI, Yoshiki MIKAMI, Masao TOYODA, Terumi NAKAMURA, Kazuo HIRAOKA

    p. 203-210　2004/11　Research paper (other academic)

  201. Metallurgical and mechanical heterogeneity in weld materials considering multiple heat cycles and phase transformation

    Masao Toyoda, Masahito Mochizuki, Yoshiki Mikami

    p. 19-19　2004/11　Research paper (other academic)

  202. Application of numerical simulation considering the effect of phase transformation to the estimation of hardness distribution in welds

    MIKAMI Yoshiki, MOCHIZUKI Masahito, NAKAMURA Terumi, HIRAOKA Kazuo, TOYODA Masao

    p. 75-75　2004/11　Research paper (other academic)

  203. Evaluation of hardness in welded joints by numerical simulation of weld thermal cycle and microphase

    MIKAMI Yoshiki, MOCHIZUKI Masahito, TOYODA Masao, NAKAMURA Terumi, HIRAOKA Kazuo

    p. 246-247　2004/07

  204. Numerical simulation of weld mechanics with microstructural effect

    Masahito Mochizuki, Yoshiki Mikami, Jinya Katsuyama, Ryota Higuchi, Masao Toyoda

    p. 60-69　2004/07

  205. Evaluation of hardness and microstructure in welds considering weld thermal cycle and phase transformation

    Yoshiki Mikami, Masahito Mochizuki, Masao Toyoda

    2004/07

  206. Analytical study on the effects of welding deposition sequence on microstructure and hardness in beam-to-column welded connection of steel framed structures

    M. Mochizuki, Y. Mikami, M. Toyoda

    Welding Research Abroad　Vol. 50　No. 6-7　p. 1-9　2004/06　Research paper (scientific journal)

  207. Analytical study on the effects of welding deposition sequence on microstructure and hardness in beam-to-column welded connection of steel framed structures

    M. Mochizuki, Y. Mikami, M. Toyoda

    Welding International　Vol. 18　No. 2　p. 103-111　2004/02　Research paper (scientific journal)

  208. Analytical Study on Effects of Welding Deposition Sequence on Microstructure and Hardness in Beam-to-Column Welded Connection of Steel Framed Structures : Studies on Relation between Joint Performance and Welding Heat Cycles in Welded Joints (Report2)

    MOCHIZUKI Masahito, MIKAMI Yoshiki, TOYODA Masao

    QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY　Vol. 21　No. 1　p. 54-61　2003/02/05　Research paper (scientific journal)

    Publisher: Japan Welding Society

  209. Evaluation of mechanical properties in welded joints by numerical welding simulation

    Masahito MOCHIZUKI, Yoshiki MIKAMI, Masao TOYODA

    Journal of Constructional Steel　Vol. 10　p. 35-42　2002/11　Research paper (scientific journal)

  210. Effect of welding pass sequence on microstructure and hardness in multi-layered welded joints of beam-to-column connections of steel framed structures

    MIKAMI Yoshiki, MOCHIZUKI Masahito, TOYODA Masao

    p. 51-56　2002/11　Research paper (other academic)

  211. Effect of inter-pass temperature on distribution of microstructure and mechanical properties in multi-layered welded joints

    Y. Mikami, M. Mochizuki, M. Toyoda

    2002/06

Misc. 153

  1. Predict Fatigue Properties of Steel Using a Multiscale Model Considering Multiple Crack Problems

    Satoshi Abe, Hongchang Zhou, Yoshiki Mikami

    The first International Symposium for Young Researchers Challenges & Collaboration in the Research of Material Fracture, Hokkaido University，Japan　2025/03/17　Research paper, summary (international conference)

  2. Multiscale Model for Predicting Fatigue?Strength of Steels and Its Application to?Structural Components and Material Design

    Hongchang Zhou, Yoshiki Mikami

    The first International Symposium for Young Researchers Challenges & Collaboration in the Research of Material Fracture, Hokkaido University，Japan　2025/03/17　Research paper, summary (international conference)

  3. 破壊靭性試験における残留応力緩和処理による材料損傷挙動の結晶塑性論的検討

    三上欣希, Zhou Hongchang, 松崎匠, 荒木田椋太, 田川哲哉

    第252回 溶接構造研究委員会, 大阪府茨木市　2025/01/21　Research paper, summary (national, other academic conference)

  4. Alloying of low-carbon steel surface due to friction stir processing with WC tool wear

    Hajime Yamamoto, Yuji Yamamoto, Kazuhiro Ito, Yoshiki Mikami

    The 3rd Materials Research Meeting (MRM2023) / The 24th IUMRS-International Conference in Asia (IUMRS-ICA2023), 京都　2023/12　Research paper, summary (international conference)

  5. 高炭素鋼薄板の端部レーザ溶接における凝固割れに関する数値シミュレーション

    植村 幹太, Hong Seong Min, 三上 欣希, 伊藤 和博, 德永 仁寿, 富士本 博紀

    2023年度秋季全国大会, 茨城県つくば市　2023/09　Research paper, summary (national, other academic conference)

  6. Effect of Offset Distance on the Solidification Crack Initiation in the Carbon Steel Plate for the Melt-run Laser Welding

    洪 聖旻, 植村 幹太, 三上 欣希, 德永 仁寿, 富士本 博紀, 伊藤 和博

    2023年度秋季全国大会, 富山県富山市　2023/09　Research paper, summary (national, other academic conference)

  7. Simulation of Weld Residual Stress Distribution in Fracture Toughness Specimen and Its Experimental Validation

    Yoshiki Mikami, Takumi Ozawa, Tomoya Kawabata

    76th IIW Annual Assembly and International Conference, Singapore　2023/07　Research paper, summary (international conference)

  8. Adapted to generate compressive residual stress and retained austenite in a steel surface layer by friction stir processing with the WC tool

    Hajime Yamamoto, Yuji Yamamoto, Kazuhiro Ito, Yoshiki Mikami

    The 76th IIW Annual Assembly and International Conference on Welding and Joining, Singapore　2023/07　Research paper, summary (international conference)

  9. Outreach Activities on Welding and Joining at the JWRI, Osaka University

    MIKAMI Yoshiki, TANAKA Manabu

    Journal of the Japan Welding Society　Vol. 92　No. 1　p. 33-37　2023/01　Article, review, commentary, editorial, etc. (scientific journal)

  10. Post Weld Tungsten Alloying in a Topmost Steel Layer through Friction Stir Processing using a WC tool

    Kazuhiro ITO, Hajime YAMAMOTO, Yoshiki MIKAMI, Makoto TAKAHASHI

    VisualJW2022, 千里ライフサイエンスセンター　2022/10　Research paper, summary (international conference)

  11. 二相ステンレス鋼溶接金属の三次元組織モデルによる水素拡散・集積挙動の数値シミュレーション

    植村 幹太, 三上 欣希, 伊藤 和博

    （一社）溶接学会 2022年度 秋季全国大会, 島根県松江市　2022/09　Research paper, summary (national, other academic conference)

  12. WCツール摩擦攪拌プロセスにより鋼表層に生じる圧縮残留応力と残留オーステナイト

    山本 啓, 山元優士, 伊藤和博, 三上欣希

    公益社団法人 日本金属学会 2022年秋期(第171回)講演大会, 福岡県福岡市　2022/09　Research paper, summary (national, other academic conference)

  13. WCツール摩擦攪拌プロセスによる鋼表層への圧縮残留応力と残留オーステナイトの付与

    柳 悠輔, 山元優士, 山本 啓, 伊藤和博, 三上欣希

    一般社団法人 溶接学会 2022年度秋季全国大会, 島根県松江市　2022/09　Research paper, summary (national, other academic conference)

  14. Understanding the Mechanism of Weld Residual Stress Change by Local Compression Method

    Yoshiki Mikami, Takumi Ozawa, Tomoya Kawabata

    75th IIW Annual Assembly and International Conference Online 2020/7/19 6 2020/7/19, Tokyo, Japan　2022/07　Research paper, summary (international conference)

  15. Pre-crack straightening treatment for CTOD testing of welds with unchanged toughness evaluation

    Tomoya Kawabata, Yoshiki Mikami, Takumi Ozawa, Houichi Kitano

    75th IIW Annual Assembly and International Conference Online 2020/7/19 6 2020/7/19, Tokyo, Japan　2022/07　Research paper, summary (international conference)

  16. Identification for Better Local Process Condition with Bayesian Optimization

    Takumi Ozawa, Tomoya Kawabata, Yoshiki Mikami

    75th IIW Annual Assembly and International Conference Online 2020/7/19 6 2020/7/19, Tokyo, Japan　2022/07　Research paper, summary (international conference)

  17. Search for Good Local Compression Process Condition with Bayesian Optimization

    Takumi Ozawa, Tomoya Kawabata, Yoshiki Mikami

    23rd European Conference on Fracture, Funchal, Madeira, Portugal　2022/06　Research paper, summary (international conference)

  18. 破壊靭性試験における残留応力緩和処理による材料損傷挙動の結晶塑性論的検討

    三上 欣希, 中尾 俊貴, 伊藤 和博, 川畑 友弥

    第240回 溶接構造研究委員会, オンライン開催　2022/03　Research paper, summary (national, other academic conference)

  19. 破壊靱性値を維持する局部圧縮法

    小沢 匠, 小菅 寛輝, 三上 欣希, 川畑 友弥

    （一社）日本機械学会 M&M2021 材料力学カンファレンス, 名古屋大学 東山キャンパス（オンライン開催）　2021/09　Research paper, summary (national, other academic conference)

  20. 厚板多層溶接部の破壊靭性試験における残留応力緩和手法の検討

    三上 欣希, 小沢 匠, 川畑 友弥

    （一社）日本機械学会 M&M2021 材料力学カンファレンス, 名古屋大学 東山キャンパス（オンライン開催）　2021/09　Research paper, summary (national, other academic conference)

  21. 二相ステンレス鋼溶接部における水素割れに及ぼす微視組織形態の影響に関する検討

    三上 欣希, 伊藤 和博

    （一社）日本機械学会 M&M2021 材料力学カンファレンス, 名古屋大学 東山キャンパス（オンライン開催）　2021/09　Research paper, summary (national, other academic conference)

  22. 溶接部破壊靭性試験における負荷履歴の微視的影響に関する結晶塑性解析

    三上 欣希, 伊藤 和博, 中尾 俊貴, 川畑 友弥

    （一社）日本鉄鋼協会 第182回秋季講演大会, オンライン開催　2021/09　Research paper, summary (national, other academic conference)

  23. 破壊靭性試験における予ひずみの影響の結晶塑性解析による基礎的検討

    中尾 俊貴, 三上 欣希, 伊藤 和博, 川畑 友弥

    （一社）溶接学会 2021年度 秋季全国大会, WEB開催　2021/09　Research paper, summary (national, other academic conference)

  24. 摩擦攪拌プロセス施工鋼表層の残留応力とWCツール構成元素固溶量との関係

    山元 優士, 山本 啓, 伊藤 和博, 三上 欣希

    （一社）溶接学会 2021年度 秋季全国大会, WEB開催　2021/09　Research paper, summary (national, other academic conference)

  25. Local compression process avoiding toughness change

    Takumi Ozawa, Tomoya Kawabata, Yoshiki Mikami

    74th IIW Annual Assembly and International Conference Online 2020/7/19 6 2020/7/19, Online　2021/07　Research paper, summary (international conference)

  26. Feature of microstructure and its formation mechanism in a newly developed electro slag welding

    Tomonori Kakizaki, Shodai Koga, Hajime Yamamoto, Yoshiki Mikami, Kazuhiro Ito, Kei Yamazaki, Shuji Sasakura, Hirohisa Watanabe

    The 74th IIW on-line Assembly & International Conference, on line　2021/07　Research paper, summary (international conference)

  27. Feature of Microstructure and its Formation Mechanism in a Newly Developed Electro Slag Welding

    T. Kakizaki, S. Koga, H. Yamamoto, Y. Mikami, K. Ito, K. Yamazaki, S. Sasakura, H. Watanabe

    IIW-IX, On line　2021/03　Research paper, summary (international conference)

  28. 抵抗スポット溶接部のたがね試験における力学的挙動の数値シミュレーション

    三上 欣希

    第234回 溶接構造研究委員会, WEB開催　2021/02　Research paper, summary (national, other academic conference)

  29. 抵抗スポット溶接部のたがね試験における力学的挙動の数値シミュレーション

    三上 欣希, 天野 剛志, 吉野 鋭, 伊藤 和博

    （一社）溶接学会 2020年度 秋季全国大会, WEB開催　2020/09　Research paper, summary (national, other academic conference)

  30. Typical LC effect on crack front straightness and fracture toughness

    Takumi Ozawa, Hiroki Kosuge, Yoshiki Mikami, Tomoya Kawabata

    73rd IIW Annual Assembly and International Conference, Online　2020/07　Research paper, summary (international conference)

  31. W alloying due to WC tool wear during friction stir processing for fatigue strength improvement of high-strength low-alloy steel joints

    Shodai Koga, Hajime Yamamoto, Kazuhiro Ito, Makoto Takahashi, Yoshiki Mikami, Hidetoshi Fujii

    Visual-JW 2019 & WSE 2019, Osaka, Japan　2019/11　Research paper, summary (international conference)

  32. Direct application of friction stir processing to weld toes of high-strength low-alloy steel joints

    Hajime Yamamoto, Yoshikazu Danno, Kazuhiro Ito, Yoshiki Mikami, Hidetoshi Fujii

    International Conference on Materials and Systems for Sustainability 2019 (ICMaSS2019), Nagoya, Japan　2019/11　Research paper, summary (international conference)

  33. Simplified analysis of welding heat conduction behavior utilized neural network technique

    Houichi KITANO, Yoshiki MIKAMI, Kazuhiro ITO

    Visual-JW 2019 & WSE 2019, Osaka, Japan　2019/11　Research paper, summary (international conference)

  34. Effect of grain boundary geometry on opening and sliding behavior in ni-base alloy weld metal

    Takumi OKUDA, Keisuke TORIGATA, Daisuke ABE, Yoshiki MIKAMI, Kazuhiro ITO

    Visual-JW 2019 & WSE 2019, Osaka, Japan　2019/11　Research paper, summary (international conference)

  35. Numerical simulation of deformation behavior during chisel testing of resistance spot welds of high-strength steel

    Takuya OTSUKA, Yoshiki MIKAMI, Kazuhiro ITO

    Visual-JW 2019 & WSE 2019, Osaka, Japan　2019/11　Research paper, summary (international conference)

  36. A unique CEL numerical method on material flow in a molten pool of workpiece vibration assisted welding

    Habib Hamed Zargari, Kazuhiro Ito, Yoshiki Mikami, Abhay Sharma

    Visual-JW 2019 & WSE 2019, Osaka, Japan　2019/11　Research paper, summary (international conference)

  37. Weld toe modification using friction stir processing for fatigue strength improvement of high-strength low-alloy steel joints

    Hajime Yamamoto, Yoshikazu Danno, Kazuhiro Ito, Yoshiki Mikami, Hidetoshi Fujii

    International Symposium on Creation of Life Innovation Materials for Interdisciplinary and International Researcher Development Satellite (iLIM-s), Nagoya, Japan　2019/11　Research paper, summary (international conference)

  38. W alloying due to WC tool wear during friction stir processing for fatigue strength improvement of high-strength low-alloy steel joints

    Shodai Koga, Hajime Yamamoto, Kazuhiro Ito, Makoto Takahashi, Yoshiki Mikami, Hidetoshi Fujii

    The 4th International Symposium on Creation of Life Innovation Materials for Interdisciplinary and International Researcher Development (iLIM-4), Sendai, Japan　2019/10　Research paper, summary (international conference)

  39. 摩擦攪拌プロセスによるWCツール構成元素の低炭素鋼表面への供給とその組織形成に及ぼすツール摩耗挙動の影響

    今川 雄大, 山本 啓, 伊藤 和博, 三上 欣希, 藤井 英俊

    （一社）溶接学会 2019年度 秋季全国大会, 仙台　2019/09　Research paper, summary (national, other academic conference)

  40. 摩擦攪拌プロセスによるWCツール構成元素の低炭素鋼表面への供給とその組織形成に及ぼすツール摩耗挙動の影響

    今川 雄大, 山本 啓, 伊藤 和博, 三上 欣希, 藤井 英俊

    日本金属学会 2019年秋期(第165回)講演大会, 岡山　2019/09　Research paper, summary (national, other academic conference)

  41. 二相ステンレス鋼の微視組織を考慮した水素割れ発生特性の検討

    三上 欣希, 伊藤 和博, 松本 幸樹, 荻田 玄, 望月 正人

    （一社）溶接学会 2019年度 秋季全国大会, 仙台　2019/09　Research paper, summary (national, other academic conference)

  42. 微視的応力および拡散性水素濃度分布を考慮した二相ステンレス鋼の水素割れ発生特性の検討

    三上 欣希, 伊藤 和博, 松本 幸樹, 望月 正人

    （一社）日本鉄鋼協会 第178回秋季講演大会, 岡山　2019/09　Research paper, summary (national, other academic conference)

  43. 二相ステンレス鋼溶接金属の水素割れに及ぼす微視組織形態の影響に関する数値解析的検討

    三上 欣希, 伊藤 和博, 松本 幸樹, 望月 正人

    （一社）日本鉄鋼協会 第178回秋季講演大会, 岡山　2019/09　Research paper, summary (national, other academic conference)

  44. Numerical simulation of crack tip opening profile in fracture toughness test considering variation of welding residual stress distribution

    Yoshiki Mikami, Tomoya Kawabata

    72nd IIW Annual Assembly and International Conference, Bratislava, Slovakia　2019/07　Research paper, summary (international conference)

  45. 高強度低合金鋼溶接継手止端部への摩擦攪拌プロセスにおける施工条件と疲労強度改善の関係

    古賀 将大, 山本 啓, 伊藤 和博, 三上 欣希, 藤井 英俊

    （一社）溶接学会 平成31年度春季全国大会, 東京　2019/04　Research paper, summary (national, other academic conference)

  46. 二次元モデルを用いた溶接変形・残留応力の簡易解析に関する検討

    三上 欣希, 山岸 俊太, 望月 正人

    （一社）溶接学会 平成31年度春季全国大会, 東京　2019/04　Research paper, summary (national, other academic conference)

  47. 複相組織を有する高強度薄鋼板の水素割れ発生特性

    三上 欣希, 伊藤 和博, 田口 雄大, 望月 正人, 岡野 拓史, 石川 信行

    一般社団法人日本鉄鋼協会 第176回秋季講演大会, 東京　2019/03　Research paper, summary (national, other academic conference)

  48. Modeling of Multi-pass Welding, Specimen Machining, Residual Stress Treatment, and Bending Test of Thick section Welds

    Y. Mikami, T. Kawabata

    4th Osaka Uni-JWRI/NTU-MSE Workshop, Taipei, Taiwan　2019/03　Research paper, summary (international conference)

  49. 高強度低合金鋼溶接継手止端部への摩擦攪拌プロセスにおける施工条件と疲労強度改善の関係

    山本 啓、古賀 将大、伊藤 和博、三上 欣希、藤井 英俊

    （公社）日本金属学会 2019年春期大会, 東京　2019/03　Research paper, summary (national, other academic conference)

  50. Characterization of bending strength and interface microstructure in Mo/Cu explosive clads

    2019/03　Research paper, summary (national, other academic conference)

  51. 厚板多層溶接部の残留応力分布を考慮した破壊靭性試験プロセスの数値解析

    三上 欣希, 北野 萌一, 川畑 友弥

    一般社団法人日本鉄鋼協会 第176回秋季講演大会, 仙台　2018/09　Research paper, summary (national, other academic conference)

  52. 二相ステンレス鋼母材および溶接金属水素割れ発生特性評価

    松本 幸樹, 荻田 玄, 三上 欣希, 伊藤 和博

    一般社団法人日本鉄鋼協会 第176回秋季講演大会, 仙台　2018/09　Research paper, summary (national, other academic conference)

  53. Variation in the bending strength with collision velocity in W/Cu explosive welds

    2018/09　Research paper, summary (national, other academic conference)

  54. Through process modeling of the fracture toughness test of multipass welds incorporating residual stress distribution

    Yoshiki Mikami, Houichi Kitano, Tomoya Kawabata

    22nd European Conference on Fracture, Belgrade, Serbia　Vol. 13　p. 1804-1810　2018/08　Research paper, summary (international conference)

  55. Numerical simulation of microscopic residual stress evolution in polycrystalline aggregate subjected to weld thermal cycle

    Y. Mikami, W. Sadakane, M. Mochizuki

    71st IIW Annual Assembly and International Conference, Bali, Indonesia　2018/07　Research paper, summary (international conference)

  56. 球面先端形状ツールを用いた摩擦攪拌プロセスによる低炭素鋼溶接余盛止端部組織と形状の改善およびそれらの疲労強度への効果

    山本 啓, 段野 芳和, 伊藤 和博, 三上 欣希, 藤井 英俊

    （一社）溶接学会 平成30年度春季全国大会, 東京　2018/04　Research paper, summary (national, other academic conference)

  57. 水中衝撃波を用いた異材接合における界面近傍の温度場シミュレーション

    三上 欣希, PARCHURI Pradeep Kumar, 伊藤 和博, 外本 和幸

    一般社団法人 溶接学会 平成30年度春季全国大会, 東京　2018/04　Research paper, summary (national, other academic conference)

  58. 球面先端形状ツールを用いた摩擦攪拌プロセスによる低炭素鋼溶接余盛止端部の組織および形状改善と疲労強度に及ぼす影響

    山本 啓, 段野 芳和, 伊藤 和博, 三上 欣希, 藤井 英俊

    （公社）日本金属学会 2019年春期大会, 千葉　2018/03　Research paper, summary (national, other academic conference)

  59. CTODパラメータを用いた鋼材の破壊靭性評価における最近の規格改善活動

    川畑 友弥, 田川 哲哉, 三上 欣希

    一般社団法人 日本高圧力技術協会 平成29年度秋季講演会, 熊本　2017/12　Research paper, summary (national, other academic conference)

  60. 破壊靭性試験片に対する局部圧縮法による溶接残留応力除去処理の数値解析

    三上 欣希, 本多 正信, 望月 正人, 川畑 友弥

    一般社団法人 溶接学会 平成29年度秋季全国大会, 福岡　2017/09　Research paper, summary (national, other academic conference)

  61. 抵抗スポット溶接部の遅れ破壊挙動に及ぼす水素侵入環境の影響に関する数値解析的検討

    川邉 直雄, 松田 広志, 沖田 泰明, 池田 倫正, 三上 欣希, 望月 正人

    一般社団法人 溶接学会 平成29年度秋季全国大会, 福岡　2017/09　Research paper, summary (national, other academic conference)

  62. 余盛止端部への摩擦攪拌プロセスの適用とその疲労強度改善効果

    段野 芳和, 山本 啓, 伊藤 和博, 三上 欣希, 小濱 和之

    （一社）溶接学会 平成29年秋春季全国大会, 福岡　2017/09　Research paper, summary (national, other academic conference)

  63. 溶接余盛止端部への直接摩擦攪拌プロセスが疲労強度へ及ぼす効果

    段野 芳和, 山本 啓, 伊藤 和博, 三上 欣希, 小濱 和之

    （公社）日本金属学会 2018年秋期大会, 北海道　2017/09　Research paper, summary (national, other academic conference)

  64. 抵抗スポット溶接部における温度・応力変化を考慮した水素拡散解析

    川邉 直雄, 松田 広志, 沖田 泰明, 池田 倫正, 三上 欣希, 望月 正人

    一般社団法人 溶接学会 平成29年度春季全国大会, 東京　2017/04　Research paper, summary (national, other academic conference)

  65. Effect of loading on stress distribution in welded joint with low-transformation-temperature welding wire

    Yoshiki MIKAMI, Kazushi TANIGAWA, Hisashi SERIZAWA, Masahito MOCHIZUHKI

    Proceedings of the International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation (Visual-JW 2016)　Vol. 2　p. 7-8　2016/10

  66. Modeling of hydrogen diffusion behavior considering the microstructure of duplex stainless steel weld metal

    Yuhei SHIBAMOTO, Yoshiki MIKAMI, Masahito MOCHIZUKI

    Proceedings of the International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation (Visual-JW 2016)　Vol. 1　p. 253-254　2016/10

  67. Numerical simulation of relationship between member dimension and weld induced stress in plate-fin type heat exchanger

    Shunta YAMAGISHI, Yoshiki MIKAMI, Kenji OTANI, Norihiro HISADA, Shigeru AOKI, Masahito MOCHIZUKI

    Proceedings of the International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation (Visual-JW 2016)　Vol. 1　p. 227-228　2016/10

  68. Numerical simulation of hydrogen diffusion and accumulation behavior under residual stress distribution in resistance spot welds

    Takeharu KIZAKI, Yoshiki MIKAMI, Nao KAWABE, Hiroshi MATSUDA, Rinsei IKEDA, Masahito MOCHIZUKI

    Proceedings of the International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation (Visual-JW 2016)　Vol. 1　p. 225-226　2016/10

  69. Numerical simulation of microscopic residual stress distribution in weld metal considering anisotropic mechanical behavior of crystals

    Wataru SADAKANE, Yoshiki MIKAMI, Masahito MOCHIZUKI

    Proceedings of the International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation (Visual-JW 2016)　Vol. 1　p. 223-224　2016/10

  70. Influence of restraint conditions on residual stress reduction using low-transformation-temperature welding wire

    Kazushi TANIGAWA, Yoshiki MIKAMI, Houichi KITANO, Terumi NAKAMURA, Masahito MOCHIZUKI

    Proceedings of the International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation (Visual-JW 2016)　Vol. 1　p. 221-222　2016/10

  71. A Study on Controlling Temperature History during Spot Welding using Controlling Electrode Force

    Iyota Muneyoshi, Mikami Yoshiki, Taniguchi Koichi, Ikeda Rinsei, Mochizuki Masahito

    Preprints of the National Meeting of JWS　Vol. 2015　No. 0　p. 326-327　2015

    Publisher: JAPAN WELDING SOCIETY

  72. Effect of Weld Pass Deposition on Residual Stress Distribution of Repair Welds Using Low-transformation-temperature Welding Wire

    Yoshiki Mikami, Naoki Yabuuchi, Terumi Nakamura, Masahito Mochizuki

    Proceedings of the Visual-JW2014　2014/11　Research paper, summary (international conference)

  73. Application of Homogenization Approach to Evaluation of Welding Residual Stress of Plate-Fin Type Heat Exchanger

    Kaname TATANI, Yoshiki MIKAMI, Kenji OTANI, Norihiro HISADA, Shigeru AOKI, Masahito MOCHIZUKI

    Proceedings of the Visual-JW2014　2014/11　Research paper, summary (international conference)

  74. Numerical Simulation of Strain Distribution around Crack Tip in Lamellar Microstructured Steel under Cyclic Loading

    Mikoto KANI, Yoshiki MIKAMI, Hiroshi SHIMANUKI, Masahito MOCHIZUKI

    Proceedings of the Visual-JW2014　2014/11　Research paper, summary (international conference)

  75. Hydrogen diffusion simulation in dual phase microstructure considering the difference in diffusion constants

    Gen OGITA, Yoshiki MIKAMI, Masahito MOCHIZUKI

    Proceedings of the International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation (Visual-JW 2014)　p. 167-168　2014/11　Research paper, summary (international conference)

  76. Effect of Irradiation Hardening on Microscopic Stress Distribution in Austenitic Stainless Steels

    Takamasa MIZOGUCHI, Yoshiki MIKAMI, Masahito MOCHIZUKI

    Proceedings of the 2nd International Conference on Maintenance Science and Technology (ICMST-Kobe 2014)　p. 189-190　2014/11

  77. Effect of Weld Pass Sequence on Residual Stress Distribution in Repair Welds of Low-transformation-temperature Welding Wire

    Mikami Yoshiki, Yabuuchi Naoki, Nakamura Terumi, Mochizuki Masahito

    Preprints of the National Meeting of JWS　Vol. 2014　No. 0　p. 364-365　2014

    Publisher: JAPAN WELDING SOCIETY

  78. The Effect of Residual Stress on Joint Strength of Spot Welded High-strength Steel Sheets

    Iyota Muneyoshi, Mikami Yoshiki, Taniguchi Koichi, Ikeda Rinsei, Mochizuki Masahito

    Preprints of the National Meeting of JWS　Vol. 2014　No. 0　p. 32-33　2014

    Publisher: JAPAN WELDING SOCIETY

  79. Proposal of Measurement of Non-Equbiaxial Residual Stress Field using Instrumented Indentation Technique (IIT) without Non-Stressed Reference Load

    MIKAMI Yoshiki, NAKATSU Yasuhiro, MOCHIZUKI Masahito, TOYODA Masao, HASHIBA Yuji, ICHIKAWA Kazutoshi

    Preprints of the National Meeting of JWS　Vol. 93　No. 72　p. 248-249　2013/08/12

    Publisher: JAPAN WELDING SOCIETY

  80. The Effect of Welding Condition on Residual Stress Measurements in Resistance Spot Welds

    IYOTA Muneyoshi, MIKAMI Yoshiki, MOCHIZUKI Masahito, TANIGUCHI Koichi, IKEDA Rinsei

    Preprints of the National Meeting of JWS　Vol. 92　p. 164-165　2013/03/21

    Publisher: JAPAN WELDING SOCIETY

  81. Estimation of three-dimensional microscopic strain component by digital image correlation and crystal orientation analysis

    Kazuo ODA, Yoshiki MIKAMI, Masahito MOCHIZUKI

    Proceedings of International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation (Visual-JW 2012)　p. 365-366　2012/12　Research paper, summary (international conference)

  82. Modeling of damage at grain boundary in Ni base alloy welds based on microscopic stress simulation

    Takahiro SAKAI, Yoshiki MIKAMI, Masahito MOCHIZUKI

    Proceedings of International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation (Visual-JW 2012)　p. 303-304　2012/11

  83. Effect of microscopic distribution of strength property and residual stress caused by martensitic transformation on stress distribution around crack

    Naoki YABUUCHI, Yoshiki MIKAMI, Masahito MOCHIZUKI, Hiroshi SHIMANUKI

    Proceedings of International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation (Visual-JW 2012)　p. 305-306　2012/11

  84. Numerical simulation of diffusible hydrogen distribution in austenite-martensite microstructure

    Yoshiki MIKAMI, Noriyoshi KUBOTA, Masahito MOCHIZUKI

    Proceedings of International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation (Visual-JW 2012)　p. 115-116　2012/11

  85. Visualization of machining and welding residual stress variations by numerical simulation in austenitic stainless steel

    Ryohei IHARA, Shigetaka OKANO, Tadafumi HASHIMOTO, Yoshiki MIKAMI, Masahito MOCHIZUKI

    Proceedings of International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation (Visual-JW 2012)　p. 313-314　2012/11

  86. Numerical Simulation Method of Hydrogen Diffusion Considering Microstructure and Microscopic Stress Distribution

    MIKAMI Yoshiki, KUBOTA Noriyoshi, MOCHIZUKI Masahito

    Preprints of the National Meeting of JWS　Vol. 91　p. 132-133　2012/09/03

    Publisher: JAPAN WELDING SOCIETY

  87. Calculation Method of Three-dimensional Strain Distribution with Combination of Digital Image Correlation and Crystal Orientation Analysis

    ODA Kazuo, MIKAMI Yoshiki, MOCHIZUKI Masahito

    Preprints of the National Meeting of JWS　Vol. 91　p. 286-287　2012/09/03

    Publisher: JAPAN WELDING SOCIETY

  88. Study on Characteristics of Stress Corrosoin Cracking Occurrence in Ni Base Alloy Welds Based on Microscopic Stress Distribution Calculated by Numerical Simulation

    SAKAI Takahiro, MIKAMI Yoshiki, MOCHIZUKI Masahito

    Preprints of the National Meeting of JWS　Vol. 91　p. 360-361　2012/09/03

    Publisher: JAPAN WELDING SOCIETY

  89. Numerical Simulation of Variation Behavior of Machined Residual Stress by Welding in Austenitic Stainless Steel

    IHARA Ryohei, OKANO Shigetaka, HASHIMOTO Tadafumi, MIKAMI Yoshiki, MOCHIZUKI Masahito

    Preprints of the National Meeting of JWS　Vol. 91　p. 362-363　2012/09/03

    Publisher: JAPAN WELDING SOCIETY

  90. Residual Stress Measurement by X-ray Diffraction Method in Resistance Spot Welds

    IYOTA Muneyoshi, MIKAMI Yoshiki, MOCHIZUKI Masahito, HASHIMOTO Tadafumi, TANIGUCHI Koichi, IKEDA Rinsei

    Preprints of the National Meeting of JWS　Vol. 90　p. 252-253　2012/03/15

    Publisher: JAPAN WELDING SOCIETY

  91. 両端拘束継手モデルによる高強度鋼溶接金属部の残留応力に及ぼす拘束長さの影響の検討

    久保田 典禎, 三上 欣希, 平岡 和雄, 望月 正人

    溶接学会全国大会講演概要　p. 80-80　2011/11　Research paper, summary (national, other academic conference)

  92. 三次元柱状晶モデルによるNi基合金クラッド溶接金属の微視的応力解析

    堺 貴洋, 三上 欣希, 望月 正人

    溶接学会全国大会講演概要　2011/11　Research paper, summary (national, other academic conference)

  93. Effect of Restraint Length on Residual Stress in High-Strength Weld Metal of Both-End-Fixed Joint Model

    KUBOTA Noriyoshi, MIKAMI Yoshiki, MOCHIZUKI Masahito, HIRAOKA Kazuo

    Vol. 89　p. 166-167　2011/08/18

  94. Ni基合金の結晶粒界近傍に発生する微視的応力に及ぼす結晶方位差の影響

    三上 欣希, 曽我部 恵典, 望月 正人

    溶接学会全国大会講演概要　2011　Research paper, summary (national, other academic conference)

  95. Numerical simulation of microscopic stress in SCC test specimen considering crystalline orientation distribution

    Y. Mikami, K. Sogabe, R. Uraguchi, M. Mochizuki

    溶接学会全国大会講演概要　p. 220-221　2010/04

  96. Numerical Simulation of Hydrogen Diffusion in High-Strength Weld Metal Considering Phase Transformation Effect

    KUBOTA NORIYOSHI, MIKAMI YOSHIKI, MOCHIZUKI MASAHITO

    Preprints of the National Meeting of JWS　Vol. 2010　No. 0　p. 87-87　2010

    Publisher: JAPAN WELDING SOCIETY

  97. The effect of grain orientation on microscopic stress distribution in weld metal of Ni-based alloy

    SOGABE Keisuke, MIKAMI Yoshiki, NISHIKAWA Satoru, MOCHIZUKI Masahito

    Preprints of the National Meeting of JWS　Vol. 2010　No. 0　p. 30-30　2010

    Publisher: JAPAN WELDING SOCIETY

  98. Analytical examination of residual stress distributions generated by sufrace machining in austenitic stainless steel welded joints

    IHARA Ryohei, KATSUYAMA Jinya, ONIZAWA Kunio, HASHIMOTO Tadafumi, MIKAMI Yoshiki, MOCHIZUKI Masahito

    Preprints of the National Meeting of J.W.S　Vol. 85　p. 378-379　2009/09

  99. マルチスケール解析手法による溶接部の微視的残留応力分布特性の検討

    曽我部 恵典, 三上 欣希, 倉敷 哲生, 望月 正人

    溶接学会全国大会講演概要　p. 34-35　2009/04　Research paper, summary (national, other academic conference)

  100. Ni-Cr系高強度溶接金属を用いた割れ試験における力学的挙動

    伊與田 宗慶, 三上 欣希, 井上 裕滋, 糟谷 正, 望月 正人

    溶接学会全国大会講演概要　2009　Research paper, summary (national, other academic conference)

  101. 溶接部の不均質材料組織を考慮した微視的残留応力分布特性の評価

    三上 欣希, 浦口 良介, 曽我部 恵典, 望月 正人, 藤本 慎司

    溶接学会全国大会講演概要　2009　Research paper, summary (national, other academic conference)

  102. 応力腐食割れ発生に及ぼす微視的応力の影響に関する数値解析的検討

    三上 欣希, 曽我部 恵典, 浦口 良介, 望月 正人

    溶接学会全国大会講演概要　2009　Research paper, summary (national, other academic conference)

  103. PARAMETRIC STUDY ON THE EFFECT OF GEOMETRIC IMPERFECTIONS ON THE BENDING CAPACITY OF HIGH-STRENGTH LINEPIPES

    Takashi Sato, Yoshiki Mikami, Masahito Mochizuki, Nobuhisa Suzuki, Masao Toyoda

    IPC2008: PROCEEDINGS OF THE ASME INTERNATIONAL PIPELINE CONFERENCE - 2008, VOL 3　Vol. IPC2008-64544　p. 745-753　2009

  104. フェライト・マルテンサイト層状組織鋼の疲労き裂進展特性に及ぼす微視的残留応力の影響に関する数値解析的検討

    三上 欣希, 稲生 明弘, 島貫 広志, 望月 正人, 豊田 政男

    溶接学会全国大会講演概要　2008　Research paper, summary (national, other academic conference)

  105. 自動車部品の溶接変形予測のための簡略化解析に関する検討

    望月 正人, 多田羅 晃弘, 三上 欣希, 豊田 政男, 伊澤 佳典

    溶接学会全国大会講演概要　2008　Research paper, summary (national, other academic conference)

  106. Analytical study on effects of strain distribution in welding start/end on welding distortion

    Masahito Mochizuki, Yoshiki Mikami, Hiroki Yamasaki, Masao Toyoda

    Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society　Vol. 26　No. 2　p. 145-151　2008

  107. EFFECT OF TRANSFORMATION TEMPERATURE OF WELD METAL ON WELDING DISTORTION

    Yasushi Morikage, Takahiro Kubo, Koichi Yasuda, Yoshiki Mikami, Masahito Mochizuki, Hirohisa Watanabe

    PROCEEDINGS OF THE 27TH INTERNATIONAL CONFERENCE ON OFFSHORE MECHANICS AND ARCTIC ENGINEERING - 2008, VOL 5　Vol. OMAE2008-57709　p. 429-438　2008

  108. Reduction of Angular Distortion by Transformation Expansion of Weld Metal in Joints with External Restraints

    MIKAMI Yoshiki, MOCHIZUKI Masahito, TOYODA Masao

    Pre-Prints of the National Meeting of JWS　Vol. 81　p. 122-123　2007/09/19

    Publisher: Japan Welding Society

  109. 溶接金属の変態膨張による角変形低減に及ぼす溶接入熱条件の影響

    溶接学会全国大会講演概要　2007　Rapid communication, short report, research note, etc. (bulletin of university, research institution)

  110. Numerical Analysis of Weld Distortion Considering Phase Transformation Effects (Henry Granjon Prize Awarded Paper)

    IIW Doc. X-1620-07　2007

  111. Evaluation of Heterogeneity of Microscopic Deformation and Stress Distribution in Steel and Its Weld by FEM-MD Coupling Simulation

    IIW Doc. X-1617-07　2007

  112. Evaluation of Fracture Toughness of Multipass Weld Metal Considering Distribution of Microstructure

    Journal of Constructional Steel　Vol. Vol. 15, pp. 659-667　2007

  113. Numerical Analysis of Weld Distortion Considering Phase Transformation Effects (Henry Granjon Prize Awarded Paper)

    IIW Doc. X-1620-07　2007

  114. Evaluation of Heterogeneity of Microscopic Deformation and Stress Distribution in Steel and Its Weld by FEM-MD Coupling Simulation

    IIW Doc. X-1617-07　2007

  115. 溶接継手の角変形低減に有効な溶接金属の変態開始温度に関する考察

    三上 欣希, 望月 正人, 豊田 政男

    溶接学会全国大会講演概要　p. 152-153　2006/09

  116. 低変態温度溶接材料を用いたT字溶接継手の変形挙動

    森影 康, 久保 高宏, 安田 功一, 三上 欣希, 望月 正人

    溶接学会全国大会講演概要　2006　Research paper, summary (national, other academic conference)

  117. 溶接継手の角変形に及ぼす溶接金属の変態膨張特性の影響

    望月 正人, 三上 欣希, 豊田 政男

    溶接学会全国大会講演概要　2006　Research paper, summary (national, other academic conference)

  118. Numerical Simulations of Weld Hardness Distributions in Ultra-Narrow Gap GMA Welding, Evaluation of Weld Hardness Distributions by Numerical Simulations of Welding Thermal Cycles and Microstructural Phase Fractions (1st Report)

    Welding International　Vol. Vol. 20, No. 9, pp. 677-683　2006

  119. In-Process Control of Weld Distortion by Using Phase Transformation Effects

    Vol. No. IX-3　2006

  120. In-Process Control of Weld Distortion by Using Phase Transformation Effects

    8th International Seminar on Numerical Analysis of Weldability, Graz-Seggau, Austria, No. IX-3　2006

  121. Evaluation of Microstructural Phase Fractions and Hardness Distributions of Weld Metal Subjected to Multiple Thermal Cycle, Evaluation of Weld Hardness Distributions by Numerical Simulations of Welding Thermal Cycles and Microstructural Phase Fractions・・・

    Welding International　Vol. Vol. 20, No. 9, pp. 684-691　2006

  122. 変態温度を制御した溶接材料による施工時の変形低減と使用時の疲労強度向上

    第10回機械・構造物の強度設計,安全性評価に関するシンポジウム講演論文集, 京都 (日本材料学会会議室)　Vol. pp. 25-28　2006

  123. Measurement and Numerical Simulation of Angular Distortion of Fillet Welded T-joints-Welding Angular Distortion Control by Transformation Expansion of Weld Metals (Report 1)-:—Welding Angular Distortion Control by Transformation Expansion of Weld Metals (Report 1)—

    MIKAMI Yoshiki, MORIKAGE Yasushi, MOCHIZUKI Masahito, TOYODA Masao

    QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY　Vol. 24　No. 4　p. 312-323　2006

    Publisher: JAPAN WELDING SOCIETY

  124. Numerical Simulations of Weld Hardness Distributions in Ultra-Narrow Gap GMA Welding, Evaluation of Weld Hardness Distributions by Numerical Simulations of Welding Thermal Cycles and Microstructural Phase Fractions (1st Report)

    Welding International　Vol. Vol. 20, No. 9, pp. 677-683　2006

  125. In-Process Control of Weld Distortion by Using Phase Transformation Effects

    Vol. No. IX-3　2006

  126. In-Process Control of Weld Distortion by Using Phase Transformation Effects

    8th International Seminar on Numerical Analysis of Weldability, Graz-Seggau, Austria, No. IX-3　2006

  127. Evaluation of Microstructural Phase Fractions and Hardness Distributions of Weld Metal Subjected to Multiple Thermal Cycle, Evaluation of Weld Hardness Distributions by Numerical Simulations of Welding Thermal Cycles and Microstructural Phase Fractions・・・

    Welding International　Vol. Vol. 20, No. 9, pp. 684-691　2006

  128. 溶接変形に及ぼす始終端部の影響に関する解析的検討

    望月 正人, 山崎 紘樹, 三上 欣希, 豊田 政男

    溶接学会全国大会講演概要　p. 144-145　2005/03　Research paper, summary (national, other academic conference)

  129. T型すみ肉溶接継手の溶接変形挙動の数値解析 : すみ肉溶接継手の溶接変形評価(第2報)

    三上 欣希, 望月 正人, 豊田 政男, 森影 康, 猪瀬 幸太郎, 中島 康雅

    溶接学会全国大会講演概要　p. 142-143　2005/03　Research paper, summary (national, other academic conference)

  130. T字すみ肉溶接継手における変形挙動 : すみ肉溶接継手の溶接変形評価(第1報)

    森影 康, 久保 高宏, 安田 功一, 三上 欣希, 望月 正人, 豊田 政男

    溶接学会全国大会講演概要　p. 140-141　2005/03　Research paper, summary (national, other academic conference)

  131. 低変態温度溶接材料を用いた継手の溶接変形挙動

    三上 欣希, 森影 康, 望月 正人, 豊田 政男

    溶接学会全国大会講演概要　2005　Research paper, summary (national, other academic conference)

  132. Welding Distortion Behavior of Steel Welds with Low-temperature Transformation Welding Wire

    57th Annual Assembly of the International Institute of Welding, IIW Doc. XV-1196-2005, Prague, Czech　2005

  133. Welding Distortion Behavior of Steel Welds with Low-temperature Transformation Welding Wire

    Proceedings of the 4th German-Japanese Seminar on Materials, Processes and Components, No. 11, Karlsruhe, Germany　2005

  134. Evaluation of Relationship between Transformation Expansion of Weld Metal and Weld Distortion through Numerical Simulation Considering Phase Transformation Effect

    57th Annual Assembly of the International Institute of Welding, IIW Doc. X-1582-2005, Prague, Czech　2005

  135. Continuous Measurement and Three-dimensional FEM Simulation of Transient Distortion in Welded Joint with Low-temperature Transformation Welding Wire

    Proceedings of the 4th German-Japanese Seminar on Materials, Processes and Components, No. 12, Karlsruhe, Germany　2005

  136. Welding Distortion Behavior of Steel Welds with Low-temperature Transformation Welding Wire

    57th Annual Assembly of the International Institute of Welding, IIW Doc. XV-1196-2005, Prague, Czech　2005

  137. Welding Distortion Behavior of Steel Welds with Low-temperature Transformation Welding Wire

    Proceedings of the 4th German-Japanese Seminar on Materials, Processes and Components, No. 11, Karlsruhe, Germany　2005

  138. Evaluation of Relationship between Transformation Expansion of Weld Metal and Weld Distortion through Numerical Simulation Considering Phase Transformation Effect

    57th Annual Assembly of the International Institute of Welding, IIW Doc. X-1582-2005, Prague, Czech　2005

  139. Continuous Measurement and Three-dimensional FEM Simulation of Transient Distortion in Welded Joint with Low-temperature Transformation Welding Wire

    Proceedings of the 4th German-Japanese Seminar on Materials, Processes and Components, No. 12, Karlsruhe, Germany　2005

  140. 溶接熱サイクルおよび組織分率の数値解析による多層溶接金属の硬さ分布特性の評価

    三上 欣希, 望月 正人, 橋場 裕治, 長谷川 俊永, 大北 茂, 豊田 政男

    溶接学会全国大会講演概要　2004　Research paper, summary (national, other academic conference)

  141. 超狭開先アーク溶接部の硬さ分布特性の解析的評価

    望月 正人, 三上 欣希, 中村 照美, 平岡 和雄, 豊田 政男

    溶接学会全国大会講演概要　2004　Research paper, summary (national, other academic conference)

  142. Metallurgical and Mechanical Heterogeneity in Weld Materials Considering Multiple Heat Cycles and Phase Transformation

    International Symposium on Advanced Structural and Functional Materials Design, Suita, Japan, No. A204　2004

  143. Evaluation of Hardness in Welded Joints by Numerical Simulation of Weld Thermal Cycle and Microphase - Challenge to Prediction of Joint Performance of Ultra-High Strength Steel -

    Vol. pp. 246-247　2004

  144. Evaluation of Hardness and Microstructure in Welds Considering Weld Thermal Cycle and Phase Transformation

    57th Annual Assembly of the International Institute of Welding, Osaka, Japan, IIW Doc. X-1562-2004　2004

  145. Application of Numerical Simulation Considering the Effect of Phase Transformation to the Estimation of Hardness Distribution in Welds

    International Symposium on Advanced Structural and Functional Materials Design, Suita, Japan, No. B-37　2004

  146. Metallurgical and Mechanical Heterogeneity in Weld Materials Considering Multiple Heat Cycles and Phase Transformation

    International Symposium on Advanced Structural and Functional Materials Design, Suita, Japan, No. A204　2004

  147. Evaluation of Hardness in Welded Joints by Numerical Simulation of Weld Thermal Cycle and Microphase - Challenge to Prediction of Joint Performance of Ultra-High Strength Steel -

    Vol. pp. 246-247　2004

  148. Evaluation of Hardness and Microstructure in Welds Considering Weld Thermal Cycle and Phase Transformation

    57th Annual Assembly of the International Institute of Welding, Osaka, Japan, IIW Doc. X-1562-2004　2004

  149. Application of Numerical Simulation Considering the Effect of Phase Transformation to the Estimation of Hardness Distribution in Welds

    International Symposium on Advanced Structural and Functional Materials Design, Suita, Japan, No. B-37　2004

  150. 建築鉄骨柱梁溶接部の強度および靭性に及ぼす積層手順の影響に関する実験的検討

    三上 欣希, 中津 康博, 望月 正人, 豊田 政男, 橋場 裕治, 市川和利

    溶接学会全国大会講演概要　p. 248-249　2003/04　Research paper, summary (national, other academic conference)

  151. The Effect of Welding Pass Sequence on Microstructure and Hardness in Multi-layered Welded Joints of Beam-to-Column Connections of Steel Framed Structures

    MIKAMI Yoshiki, MOCHIZUKI Masahito, TOYODA Masao

    Vol. 71　p. 216-217　2002/09/03

    Publisher: 溶接学会

  152. Effect of Inter-Pass Temperature on Distribution of Microstructure and Mechanical Properties in Multi-Layered Welded Joints

    55th Annual Assembly of the International Institute of Welding, Copenhagen, Denmark, IIW Doc. X-1499-2002　2002

  153. Effect of Inter-Pass Temperature on Distribution of Microstructure and Mechanical Properties in Multi-Layered Welded Joints

    55th Annual Assembly of the International Institute of Welding, Copenhagen, Denmark, IIW Doc. X-1499-2002　2002

Publications 5

  1. 3.3 微視的応力場によるSCC発生特性評価（第I編 溶接冶金現象のコンピュータ・シミュレーション / 第3章 特性予測シミュレーション）

    三上 欣希

    一般社団法人 溶接学会 溶接冶金研究委員会　2016/06　Scholarly book

  2. 4.2.2.3 溶接部の応力分布を考慮した水素拡散集積解析（第I編 溶接冶金現象のコンピュータ・シミュレーション / 第4章 溶接割れシミュレーション）

    三上 欣希

    一般社団法人 溶接学会 溶接冶金研究委員会　2016/06　Scholarly book

  3. 2.4 EBSDによる微視的応力・ひずみ測定（第II編 溶接冶金現象の可視化 / 第2章 電子線後方散乱回折（EBSD）分析）

    三上 欣希

    一般社団法人 溶接学会 溶接冶金研究委員会　2016/06　Scholarly book

  4. Metallographical Atlas of Steel and Non-ferrous Alloy Welds

    Yoshiki Mikami, Masahito Mochizuki

    Japan Welding Society　2013/02　Scholarly book

  5. Metallographical Atlas of Steel and Non-ferrous Alloy Welds

    Yoshiki Mikami, Masahito Mochizuki

    Japan Welding Society　2013/02　Scholarly book

Presentations 9

  1. 水素割れ評価に向けた材料組織レベルの応力および水素濃度分布の評価

    三上欣希

    一般社団法人軽金属学会 アルミニウム中の水素と材料物性研究部会　2022/03

  2. 応力および水素濃度の微視的分布に基づく二相ステンレス鋼溶接金属の水素割れ発生特性の検討

    三上欣希

    2022年度第4回特殊材料溶接研究委員会 本委員会　2022/03

  3. 二相ステンレス鋼の水素割れ発生特性に関する微視組織レベルの応力および拡散性水素濃度分布に基づく考察

    三上 欣希

    一般社団法人 日本溶接協会 2019年度 第3回（通算第293回）化学機械溶接研究委員会　2019/12

  4. 溶接部破壊靱性試験手法の高度化に向けた残留応力シミュレーションの応用

    三上 欣希

    ベトナム溶接研究会ホーチミンセミナー　2019/10

  5. 溶接・接合にともなう材料・力学挙動を考慮した継手性能評価

    三上 欣希

    大阪大学接合科学研究所 第16回 産学連携シンポジウム　2019/05

  6. 抵抗スポット溶接部のタガネ試験シミュレーション

    三上 欣希

    一般社団法人日本溶接協会（JWES）自動車部会（AMD）ISMAプロジェクト成果報告会　2019/05

  7. 溶接継手 CTOD 試験片の疲労き裂導入における残留応力前処理手法の検討

    三上 欣希

    破壊靭性試験規格の変遷と試験規格改正に対する鉄鋼部会の取組み－CTOD試験法WES1108およびISO15653の主な改正点－（第17回溶接構造用鋼材に関する研究発表会）　2018/11

  8. 応力分布および拡散性水素濃度分布を考慮した局所限界条件に基づく高強度鋼溶接金属の低温割れ発生特性に関する検討

    三上 欣希

    一般社団法人 溶接学会 平成29年度秋季全国大会 平成28年度溶接学会論文賞受賞記念講演　2017/09

  9. 応力場および材料組織を考慮した水素拡散・集積挙動シミュレーション

    三上 欣希

    JWSブリテン16「溶接冶金現象のシミュレーションと可視化」出版記念シンポジウム　2017/05

Institutional Repository 2

Content Published in the University of Osaka Institutional Repository (OUKA)

  1. Compressive residual stress applied to a low-carbon steel surface alloyed with WC tool constituent elements according to friction stir processing

    Yamamoto Hajime, Yamamoto Yuji, Ito Kazuhiro, Mikami Yoshiki

    Materials and Design　Vol. 244　2024/08/01

  2. 溶接熱履歴にともなう相変態を考慮した数値解析手法とその溶接変形低減への展開

    三上 欣希