Motomichi Yamamoto

Last Updated :2024/02/02

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Professor
Web Site
E-mail
motoyamahiroshima-u.ac.jp
Other Contact Details
"1-4-1, KAGAMIYAMA, HIGASHI-HIROSHIMA, HIROSHIMA", Japan
TEL : (+81)824-24-7815 FAX : (+81)824-24-7815
Self-introduction
Welding & joining Strength & fracture evaluation Laser processing & process imaging technology

Basic Information

Major Professional Backgrounds

  • 1995/04/01, 2001/03/31, Hiroshima University, Faculty of Engineering, Research Associate
  • 2001/04/01, 2001/04/01, Hiroshima University, Graduate School of Engineering, Research Associate
  • 2008/04/01, 2019/03/31, Hiroshima University, Graduate School of Engineering, Associate Professor
  • 2006/04/01, 2007/03/31, University of Toronto, Department of Material Science and Engineering, Faculty of Applied Science and Engineering, Visiting Researcher
  • 2019/04/01, 2020/03/31, Hiroshima University, Graduate School of Engineering, Professor

Educational Backgrounds

  • Hiroshima University, Graduate School, Division of Engineering, Japan, 1993/04, 1995/03
  • Hiroshima University, Faculty of Engineering, Japan, 1989/04, 1993/03

Academic Degrees

  • Doctor of Engineering, Hiroshima University
  • Master of Engineering, Hiroshima University

Educational Activity

  • [Bachelor Degree Program] School of Engineering : Cluster 1(Mechanical Systems, Transportation, Material and Energy) : Program of Material Processing
  • [Master's Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Mechanical Engineering Program
  • [Doctoral Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Mechanical Engineering Program

In Charge of Primary Major Programs

  • Mechanical System Engineering

Research Fields

  • Engineering;Integrated engineering;Naval and maritime engineering
  • Engineering;Material engineering;Material processing / Microstructural control engineering

Research Keywords

  • Welding
  • Laser process
  • Hot-wire
  • Elast-plastic analysis
  • Friction stir spot welding
  • Fracture mechanics
  • Welded structure strength

Affiliated Academic Societies

  • The Japan Society of Mechanical Engineers
  • Japan Welding Socieety
  • The Japan Society of Naval Architects and Ocean Engineers
  • The Iron and Steel Institution of Japan
  • Japan Laser Processing Society

Educational Activity

Course in Charge

  1. 2023, Liberal Arts Education Program1, 4Term, Introduction to Mechanical Engineering
  2. 2023, Liberal Arts Education Program1, 1Term, Introductory Seminar for First-Year Students
  3. 2023, Undergraduate Education, 3Term, Introduction of Mechanical and Transportation Engineering
  4. 2023, Undergraduate Education, Second Semester, Experiments in Mechanical Engineering II
  5. 2023, Undergraduate Education, Second Semester, Machine Design and Drawing
  6. 2023, Undergraduate Education, Second Semester, Machine Design and Drawing
  7. 2023, Undergraduate Education, Second Semester, Machine Design and Drawing
  8. 2023, Undergraduate Education, 2Term, Fundamentals of Materials Processing
  9. 2023, Undergraduate Education, 2Term, Fusion and Solidification Processings I
  10. 2023, Undergraduate Education, Year, Graduation Thesis
  11. 2023, Undergraduate Education, 4Term, Mechanical Behavior and Strength of Engineering Materials
  12. 2023, Graduate Education (Master's Program) , 1Term, Special Exercises on Mechanical Engineering A
  13. 2023, Graduate Education (Master's Program) , 2Term, Special Exercises on Mechanical Engineering A
  14. 2023, Graduate Education (Master's Program) , 3Term, Special Exercises on Mechanical Engineering A
  15. 2023, Graduate Education (Master's Program) , 4Term, Special Exercises on Mechanical Engineering A
  16. 2023, Graduate Education (Master's Program) , 3Term, Special Exercises on Mechanical Engineering B
  17. 2023, Graduate Education (Master's Program) , 4Term, Special Exercises on Mechanical Engineering B
  18. 2023, Graduate Education (Master's Program) , 1Term, Special Exercises on Mechanical Engineering B
  19. 2023, Graduate Education (Master's Program) , 2Term, Special Exercises on Mechanical Engineering B
  20. 2023, Graduate Education (Master's Program) , Academic Year, Special Study on Mechanical Engineering
  21. 2023, Graduate Education (Master's Program) , Academic Year, Special Study on Mechanical Engineering
  22. 2023, Graduate Education (Master's Program) , 2Term, Applied Fracture Mechanics
  23. 2023, Graduate Education (Master's Program) , 4Term, Mechanical Behavior and Strength of Engineering Materials
  24. 2023, Graduate Education (Doctoral Program) , Academic Year, Special Study on Mechanical Engineering
  25. 2023, Graduate Education (Doctoral Program) , Academic Year, Special Study on Mechanical Engineering

Award of Education

  1. 2000/.1
  2. 1997/.1

Research Activities

Academic Papers

  1. Single-Pass Process of Square Butt Joints without Edge Preparation Using Hot-Wire Gas Metal Arc Welding, metals, 13, 20230524
  2. Bead shape control in high-speed fillet welding using hot-wire GMA laser hybrid welding technology, Welding in the World, 20230210
  3. Strengthening mechanism of high-pressure linear friction welded AA7075-T6 joint, Materials Characterization, 191, 20220710
  4. Microstructure evolution and hardness distribution of linear friction welded AA5052- H34 joint and AA5083-O joint, Journal of Materials Research and Technology, 17, 2419-2430, 20220209
  5. Bead shape control in high-speed fillet welding using hot-wire GMA laser hybrid welding technology, WELDING IN THE WORLD, 67(5), 1259-1266, 202305
  6. Influence of solute Mg and Zener-Hollomon parameter on microstructural evolution of linear-friction-welded Al joints, JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 23, 4334-4345, 2023
  7. Highly Efficient Additive Manufacturing Phenomena of Various Wires using Hot-wire and Diode Laser, Proceedings of IIW2021, 20210707
  8. Study on Kca value of Brittle Crack Arrest Steel Plates for Large Ships, Proceedings of IIW2021, 20210707
  9. Selection of welding conditions for achieving both of high efficiency and low heat input on hot-wire GMAW, Proceedings of IIW2021, 20210707
  10. Optimization of welding conditions for hot-wire CO2 arc welding on heavy-thick butt-joint, Proceedings of IIW2021, 20210707
  11. Strengthening mechanism of high-pressure linear friction welded AA7075-T6 joint, MATERIALS CHARACTERIZATION, 191, 202209
  12. A Study on Brittle Crack Arrest Toughness of Crack Arrestor Steel Plates for Large Ships, Journal of High Pressure Institute of Japan, 60(1), 4-17, 20220226
  13. Estimation of Stress Concentration Factor of Cruciform Welded Joints using Laser Scanning Measurement for Quality and Reliability in Chemical Tanker Construction, Journal of High Pressure Institute of Japan, 59(5), 250-264, 20211028
  14. Additive manufacturing phenomena of various wires using a hot-wire and diode laser, WELDING IN THE WORLD, 66(7), 1315-1327, 20220701
  15. Microstructure evolution and hardness distribution of linear friction welded AA5052-H34 joint and AA5083-O joint, JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 17, 2419-2430, 2022
  16. Optimization of welding conditions for hot-wire GMAW with CO2 shielding on heavy-thick butt joint, WELDING IN THE WORLD, 66(4), 833-844, 202204
  17. Cracking in the stir zones of Mg-alloy friction stir spot welds, JOURNAL OF MATERIALS SCIENCE, 42(18), 7657-7666, 200709
  18. Strain rates and grain growth in Al 5754 and Al 6061 friction stir spot welds, METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 38A(6), 1291-1302, 200706
  19. Local melting and cracking in Al 7075-T6 and Al 2024-T3 friction stir spot welds, SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 12(6), 472-480, 200711
  20. Cracking in dissimilar Mg alloy friction stir spot welds, SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 13(7), 583-592, 200810
  21. Cracking in dissimilar Mg alloy friction stir spot welds, SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 13(7), 583-592, 200810
  22. Precipitation and Cr depletion profiles of Inconel 182 during heat treatments and laser surface melting, JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 209(1), 416-425, 20090101
  23. Precipitation and Cr depletion profiles of Inconel 182 during heat treatments and laser surface melting, JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 209(1), 416-425, 20090101
  24. Experimental investigation of material flow during friction stir spot welding, SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 15(8), 666-670, 201011
  25. Effect of microstructure on liquation cracking during AZ91 friction stir spot welding, SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 15(8), 671-675, 201011
  26. HIGH SPEED AND HIGH MAGNIFICATION IN SITU OBSERVATION OF RESIDUAL LIQUID METAL DURING LASER WELDING PROCESS, ACTA METALLURGICA SINICA, 47(3), 305-310, 20110311
  27. HIGH SPEED AND HIGH MAGNIFICATION IN SITU OBSERVATION OF RESIDUAL LIQUID METAL DURING LASER WELDING PROCESS, ACTA METALLURGICA SINICA, 47(3), 305-310, 20110311
  28. EXPERIMENTAL RESEARCH AND NUMERICAL SIMULATION OF SOLIDIFICATION CRACK DURING LASER WELDING OF RING STRUCTURE, ACTA METALLURGICA SINICA, 47(10), 1241-1245, 20111011
  29. EXPERIMENTAL RESEARCH AND NUMERICAL SIMULATION OF SOLIDIFICATION CRACK DURING LASER WELDING OF RING STRUCTURE, ACTA METALLURGICA SINICA, 47(10), 1241-1245, 20111011
  30. The effect of welding conditions on solidification cracking susceptibility of type 310S stainless steel during laser welding using an in-situ observation technique, WELDING IN THE WORLD, 57(3), 383-390, 201305
  31. Development of a highly efficient hot-wire laser hybrid process for narrow-gap welding-welding phenomena and their adequate conditions, WELDING IN THE WORLD, 57(5), 607-613, 201309
  32. Strength and Reliability of Welded Joint of Material for Hot Dip Galvanizing Bath (Third Report) -Characteristics of Creep Rupture Strength in Liquid Zinc of Welded Joint-, Transactions of The West-Japan Society of Naval Architects, 98, 359-364, 20000401
  33. Influences of Secondary Buckling on the Buckling/Plastic Collapse Behavior of Plates, 347-355, 19950601
  34. Crack Initiation Strength of Structurel Steel Members Having Experienced Large Compressive Strain due to Buckling Deformation (1st Report), 565-573, 19951201
  35. Cpncideration of Fracture Toughness of steel Plate having Surface Layer with Ultra Fine Grain Microstructure, 185-192, 185-192, 19960301
  36. A Study on the Evaluation of Covrosion Fatigue Crack Initiation Life, 91-96, 19970301
  37. Fatigue Strength in Sea Water of Steel Plate having surface Layers with Ultra Fine Grained Microstructure and its Evaluation(Second report), Transactions of The West-Japan Society of Naval Architects, 147-156, 19990301
  38. A Study on Application of Ship Hull Steel Plates at Low Temperature Based on Fracture Toughness, Transactions of The West-Japan Society of Naval Architects, 157-165, 19990301
  39. Fatigne Strergth in Sea Water of Steel Plate haying Surface Layers with Ultra Fine Grain Microstructure and its Evaluation (Third Report), Transactions of The West-Japan Society of Naval Archtects, 249-256, 19990801
  40. Strength and Reliability of welding Joint of Material for Hot Dip Galranizing Bath(First Report)-Characteristic of Elerated Temperature Strength and Liquid retal Embrittlement in Liguid Zinc of Welded Joint-, Transaction of The West-Japan Society of Naval Architects, 269-277, 19990801
  41. A Consrderation on Use of Material Grades for Hull Structural Members Based on Fracture Toughness(Second Report), Transaction of The West-Japan Society of Naval Architects, 257-267, 19990801
  42. Study on Fatigue Strength in Air and Sea Water of Plasma Arc Cut Steel Plate, Transactions of West-Japan Society of Naval Arvhitecs, 343-350, 20000301
  43. Strength and Reliability of Welded Joint of Material for Hot Dip Galranizing Bath(Second Report-Characteristics of Long-time Corrosion in Liguid Zinc of Welded Joint-), Transactions of West-Japan Society of Naval Arvhitecs, 351-358, 20000301
  44. Strength and Reliability of welded Joint of Material for Hot Dip Galranizing Bath (Third Report)- Chara ctenistics of Creep Rupture Strength in Liguid Zinc of Welded Joint-, Transactions of West-Japan Society of Naval Arvhitecs, 359-364, 20000301
  45. Fatigue Strength in Sea Water of Steel Plate having surface Layers with Ultla Fine Grain Microstructure and its Evaluation(Fourth Report), Transactions of The West-Japan Society of Naval Architects, 335-343, 20000801
  46. Study on Fatigue Strength in Air and Sea Water of Plasma Arc Cut Steel Plate(Second Report), Transactions of The West-Japan Society of Naval Architects, 223-231, 20010301
  47. A Study on Unstable Fracture Strength of Welded Joint in Hot Dip Galvanizing Bath, Transactions of The West-Japan Society of Naval Architects, 233-240, 20010301
  48. A Study on Optimum Structural Design of Container Ship using Genetic Algorithms and Convergence of its Solution, Transactions of The West-Japan Society of Naval Architects, 185-194, 20010301
  49. Crack Initiation Strength of Structural Steel Members Having Experienced Large Compressive Strain clue to Buckling Deformation(Fourth Report), Journal of the society of naval architects of japan, 387-394, 20010601
  50. A Study on Optimum Structural Design of Container Ship Using Genetic Algorithms and Convergence of its Solution, Transactions of The West-Japan Society of Naval Architects, 101, 185-194, 20010301
  51. Strength of New-Type Steel Plate Having Surface Layers with Ultrafine Grain Microstructure, 20010601
  52. A New Type VLFS Using Submerged Plates: Sub-Plate VLFS--Part-3 Structural Response and Strength--, 20010601
  53. Study on Strength and Notch Toughness of Structural Steel Members having Experienced Large Conpressive Strain, Transactions of The West-Japan Society of Naval Architects, 327-334, 20000801
  54. A New Type VLFS using Submerged Plates: Sub-Plate VLFS--Part-3 Structural Response and Strength --, Proceedings of the 20th International Conference of Offshore Mechanics and Arctic Engineering, CR-ROM, OSU-5019, 20010601
  55. A Knowledge-Review Oriented PBL -Paper Bicycle Project-, 50(6), 202-210, 20020401
  56. Prediction of Liquation Crack Initiation at HAZ of Laser Weldment Based on Strain Analysis at Elevated Temperature, Proceedings of the International Welding/Joining Conference Korea 2002, 244-249, 20020601
  57. Fatigue Strength of Boxing Fillet Welded Joints for TMCP Type 490 MPa-Class High Tensile Steel Plates, Proceedings of the Fifth (1995) International Offshore and Polar Engineering conference, 75-82, 19950601
  58. A Suggested Method of Ship Hull Plating Fractur Toughness Assessment, Proceedings of the Fifth (1995) International Offshore and Polar Engineering conference, 256-262, 19960501
  59. Concept Study on the Next Generation Student Information System at Hiroshima University - Research and investigation for introducing Study Supporting System -, 455-456, 20040701
  60. Stress Modification by Post Processing Technique based on Characteristics of Finite Element Method, Transactions of The West-Japan Society of Naval Architects, 108, 225-234, 20040801
  61. A Study on Numerical Analysis of Laser Type Welding for Estimating Temperature Distribution and HAZ Shape, Transactions of The West-Japan Society of Naval Architects, 109, 173-184, 20050301
  62. Crack Initiation Strength of Structural Steel Members having Experienced Large Compressive Strain, Proc. OMAE2002, 20020601
  63. Prediction of Liquation Crack Initiation at HAZ of Laser Weldment Based on Three Dimensional Strain Analysis at Elevated Temperature, Proc. LAMP2002, 20020501
  64. Prediction of Liquation Crack Initiation at HAZ of Laser Weldment Based on Strain Analysis at Elevated Temperature, Proc. the International Welding/Joining Conference Korea, 244-249, 20021001
  65. Liquid zinc corrosion of steel welds, Science and Technology of Welding and joining, 7(6), 397-402, 20020401
  66. Developmnt of Structural Steel with Superior Resistance Against Fatigue Crack Growth, Proc. OMAE2004, 20040601
  67. Study on Evaluation Method for Liquation Crack Initiation at HAZ of Laser Weldment, Proc. IIW2004, 20040701
  68. A Study on Numerical Analysis of Laser Weldng for Estimating Temperature Distribution and Bed Shape, Transactions of The West-Japan Society of Naval Architects, 173-184, 20050301
  69. Prediction of liquation Crack Initiation at HAZ of Laser Weldment Based on Strain Analysis at Elevated Temperature, Proceedings of the Seventeenth Asian-Pacific Technical Exchange and Advisory Meeting on Marine Structures, 287-296, 20030401
  70. Thermo-elastic-viscoplastic Analysis for Evaluation of Hot Crack Susceptibility in Laser Welding, Proceedings of TEAM 2006, 20, 337-344, 20061001
  71. Cracking in Mg-alloy Friction Stir Spot Welding, Proceedings of UIIW (University-Industry International Workshop) - Frontiers of Science & Technology of Welding- (Nantes, France), CD-ROM, 20070627
  72. Development of Ultra-High-Speed GTA Welding Process Using Pulse-Heated Hot-Wire, Proceedings of the 60th Annual Assembly of International Institute of Welding (IIW), IIW-XII-1927-07, 20070703
  73. Cracking and Local Melting in Mg-alloy and Al-alloy during Friction Stir Spot Welding, Proceedings of the 60th Annual Assembly of International Institute of Welding (IIW), IIW-III-1429-07, 20070703
  74. Liquid Penetration Induced Cracking in Mg-alloy Spot Welds, Abstract Book of International Welding Joining Conference-Korea 2007, 242-243, 20070510
  75. Development of Evaluation Method for Solidification Cracking Susceptibility of Inconel600/SUS347 Dissimilar Laser Weld Metal by In-situ Obsevation, Abstract Book of International Welding Joining Conference-Korea 2007, 20-21, 20070510
  76. Similar and dissimilar spot welding of Mg alloys, Magnesium Technology in the Global Age, Ed: M.O. Pekguleryuz and L.W.F. Mackenzie, 479-492, 20061001
  77. Suggestion of Prediction Method of Liquation Cracking in HAZ of Laser Weldment of Ni-base Superalloys Using the Three-Dimensional Thermo-Elastic-Plastic Analysis, Proceedings of Inter-University Research Seminar (IURS) of Science and Technology of Welding and Joining (Beijing, China), 247-263, 20050815
  78. Liquid Penetration Induced (LPI) Cracking in AZ91 Friction Stir Spot Welds, Quarterly Journal of The Japan Welding Society, 25(1), 208-214, 20070401
  79. Local melting and cracking in Al 7075-T6 and Al 2024-T3 friction stir spot welds, Science and Technology of Welding and Joining, 12(6), 427-480, 20070801
  80. Mechanism of cracking in AZ91 friction stir spot welds, Science and Technology of Welding and Joining, 12(3), 208-216, 20070401
  81. Eutectic Segregation and Cracking in AZ91 Friction Stir Spot Welds, SAE Paper, SAE-2007-01-1700, 20070401
  82. CRACKING AND LOCAL MELTING IN MG-ALLOY AND AL-ALLOY DURING FRICTION STIR SPOT WELDING, WELDINGINTHEWORLD, 52(9-10), 38-46, 20080901
  83. Study of Evaluation Method for Liquation Crack Initiation in the Haz of a Laser Weldment, WELDINGINTHEWORLD, 49(9-10), 49-57, 20050901
  84. Local melting and tool slippage during friction stir spot welding of Al-alloys, JOURNAL OF MATERIALS SCIENCE, 43(22), 41316, 20080101
  85. Effect of welding parameters on the strain rate and microstructure of friction stir spot welded 2024 aluminum alloy, JOURNAL OF MATERIALS SCIENCE, 42(14), 5589-5601, 20070701
  86. Formation and retention of local melted films in AZ91 friction stir spot welds, JOURNAL OF MATERIALS SCIENCE, 42(24), 9954-9965, 20071201
  87. Bead formation and wire temperature distribution during ULTRA-HIGH-SPEED GTA WELDING using pulse-heated hot-wire, WELDINGINTHEWORLD, 55(3-4), 12-18, 20110301
  88. Bead formation and wire temperature distribution during ULTRA-HIGH-SPEED GTA WELDING using pulse-heated hot-wire, WELDING IN THE WORLD, 55(3-4), 12-18, 20110301
  89. Study on Solidification Cracking of Laser Dissimilar Welded Joints by using in-Situ Observation and Numerical Simulation, WELDINGINTHEWORLD, 54(9-10), R257-R266, 20100901
  90. STUDY ON SOLIDIFICATION CRACKING OF LASER DISSIMILAR WELDED JOINTS BY USING IN-SITU OBSERVATION AND NUMERICAL SIMULATION, WELDING IN THE WORLD, 54(9-10), R257-R266, 20100901
  91. Liquid zinc corrosion of steel welds, SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 7(6), 397-402, 200212
  92. Stress corrosion cracking sealing in overlaying of Inconel 182 by laser surface melting, JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 173(3), 330-336, 20060420
  93. Modeling of precipitation and Cr depletion profiles of Inconel 600 during heat treatments and LSM procedure, JOURNAL OF ALLOYS AND COMPOUNDS, 419(1-2), 118-125, 20060810
  94. Mechanism of cracking in AZ91 friction stir spot welds, SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 12(3), 208-216, 200705
  95. Bead formation and wire temperature distribution during ULTRA-HIGH-SPEED GTA WELDING using pulse-heated hot-wire, WELDING IN THE WORLD, 55(3-4), 12-18, 2011
  96. STUDY ON SOLIDIFICATION CRACKING OF LASER DISSIMILAR WELDED JOINTS BY USING IN-SITU OBSERVATION AND NUMERICAL SIMULATION, WELDING IN THE WORLD, 54(9-10), R257-R266, 2010
  97. Solidification cracking susceptibility of modified 9Cr1Mo steel weld metal during hot-wire laser welding with a narrow gap groove, WELDING IN THE WORLD, 58(4), 469-476, 201407
  98. Development of a Heat Source Model for Narrow-gap Hot-wire Laser Welding, QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 31(4), 82-85, 2013
  99. Development of High Efficient Hot-wire Laser Welding for Narrow Gap Joint, 2013
  100. evelopment of WC Hard-facing Welding Process using Pulse Heated Hot-wire Gas Tungsten Arc Welding System, QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 31(4), 57-60, 2013
  101. Hot-wire Laser Fillet Welding on Steel Plate Coated with Shop Primer, 2013
  102. In-situ Temperature Measurement using Monochrome High-speed Sensors during Laser Welding, QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 31(4), 78-81, 2013
  103. In-situ Temperature Measurement using Two-sensors Camera during Laser Welding,
  104. Material Flow during Dissimilar Friction Stir Spot Welding on Mg alloy,, 2013
  105. Material Flow on Dissimilar Friction Stir Spot Welded Joints of Mg Alloys, QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 31(4), 82-85
  106. In Situ Observation Method for Quantitative Evaluation of Solidification Phenomena and Solidification Cracks during Welding, Materials Science Forum, 782, 3-7, 2014
  107. The Effect of welding conditions on solidification cracking susceptibility of type 310S stainless steel during laser welding using an in-situ observation technique, WELDING IN THE WORLD, 57, 383-390, 201305
  108. Development of a highly efficient hot-wire laser hybrid process for narrow-gap welding?welding phenomena and their adequate conditions, WELDING IN THE WORLD, 57, 607-613, 201305
  109. Prediction of occurrence of solidification cracking of heat-resistant magnesium alloys during die-casting, Journal of Japan Institute of Light Metals, 63(1), 14-20, 2013
  110. Evaluation of solidification cracking susceptibility of heat-resistant magnesium alloy produced by semi-solid injection molding process, Journal of Japan Institute of Light Metals, 63(6), 223-228, 2013
  111. Evaluation of solidification cracking susceptibilities of heat-resistant magnesium alloys during die-casting using in-situ observation method, Journal of Japan Institute of Light Metals, 63(1), 8-13, 2013
  112. Hot-wire Laser Welding Process Using Laser Diode for Large-Diameter Pipe with Narrow Gap Joint, QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 33(2), 107-110, 2015
  113. Welding Phenomena during Vertical Welding on Thick Steel Plate using Hot-wire Laser Welding Method, QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 33(2), 143-147, 2015
  114. Investigation of Evaluation Method for Hot Cracking Susceptibility of 310S Stainless Steel during Laser Welding using Trans-Varestraint Test, QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 33(2), 39-43, 2015
  115. In-situ Temperature Measurement using a Multi-sensor Camera during Laser Welding, QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 33(2), 93-97, 2015
  116. Weld Defect Prevention for Fillet Welded Joints on Steel Plates Coated with Shop Primer using Hot-wire Laser Welding, QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 33(2), 98-101, 2015
  117. Oblique laser irradiation technique for vertical welding of thick steel plates employing hot-wire laser welding, QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 33(4), 326-331, 2015
  118. Crack repair welding by CMT brazing using low melting point filler wire for long-term used steam turbine cases of Cr-Mo-V cast steels, MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 666, 11-18, 20160601
  119. New measurement technique of ductility curve for ductility-dip cracking susceptibility in Alloy 690 welds, MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 672, 59-64, 20160830
  120. Evaluation of Solidification Cracking Susceptibility for Austenitic Stainless Steel during Laser Trans-Varestraint Test Using Two-dimensional Temperature Measurement, ISIJ INTERNATIONAL, 56(11), 2022-2028, 20161004
  121. A Study on Stress Concentration Factor on Weld Toes of Cruciform Welded Joints by FEM Analysis, Journal of the Japan Society of Naval Architects and Ocean Engineers, 309-315, 20161201
  122. Heat Transfer Performance of Sodium Encapsulating Engine Valves, Advanced Experimental Mechanics, 1, 69-73, 20160405
  123. Hot-wire Laser Brazing Technology for Steel / Aluminum Alloy Dissimilar Joint, 35(2), 155-159, 20171201
  124. Elucidation of Grain Refinement Mechanism in Weld Metal of Type 310S Stainless Steel- Grain Refinement in Weld Metal by Hot-wire GTAW Process -, 35(1), 36-44, 20170415
  125. Effect of Wire Feeding Conditions on Grain Refinement in Weld Metal of Type 310S Stainless Steel- Grain Refinement in Weld Metal by Hot-wire GTAW Process -, 35(1), 45-50, 20170420
  126. Relationship Between Grain Refinement in Weld Metal of Type 310S Stainless Steel and Welding Conditions and Mechanical Properties- Grain Refinement in Weld Metal by Hot-wire GTAW Process -, 35(1), 6-12, 20170410
  127. Effect of Heating Rate on Grain Refinement in Weld Metal of Type 430 Stainless Steel- Grain Refinement in Weld Metal by Hot-wire GTAW Process -, 35(1), 51-56, 20170510
  128. A Study on Stress Concentration Factor on Weld Toes of Cruciform Welded Joints with Misalignment by FEM Analysis− Relation between stress concentration factor and relative positional difference of weld toes −, 26, 145-155, 20171201
  129. A Study on the Fatigue Strength of Welded Joints of Duplex Stainless-Clad Steel Plates for Application in Chemical Tankers, Welding Letters, 35(4), 1-3, 20171023
  130. Investigation of hot-wire laser welding conditions for lap fillet joint of high-tensile steel sheets, 88, 9-12, 20171001
  131. Improvement of fatigue strength of fillet welded lap joint for high-tensile steel sheets using hot-wire laser welding method, 257-260, 20171205
  132. A Study on Fatigue Strength of Welded Joints for Du- plex Stainless Steel Plate and Austenitic Stainless− Clad Steel Plate, JHPI, 55(3), 112-120, 20170525
  133. Sheet gap control by laser preheating before laser welding on lap joint of galvannealed steel sheets and its effect on weldability, 36(3), 199-205, 20180901
  134. Development of High-efficiency Welding Technology for Thick steel Plate using Hot-wire CO2 Arc Welding Method, Proceedings of The 8th Asia-Pacific IIW International Congress, 20190320
  135. Development of Vertical Welding Process for Heavy-thick Steel Plate using Hot-wire Laser Welding, Proceedings of The 8th Asia-Pacific IIW International Congress, 20190320
  136. A Study on Fracture Toughness of Heavy−Thick−Steel Plates and Its Welded Joints by Small Size Tension Test Specimen, JHPI, 57(4), 201-211, 20190828
  137. Fracture Strength Evaluation of Steel / Aluminum Alloy Lap Fillet Joint made by Hot-wire Laser Brazing, Proceedings of the JAAA2018, 20181127
  138. Hot-wire Laser Welding for Lap Fillet Joint of High-strength Galvanized Steel Sheets, Proceedings of the JAAA2018, 20181127
  139. Melting by Reflected Laser Beam during Vertical Welding via Hot-Wire Laser Welding, Quarterly Journal of the Japan Welding Society, 37(4), 208-214, 20191121
  140. Optimization of Laser-Irradiating Conditions for Vertical Welding on Thick Steel Plate using Hot-Wire Laser-Welding Method, Quarterly Journal of the Japan Welding Society, 37(4), 187-192, 20191024
  141. A Study on Fracture Toughness of Heavy-Thick-Steel Plates and Its Welded Joints by Small Size Tension Test Specimen, Journal of High Pressure Institute of Japan, 57(4), 201-211, 20190828
  142. A Study on Operation and Management Control of Hot Dip Galvanizing Bath Made of Steel Considering Unstable Fracture Prevention, JHPI, 58(6), 338-335, 20201223
  143. High-Efficiency and Low-Heat-Input CO2 Arc-Welding Technology for Butt Joint of Thick Steel Plate Using Hot Wire, Quarterly Journal of The Japan Welding Society, 38(3), 164-170, 20201008
  144. Evaluation of Butt Joint Produced by a Hot-Wire CO2 Arc Welding Method, Quarterly Jounal of The Japan Welding Society, 39(1), 96-103, 20210322
  145. A Study on Operation and Management Control of Hot Dip Galvanizing Bath Made of Steel Considering Corrosion and Wear Prevention, Journal of High Pressure Institute of Japan, 59(1), 24-35, 20210303
  146. Derivation of Appropriate Conditions for Additive Manufacturing Technology Using Hot-Wire Laser Method, Materials Proceedings, 3(1), 20210218
  147. Derivation of Proper Hot-wire Heating Current using Various Wires, Preprints of the National Meeting of JWS, 108, 18-19, 20210310
  148. High-speed Hot-wire Laser Brazing for Dissimilar Flare Joint of Steel/Aluminum Alloy, Preprints of the National Meeting of JWS, 107, 252-253, 20200827
  149. Strength Evaluation for Dissimilar Flare Joint of Steel / Aluminum Alloy, Preprints of the National Meeting of JWS, 108, 172-173, 20210310
  150. Bead Shape Effect on Solidification Cracking during Hot-wire Laser Welding on Narrow-gap Joint of Ni-base Alloy, Preprints of the National Meeting of JWS, 107, 86-87, 20200827
  151. Derivation of Proper Welding Conditions on Hot-Wire Laser Narrow-Gap Welding, Preprints of the National Meeting of JWS, 107, 32-33, 20200827
  152. Development of Fillet Welding Process for 9%Ni Steel using Hot-Wire Laser Welding Method, Preprints of the National Meeting of JWS, 107, 282-283, 20200827
  153. Derivation of appropriate conditions for Additive Manufacturing technology using hot hotwire laser method, Preprints of the National Meeting of JWS, 107, 212-213, 20200827
  154. Study on Solidification Cracking Susceptibility of Austenitic Alloys During Laser Welding, RARE METAL MATERIALS AND ENGINEERING, 50(7), 2435-2446, 20210701
  155. Microstructure evolution and mechanical properties of 308L stainless steel coatings fabricated by laser hot wire cladding, MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 824, 20210908
  156. Research on interface characteristics of 308L stainless steel coatings manufactured by laser hot wire cladding, SURFACE & COATINGS TECHNOLOGY, 427, 20211215
  157. Optimization of Process Conditions for Additive Manufacturing Technology Combining High-Power Diode Laser and Hot Wire, METALS, 11(10), 20211004
  158. Effect of applied pressure on microstructure and mechanical properties of linear friction welded AA1050-H24 and AA5052-H34 joints, SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 27(2), 92-102, 20220217

Awards

  1. 1993, Student award, The Society of Naval Architects of Japan
  2. 2003/04, Presentation award 2003, The Japan Welding Society, レーザ溶接部の3次元熱弾塑性ひずみ解析手法の検討ーNi基耐熱超合金レーザ溶接部の高温割れ発生評価法に関する研究(第1報)ー
  3. 2006/05, Outstanding young researcher award 2006, The Technical Commission on Welding Metallurgy, The Japan Welding Society, 3次元高温ひずみ解析を用いたNi基耐熱超合金レーザ溶接部の液化割れ発生評価法に関する研究
  4. 2007/05, Best Paper Award, IWJC-Korea 2007
  5. 2008/04/09, Best paper award for young researcher, The Japan Welding Society, マグネシウム合金AZ91摩擦撹拌スポット溶接部における液膜侵入誘起割れ(LPI Cracking)
  6. 2008/06/16, Presentation award, The Technical Commission on Joining and Materials Processing for Light Structure, The Japan Welding Society, 摩擦撹拌点接合(FSSW)時の局部溶融・割れ発生現象
  7. 2008/11/18, Komatsu Award (Best Poster Award), The Japan Welding Society, Melting Phenomenon during Ultra-High-Speed GTA Welding Method using Pulse-heated Hot-wire
  8. 2010/08/04, Young researcher award for welding physics and technology, The Technical Commission on Welding Process, The Japan Welding Society, パルス通電加熱ホットワイヤを用いた高能率TIG溶接技術の開発
  9. 2010/11/11, Best Paper Award, Visual-JW201, Effect of grain size on solidification cracking susceptibility of type 347 stainless steel during laser welding
  10. 2010/11/17, Presentation award 2010, 日本船舶海洋工学会 西部支部, ホットワイヤ・レーザ溶接法を用いた高品質すみ肉溶接技術の開発
  11. 2011/11/15, Professor Koichi Masubuchi Award, American Welding Society, 革新的な溶接法の研究・開発,溶接割れに関する研究,溶接構造物の強度・安全性評価・向上に関する研究など,幅広く溶接・接合技術の研究・開発に貢献
  12. 2013/06/11, Light Metal Paper Prize, Japan Light Metal Welding Association, AZ31マグネシウム合金の摩擦攪拌点接合時の塑性流動現象および継手強度に及ぼすツール形状の影響
  13. 2014/04/23, Promotion of Welding Research Award, The Japan Welding Society
  14. 2015/08/04, Young researcher award for welding physics and technology, The Technical Commission on Welding Process, The Japan Welding Society, ホットワイヤ・レーザ溶接法による厚鋼板立向き溶接プロセスの開発

Patented

  1. Patent, JP5600837, 2014/08/29
  2. Patent, JP5600838, 2014/08/29
  3. Patent, 5600837, 2014/08/29
  4. Patent, 5600838, 2014/08/29

External Funds

Acceptance Results of Competitive Funds

  1. Strategic Core Technology Advancement Program, 2019/07/08, 2020/02/28
  2. KAKENHI(Grant-in-Aid for Scientific Research (B)), 2018, 2020
  3. (空白), 2017/12/01, 2018/11/30
  4. -, 2017/12/01, 2018/11/30
  5. Strategic Core Technology Advancement Program, 2017/04/03, 2018/02/28
  6. Strategic Core Technology Advancement Program, 2016/04/01, 2017/02/28
  7. Strategic Core Technology Advancement Program, 2015/09/10, 2016/02/29
  8. KAKENHI, 2015, 2017
  9. KAKENHI, Development of High-tensile Strength Steel Welding Method for Shipbuilding using Hot-wire Laser Welding Technology, 2010, 2011
  10. KAKENHI, 2002, 2003
  11. KAKENHI, Study on analysis model for simulating hot cracking phenomenon at heat affected zone of weldment, 2001, 2003
  12. KAKENHI, 1998, 1999