Researcher Database

OHARA, Masahiro

FacultyGraduate School of Science and Engineering Materials Science and Biotechnology
PositionProfessor
Last Updated :2019/07/17

Researcher Profile and Settings

Profile and Settings

Name

  • Name

    OHARA, Masahiro

Education, Etc.

Degree

  • Ph.D.

Research Activities

Research Areas, Etc.

Research Areas

  • Material engineering, Material processing/Microstructural control engineering, Welding and Joining

Book, papers, etc

Published Papers

  • Improvement in Stretch Flange Ability of High-Tensile-Strength Steel Sheets by Piercing under Tension Using Humped Bottom Punch, TAKAHASHI Yuzo, HORIOKA Satoshi, KAWANO Osamu, OHARA Masahiro, USHIODA Kohsaku, Journal of the JSTP, 塑性と加工, 53, 617, 569, 573, 2012/06, 00381586, 10.9773/sosei.53.569
  • Analysis of Governing Factors of Stretch Flange-Ability of Hot-Rolled High Strength Steels on the Basis of Fracture Mechanics, Takahashi Yuzo, Kawano Osamu, Tanaka Yoichi, Ohara Masahiro, Ushioda Kohsaku, Tetsu-to-Hagane, 鉄と鋼, 98, 7, 378, 387, 2012, 1341-688X, 10.2355/tetsutohagane.98.378
  • High-Power CO_2 Laser Welding Characteristies of Hot Steel Samples, KIDO Motoi, HAMADA Naoya, SUGIHASHI Atsushi, YAMAMOTO Hiroyuki, OHARA Masahiro, NISHIBAYASHI Shigeru, MINAMIDA Katsuhiro, KIKUMA Toshio, The Review of laser engineering, レーザー研究, 29, 5, 318, 323, 2001/05, 03870200, 10.2184/lsj.29.318
  • Porosity Formation in CO_2 Laser Welding of Steel Sheets, MIYAZAKI Yasunobu, FURUSAKO Seiji, OHARA Masahiro, quarterly journal of the Japan Welding Society, 溶接学会論文集 : quarterly journal of the Japan Welding Society, 19, 2, 241, 251, 2001/05, 02884771, 10.2207/qjjws.19.241
  • Porosity Formation in CO2 Laser Welding of Steel Sheets., MIYAZAKI Yasunobu, FURUSAKO Seiji, OHARA Masahiro, QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 溶接学会論文集, 19, 2, 241, 251, 2001, 10.2207/qjjws.19.241
  • High-Power CO2 Laser Welding Characteristics of Hot Steel Samples., KIDO Motoi, HAMADA Naoya, SUGIHASHI Atsushi, YAMAMOTO Hiroyuki, OHARA Masahiro, NISHIBAYASHI Sigeru, MINAMIDA Katsuhiro, KIKUMA Toshio, The Review of Laser Engineering, レーザー研究, 29, 5, 318, 323, 2001, 10.2184/lsj.29.318
  • TOUGHNESS IMPROVEMENT OF ELECTRON BEAM WELDS IN STEELS (IMPROVEMENT OF WELD MICROSTRUCTURE AT VERY LOW OXYGEN LEVELS), OHARA Masahiro, WALLACH E. R., Welding in the World, 44, 6, 1, 11, 2000
  • Development of High Power Hybrid Plasma Spraying, HAMATANI Hideki, OHARA Masahiro, FUJI Masao, 日本金屬學會誌, 日本金屬學會誌, 63, 1, 135, 143, 1999/01, 00214876, 10.2320/jinstmet1952.63.1_135
  • 10, 3, p118, 125, 1984/05, 03871096
  • Study on High Speed Submerged Arc Welding (Repart 2) : Effect of Arc Heat Source Shape on the Occurrence of Undercutting (Papers Submitted to National Meeting Autumn 1983), OHARA Masahiro, FUJITA Haruo, HASEBA Sumichika, NISHI Takeshi, quarterly journal of the Japan Welding Society, 溶接学会論文集 : quarterly journal of the Japan Welding Society, 1, 2, 31, 36, 1983/08, 02884771, 10.2207/qjjws.1.133
  • Study on High Speed Submerged Arc Welding (Report 1), Nishi Takeshi, Fujita Haruo, Haseba Sumichika, Ohara Masahiro, Journal of the Japan Welding Society, 溶接学会誌, 51, 8, 686, 692, 1982/08, 00214787, 10.2207/qjjws1943.51.686

Conference Activities & Talks

  • Dissimilar material joining between galvanized steel and thermoplastic resin by resistance spot welding, Shohei SHIMIZU、ITOH Yosuke、 OHARA Masahiro, 2018/03 09
  • 2017/09 12
  • 2017/03 09
  • Microstructures of arc weld metal containing low oxygenin HSLA steels, OHARA Masahiro, CHIBA Kouta, KOREKAWA Akihiro, 2016/04 14
  • Weld shape control low oxygen atmosphere GMA welding at high welding current, OHARA Masahiro, SATO Masahiro, YAMADA shintarou, 2016/04 13
  • 2016/03 08
  • 2015/10 06
  • Improvement of weld shape in CO2 gas arc welding by power moduration, MURAOKA Noriyuki, OHARA Masahiro, KUTUNA Motohiro, 2015/04 24
  • Arc phenomena of GMA welding in pure Ar shielding gas, SATO Masahiro, OHARA Masahiro, YONEMURA Takashi, 2015/04 22
  • Arc stabilization in low oxygen GMA welding by local pulsed gas addition , HARADA Yuuya, OHARA Masahiro, MOTOYAMA Teruaki, 2015/04 22
  • Influence of Shield Gas Composition on Arc Welding Phenomena and Mechanical Properties in GMA Welding, OHARA Masahiro, FUJITA Shunsuke, YAMASAKI Tomoya, TACHIBANA Shinya, SENOKUCHI Hiroaki, Preprints of the National Meeting of JWS, 2013/03 21, 鋼のGAM溶接において、シールドガス中の炭酸ガス濃度を変化させ、陰極点の挙動・溶滴移行などの溶接現象への影響と溶接金属の酸素含有量、継手特性などへの影響を調べた結果を報告する、
  • Crack propagation on sheared edge in hole expansion test of hot-rolled high tensile strength steel sheets : Analysis of dominant factor of hole expansion ratio of hot-rolled high tensile strength steel sheets-1, TAKAHASHI Yuzo, 材料とプロセス : 日本鉄鋼協会講演論文集 = Current advances in materials and processes : report of the ISIJ meeting, 2005/03 01
  • The Effect of Welding Conditions on Nitrogen dissolution in Molten Metal : Study on Porosity Formation in CO2 Laser Welding of Steel Sheet(Part3), Miyazaki Yasunobu, Furusako Seiji, Tanaka Takashi, Ohara Masahiro, Pre-Prints of the National Meeting of JWS, 2001/03 19
  • itrogen Solution and Porosity Formation in molten metal from Back Side : Study on Porosity Formation in CO2 Laser Welding of Steel Sheet(Part2), Miyazak Yasubonu, Furusak Seiji, Ohara Masahiro, Pre-Prints of the National Meeting of JWS, 2000/03 13
  • Nitrogen Solution and Porosity Formation in Molten Metal in CO_2 Laser Weldimg : Study on Porosity Formation in CO_2 Laser Welding of Steel Sheet(Part1), Miyazaki Yasubonu, Furusak Seiji, Ohara Masahiro, Pre-Prints of the National Meeting of JWS, 2000/03 13
  • Crush absorption property of a hat-type component made by laser welding, Furusako S., Uenishi A., Miyazaki Y., Ohara M., Pre-Prints of the National Meeting of JWS, 2000/03 13
  • Study on the fusing treatment of sprayed coating by using Electoronbeam., Hamatani Hideki, Miyazaki Yasunobu, Ohara Masahiro, Pre-Prints of the National Meeting of JWS, 1998/03 20
  • The effect of welding power source for spot weldablity. : A study of spot welding of Aluminum alloy sheets (Report-1), Sakiyama Tatsuya, Takahashi Yasuo, Ohara Masahiro, Pre-Prints of the National Meeting of JWS, 1995/03 12
  • Laser Welding of Steel Sheet (Report II) : Effect of Joint fit-up on the Formability of Laser Welded Steel Sheet, MIYAZAKI Yasunobu, OHARA Masahiro, SAITO Tohru, Pre-Prints of the National Meeting of JWS, 1993/03 15
  • Laser Welding of Steel Sheet (Report I) : Formability of Laser Welded Steel Sheets, MIYAZAKI Yasunobu, OHARA Masahiro, SAITO Tohru, Pre-Prints of the National Meeting of JWS, 1993/03 15
  • Development of Electron Beam Welding Technology in Metal Supported Catalysts, IWAMI Hiroshi, SAITO Tohru, OHARA Masahiro, TANAKA Takashi, ISHIKAWA Yasushi, Pre-Prints of the National Meeting of JWS, 1993/03 15
  • Driving Force of Convection in Weld Pool in TIG Weld of Nonoriented Electrical Steel Sheets. Study on the Welding Bead Width of Nonoriented Electrical Steel Sheets-2., 黒崎洋介, 塩崎守雄, 河野六郎, 宮崎康信, 小原昌弘, 材料とプロセス, 1992/03
  • Weld Defects observed in Upset Welding. Study on Upset Welding Process-2., 宮崎康信, 小原昌弘, 斉藤亨, 材料とプロセス, 1991/09
  • An In-situ Observation Technique for Transient Liquid Phase Bonding Process : A fundamental study on Transient Liquid Phase Bonding of Super-alloy (Report-1), Ohara Masahiro, Saitoh Tohru, Pre-Prints of the National Meeting of JWS, 1990/03 04
  • Development of pressure vessel steels suitable for EBW. Report 1. Improvement of EB weld metal microstructure in steels., 小原昌弘, 本間弘之, 材料とプロセス, 1988/03
  • 1987/09 12
  • On micro structure and toughness of electron beam welded metals of steels. 2. On micro structure refinement of electron beam welded metals., 小原昌弘, 本間弘之, 溶接学会全国大会講演概要, 1987/09 12
  • 1987/03 15
  • On electron beam welded metal structure and toughness of steels., 小原昌弘, WALLACH E R, 溶接学会全国大会講演概要, 1987/03 15
  • 1978/03 04
  • 1976/10 04

Misc

  • Microstructure and Hardness of Laser Welded Steel Sheets, OHARA Masahiro, MIYAZAKI Yasunobu, Journal of the Japan Welding Society, 社団法人溶接学会, 溶接学会誌, 68, 6, 466, 469, 1999/09, 0021-4787|1883-7204, 10.2207/qjjws1943.68.466, http://ci.nii.ac.jp/naid/110003397405
  • Microstructure and hardness of laser welded steel sheets., Ohara Masahiro, Miyazaki Yasumobu, Pre-Prints of the National Meeting of JWS, 社団法人溶接学会, 溶接学会全国大会講演概要, 62, "F, 9"-"F-12", 1998/03, http://ci.nii.ac.jp/naid/110003429117
  • 38, 432, 45, 51, 1997/01, 00381586, http://ci.nii.ac.jp/naid/10001842123
  • Weldability of coated steel sheets., Ohara Masahiro, Saito Tohru, QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, JAPAN WELDING SOCIETY, 溶接学会誌, 63, 4, 277, 282, 1994, 0021-4787|1883-7204, 10.2207/qjjws1943.63.277, http://ci.nii.ac.jp/naid/130003933743
  • Weldability of coated steel sheets, Ohara Masahiro, Saito Tohru, Journal of the Japan Welding Society, 社団法人溶接学会, 溶接学会誌, 63, 4, 277, 282, 1994/06, 0021-4787|1883-7204, 10.2207/qjjws1943.63.277, http://ci.nii.ac.jp/naid/110003395981
  • 85, 1, 175, 178, 2016, 0021-4787, http://ci.nii.ac.jp/naid/130005143697

愛媛大学教員活動実績

教育活動(B)

論文審査(B10)

  • 2017, 3, 3


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