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J-GLOBAL ID：202001010190363335   Update date: Sep. 23, 2024

Ohsawa Naoki

オオサワ ナオキ | Ohsawa Naoki
Affiliation and department：
大阪大学 大学院工学研究科

About 大阪大学 大学院工学研究科


Job title： 教授
Homepage URL  (1)： http://www.naoe.eng.osaka-u.ac.jp/naoe/naoe2/naoe2.html
Research theme for competitive and other funds  (32)：
  • 2024 - 2027 Development of Stability Assessment Method for HFMI Fatigue Improvement Effect under Ocean Wave Random Loading
  • 2019 - 2022 Study on the effect of recurrence rust generated from water blast on the coating film performance.
  • 2019 - 2022 Advancement of Evaluation Technology for Structural Integrity of Corroded Seawater Tanks of Ships and Offshore Structures
  • 2016 - 2019 Development of full-automatic line heating system
  • 2016 - 2019 Development of Fatigue Assessment Method for Welded Joints subject to Intermittently Hull Vibration Superimposed Wave Loadings
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Papers (181)：
  • Yukihide Yoshihara, Naoki Osawa, Hidekazu Murakawa, Peiyuan Dai. Study on the estimation method for the mean stress effect on the fatigue strength of welded joints with various failure modes and joint types. Welding in the World. 2024
  • Zwe Letyar Htut, Naoki Osawa, Satoyuki Tanaka, Masahiro Toyosada. Efficient technique for evaluation of three-dimensional elastic-plastic fracture mechanics parameters based on equivalent distributed stress concept. Theoretical and Applied Fracture Mechanics. 2024. 131. 104357-104357
  • Masahiko Fujikubo, Tetsuo Okada, Hideaki Murayama, Hidetaka Houtani, Naoki Osawa, Kazuhiro Iijima, Kunihiro Hamada, Kimihiro Toh, Masayoshi Oka, Shinichi Hirakawa, et al. A digital twin for ship structures-R&D project in Japan. Data-Centric Engineering. 2024. 5
  • Peiyuan Dai, Naoki Osawa, Sherif Rashed, Donghui Ma, Jun Okada, Masahito Honnami. Local MIL-HDBK-5D equivalent stress based fatigue assessment of the gusset welded joint improved by Portable Pneumatic Needle-Peening treatment. International Journal of Fatigue. 2023. 177. 107913-107913
  • Takaaki Takeuchi, Naoki Osawa, Akira Tatsumi, Takumi Inoue, Shinichi Hirakawa, Noriaki Seki, Tomomi Yoshida, Rei Miratsu, Shingo Ikeda. Fatigue assessment of ship structures based on equivalent wave probability (EWP) concept (1st report): Proposal of EWP concept and its verification by 8600TEU container ship's onboard hull monitoring. Marine Structures. 2023. 91. 103476-103476
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MISC (12)：
  • 岡田 公一, 大沢 直樹, 麻 寧緒, 堤 成一郎, 村川 英一, 平岡 和雄, 松崎 拓也, 志賀 千晃, 矢島 浩. 低変態温度溶接材料による疲労寿命延伸効果と溶接金属の破壊靭性に関する一考察-A Study on Fatigue Life Improvement of Welded Joint and Fracture Toughness of Weld Metal Using Low Transformation Temperature Welding Material. 日本船舶海洋工学会講演会論文集 Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers. 2018. 26. 245-249
  • Study on the effectiveness of engineering SIF estimation formula for surface crack propagation analysis in tubular welded joint. 2016. 22. 453-456
  • Study on the preciseness of higher-order initial strain integration for local heating deformation shell FE analysis. 2016. 22. 489-492
  • 志賀千晃, 平岡和雄, 村川英一, 大沢直樹, 堤成一郎, 矢島浩, 谷野忠和. 溶接によるものづくりの革新 低変態温度溶接材料を用いた伸長ビード溶接処理による溶接部疲労特性の向上. 溶接技術. 2016. 64. 1
  • Study on Equivalent Distributed Stress Determination Technique which takes into account SIF Convergence for Infinitesimally Short Cracks. 2015. 21. 381-384
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Patents (1)：
  • 温度分布履歴推定方法
Books (11)：
  • Ship production system
    Seizando 2024 ISBN:9784425715169
  • Welding Deformation and Residual Stress Prevention Second Edition
    Welding Deformation and Residual Stress Prevention 2022 ISBN:9780323886659
  • 材料力学 : 構造強度設計の基礎
    朝倉書店 2021 ISBN:9784254231502
  • Fundamentals of Ship Strength Analysis - Part 2 Design load, Local strength and Hull girder ultimate strength -
    The Japan Society of Naval Architects and Ocean Engineers 2017 ISBN:9784425714964
  • Fundamentals of Ship Strength Analysis - Part 1 Structure and Global Strength -
    The Japan Society of Naval Architects and Ocean Engineers 2016
ｍore...
Education (2)：
  • - 1988 Osaka University Graduate School, Division of Engineering
  • - 1984 Osaka University Faculty of Engineering
Professional career (1)：
  • 博士(工学) (大阪大学)
Work history (5)：
  • 2005/04/01 - 現在 Osaka University Graduate School of Engineering Division of Global Architecture Professor
  • 1998/04/01 - 2005/03/31 Osaka University Graduate School of Engineering Division of Global Architecture Associate Professor
  • 1997/04 - 2005/03 大阪大学助教授
  • 1993/04 - 1997/03 大阪大学助手
  • 1988/04 - 1993/03 運輸省船舶技術研究所研究官
Awards (10)：
  • 2024/05 - 日本船舶海洋工学会 日本船舶海洋工学会賞(著書・調査・開発・発明等) 船殻局部構造の疲労寿命延伸溶接技術の開発と修繕現場での実用化
  • 2023/05 - 日本船舶海洋工学会 日本船舶海洋工学会賞(論文賞) 継手形状・破壊形態によらない溶接疲労平均応力影響評価法に関する一考察
  • 2021/01 - 日本高圧力技術協会 科学技術振興賞 低変態温度溶接材料を用いた伸長ビード溶接による疲労寿命延伸効果に関する一考察
  • 2019/04 - 日本溶接学会 業績賞
  • 2015/06 - OMAE Division, American Society of Mechanical Engineers OMAE2014 Structures, Safety and Reliability Symposium Best Paper Award Experimental Study on High Frequency Effect on Fatigue Strength of Welded Joints by Using Plate-Bending-Vibration Type Fatigue Testing Machines
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Association Membership(s) (5)：
溶接学会 ,  Japanese Society of Steel Construction ,  The Japan Welding Engineering Society ,  日本機械学会 ,  日本船舶海洋工学会
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