Yoshinaka Fumiyoshi

Research field (1)： Machine materials and mechanics

Research theme for competitive and other funds (4)：

2020 - 2023 大地震を模擬した高速ひずみ速度の極低サイクル繰り返し変形による疲労損傷の解明
2019 - 2023 Substantiative research on the repeating contact model for the formation mechanism of granular region in subsurface fracture
2019 - 2023 疲労損傷のマルチスケール的観察が結びつける転位-塑性変形-き裂関係
2016 - 2018 Ti-6Al-4Vの超高サイクル疲労における内部疲労き裂発生・進展機構の解明

Papers (36)：

Houichi Kitano, Tomoya Nagira, Fumiyoshi Yoshinaka, Takahiro Sawaguchi, Takayuki Yamashita, Yasuhiro Aoki, Hidetoshi Fujii. Development of a method to evaluate strain in weld solidification using in-situ observations with high-brightness synchrotron X-rays. Science and Technology of Advanced Materials: Methods. 2024. 4. 1
Tomoya Nagira, Houichi Kitano, Takashi Kimura, Fumiyoshi Yoshinaka, Susumu Takamori, Takahiro Sawaguchi, Takayuki Yamashita, Yasuhiro Aoki, Hidetoshi Fujii, Akihisa Takeuchi, et al. In-situ observation of solidification behaviors of Fe-Mn-Cr-Ni-Si alloy during TIG melt-run welding using synchrotron radiation X-ray. Materials Characterization. 2024. 214. 114093
Fumiyoshi Yoshinaka, Yusuke Tsutsumi, Tomoya Nagira, Susumu Takamori, Satoshi Emura, Takahiro Sawaguchi, Hideki Katayama, Terumi Nakamura, Yasuhiko Inoue, Susumu Motomura, et al. Effects of the Cr and Ni Concentrations on the Fatigue and Corrosion Resistances of Fe-Mn-Cr-Ni-Si Alloys for Seismic Damping Applications. ISIJ International. 2024. 64. 7. 1197-1205
Tomoya Nagira, Terumi Nakamura, Fumiyoshi Yoshinaka, Takahiro Sawaguchi, Yasuhiko Inoue. Microstructure and mechanical properties of gas metal arc-welded Fe-Mn-Si seismic damping alloy. ISIJ International. 2024
Fumiyoshi Yoshinaka, Takahiro Sawaguchi, Susumu Takamori, Satoshi Emura, Yasuhiko Inoue. Two-fold improvement of low cycle fatigue resistance of steel by bidirectional transformation-induced plasticity. INTERNATIONAL JOURNAL OF FATIGUE. 2023. 171

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MISC (5)：

澤口孝宏, ニクリンイリヤ, 吉中奎貴. γオーステナイト/εマルテンサイト二相変形組織の結晶幾何学. 金属. 2019. 89. 1. 5-13
吉中奎貴, 中村孝. 放射光X線CTによるTi-6Al-4Vにおける超高サイクル疲労過程の観察. チタン. 2019. 67. 184-188
Yoshinaka Fumiyoshi, Nakamura Takashi, Shiozawa Daiki, Nakai Yoshikazu, Uesugi Kentaro. OS4-13 Observation of Internal Small Fatigue Cracks in Ti-6Al-4V by Using Synchrotron Radiation Micro-computed Tomography Imaging at SPring-8(3D/4D image-based analyses and simulations 4,OS4 3D/4D image-based analyses and simulations,MEASUREMENT METHODS). Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics. 2015. 2015. 14. 55-55
YOSHINAKA Fumiyoshi, NAKAMURA Takashi, OGUMA Hiroyuki. OS2104 The Effects of Vacuum Environment on Fatigue Fracture Surfaces of High Strength Steel. 2014. 2014. "OS2104-1"-"OS2104-3"
YOSHINAKA Fumiyoshi, NAKAMURA Takashi, OGUMA Hiroyuki. 106 Effects of Vacuum Environment on Fatigue Properties of SNCM439. 2013. 2013. 52. 11-12

Lectures and oral presentations (31)：

Bi-directional TRIPを活用した低サイクル疲労寿命の向上
(第35回疲労シンポジウム 2022)
Fe-15Mn-10Cr-8Ni-4Si合金による極低サイクル疲労の研究
(第35回疲労シンポジウム 2022)
制振ダンパー用Fe-Mn-Si合金の極低サイクル疲労破面
(第17回フラクトグラフィシンポジウム 2022)
In situ observation of solidification mode of Fe-Mn-Si alloy during TIG spot welding using synchrotron X-ray
(Visual-JW 2022 (The 6th International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation) 2022)
凝固割れ感受性を考慮した鋼材ダンパー用耐疲労合金の開発
(日本機械学会2022年度年次大会 2022)

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Awards (5)：

2022/06 - The 7th International Conference on Advanced Steels (ICAS2022) Poster Award Enhanced plastic fatigue durability of Fe-Mn-Cr-Ni-Si bidirectional-TRIP steel
2019/05 - 日本材料学会日本材料学会第68期学術講演会日本材料学会優秀講演発表賞 Fe-15Mn-10Cr-8Ni-4Siの疲労破面直下組織の結晶学的解析
2017/10 - 日本材料学会第3回材料WEEK 材料シンポジウム若手学生研究発表会優秀講演賞高輝度放射光CTによるチタン合金内部の疲労き裂・結晶粒の可視化
2017/07 - DVM-German Association for Materials Research and Testing e. V. DVM-Junior Prize at VHCF7
2015/04 - 公益社団法人日本材料学会日本材料学会第32回疲労シンポジウム優秀研究発表賞

Association Membership(s) (3)：

THE SOCIETY OF MATERIALS SCIENCE, JAPAN , THE JAPAN SOCIETY OF MECHANICAL ENGINEERS , 日本鉄鋼協会

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