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2003年　早稲田大学理工学部機械工学科卒業2008年　早稲田大学大学院理工学研究科機械工学専攻博士後期課程修了2008年　博士（工学）2008年　名古屋大学大学院工学研究科　助教2011年～2012年　シドニー大学訪問学者2014年　早稲田大学理工学術院　講師2016年　早稲田大学理工学術院　准教授2021年～　早稲田大学理工学術院　教授　構造材料や機能性材料の長期信頼性を確立することを目的として、ナノレベルからマクロスケールに至る材料強度特性や破壊現象を実験と解析により力学的な評価を行っている。具体的には以下のテーマに取り組んでいる。１．金属材料の疲労損傷治癒技術の開発　電子風力による原子再配列・再結合を利用した疲労損傷治癒技術を提案している。疲労損傷治癒メカニズムを実験および解析的に明らかにし、構造材料の格段な長寿命化の実現を目指している。２．繊維強化複合材料の超長疲労特性評価と寿命評価技術の構築　炭素繊維強化複合材料のギガサイクル疲労特性や損傷進展機構を実験及び解析的に評価している。繊維強化複合材料の寿命予測技術を高度化し、構造物の長期信頼性評価を確保することを目指している。３．金属表面のナノ空間構造体の創製と異種材料直接接着技術への展開　金属表面に3Dナノ空間構造を創製し、アンカー効果と化学結合により炭素繊維強化複合材料との新しい異種接合技術を提案している。ナノ構造と化学結合による接合強度発現機構を明らかにし、ボルトレス構造への展開を目指している。４．機能性ナノマテリアルの創成とその応用　ナノ材料は体積に対する表面積の割合が高く、これに起因して様々な機能性を発現できる可能性を秘めている。応力誘導法や陽極酸化・エッチングプロセスなどにより高密度・高秩序なナノ材料を創製し、格段に優れた機能性を有する材料の創製を目指している。■代表論文および著書/Representative publications(1) Hikaru Abe, Joon Cheol Chung, Takaaki Mori, Atsushi Hosoi, Kristine Munk Jespersen, Hiroyuki Kawada, The effect of nanospike structures on direct bonding strength properties between aluminum and carbon fiber reinforced thermoplastics, Composites Part B, 2019, 172, 26-32.(2) Yoshihiko Arao, Jonathon D. Tanks, Masatoshi Kubouchi, Akira Ito, Atsushi Hosoi, Hiroyuki Kawada, Direct exfoliation of layered materials in low-boiling point solvents using weak acid salts, Carbon, 2019, 142, 261-268.(3) Atsushi Hosoi, Hiroyuki Kawada, Fatigue life prediction for transverse crack initiation of CFRP cross-ply and quasi-isotropic laminates, Materials, 2018, 11(7), 1182, (1-16pages).(4) Kristine M. Jespersen, Jens A. Glud, Jens Zangenberg, Atsushi Hosoi, Hiroyuki Kawada, Lars P. Mikkelsen, Uncovering the fatigue damage initiation and progression in uni-directional non-crimp fabric reinforced polyester composite, Composites Part A: Applied Science and Manufacturing, 2018, 109, 481-497.(5) Atsushi Hosoi, Yuhei Yamaguchi, Yang Ju, Yasumoto Sato, Tsunaji Kitayama, Detection and quantitative evaluation of defects in glass fiber reinforced plastic laminates by microwaves, Composite Structures, 2015, 128, 134-144.(6) Atsushi Hosoi, Shigeyoshi Sakuma, Yuzo Fujita and Hiroyuki Kawada, Prediction of initiation of transverse cracks in cross-ply CFRP laminates under fatigue loading by fatigue properties of unidirectional CFRP in 90° direction, Composites Part A: Applied Science and Manufacturing, 2015, 68, 398-405.(7) Atsushi Hosoi, Hisataka Koto and Yang Ju, Fabrication of AFM probe with CuO nanowire formed by stress-induced method, Microsystem Technologies, 2014, 20(12), 2221-2229.(8) Lijiao Hu, Yang Ju and Atsushi Hosoi, Growth of 3-D flower/grass-like metal oxide nanoarchitectures based on catalyst-assisted oxidation method, Nanoscale Research Letters, 2014, 9 (116), 8pages.(9) Atsushi Hosoi, Takahiro Yano, Yasuyuki Morita and Yang Ju, Quantitative evaluation of the displacement distribution and stress intensity factor of fatigue cracks healed by a controlled high-density electric current field, Fatigue and Fracture of Engineering Materials and Structures, 2014, 37(9), 1025-1033.(10) Yanbin Cui, Yang Ju, Baiyao Xu, Peng Wang, Naoki Kojima, Kazuma Ichioka and Atsushi Hosoi, Mimicking a gecko’s foot with strong adhesive 2003: Graduated from the Department of Mechanical Engineering, School of Science and Engineering, Waseda University2008: Completed the doctoral program in the Department of Mechanical Engineering, Graduate School of Science and Engineering, Waseda University2008: Obtained Ph.D. (Engineering)2008: Assistant Professor, Graduate School of Engineering, Nagoya University2011 to 2012: Visiting Scholar, The University of Sydney2014: Assistant Professor, Faculty of Science and Engineering, Waseda University2016: Associate Professor, Faculty of Science and Engineering, Waseda UniversitySince 2021: Professor, Faculty of Science and Engineering, Waseda University　Pursuing long-term reliability of structural materials and functional materials, conducting mechanical evaluations of the strength characteristics and fracture phenomena of materials, from nano- to macro-scale, through experiments and analysis. More specifically, work in the following areas.1 . Development of a fatigue damage healing technique for metal materials　Propose a technique for healing fatigue damage using atomic rearrangement and recombination by electron wind force. Aim to clarify the fatigue damage healing mechanism through experiments and analysis, and achieve a remarkable prolongation of the product life of structural materials.2 . Establishment of techniques for evaluation of very high-cycle fatigue characteristics and fatigue life 　Evaluate the fatigue characteristics in the gigacycle region, and the damage growth mechanism in carbon fiber-reinforced composite materials, through experiments and analysis. Aim to improve the life prediction technique for fiber-reinforced composite materials, and ensure long-term reliability in the evaluation of structures.3 . Creation of nano-space structures on metal surfaces, and development of a direct bonding technique for different kinds of materials　Create a 3D nano-space structure on a metal surface, and propose a new bonding technique for different kinds of materials, using fiber-reinforced composite materials, the anchor effect, and chemical bonding. Aim to clarify the mechanism involved in bonding strength development using nanostructures and chemical bonding, and apply the technique to boltless structures.4. Creation and application of functional nanomaterials　Nanomaterials have a high ratio of surface area to volume, and have a variety of potential functionalities based on this feature. Aim to create high-density and highly ordered nanomaterials by utilizing the stress induction method, anode oxidation, and etching processes; and to create materials with strikingly superior functionalities.strength based on a spinnable vertically aligned carbon nanotube array, RSC Advances, 2014, 4, 9056-9060.(11) Peng Wang, Yang Ju, Yanbin Cui and Atsushi Hosoi, Copper/parylene core/shell nanowire surface fastener used for room-temperature electrical bonding, Langmuir, 2013, 29(45), 13909-13916.(12) Atsushi Hosoi, Kishi Tomoya and Yang Ju, Healing of fatigue crack by high-density electropulsing in austenitic stainless steel treated with the surface-activated pre-coating, Materials, 2013, 6(9), 4213-4225.(13) Yongpeng Tang, Atsushi Hosoi, Yasuyuki Morita and Yang Ju, Restoration of fatigue damage in stainless steel by high-density electric current, International Journal of Fatigue, 2013, 56, 69-74.(14) Atsushi Hosoi, Takatsugu Nagahama and Yang Ju, Fatigue crack healing by a controlled high density electric current field, Material Science and Engineering: A, 2012, 533(30), 38-42.(15) Atsushi Hosoi, Narumichi Sato, Yasuyuki Kusumoto, Keita Fujiwara and Hiroyuki Kawada, High-cycle fatigue characteristics of quasi-isotropic CFRP laminates (Initiation and propagation of delamination considering the interaction with transverse cracks), International Journal of Fatigue, 2010, 32(1), 29-36.(16) Atsushi Hosoi, Yoshihiko Arao and Hiroyuki Kawada, Transverse crack growth behavior considering free-edge effect in quasi-isotropic CFRP laminates under high-cycle fatigue loading, Composites Science and Technology, 2009, 69(9), 1388-1393.Fatigue crack healing11Mechanics of Materials材料強度学細井　厚志 Atsushi HOSOITEL：03-5286-2354e-mail：[email protected]：http://www.hosoi.amech.waseda.ac.jp/index.html