Kojima Tomohisa

• 2024 - 2027 Creation of an ultra-lightweight impact-absorbing metamaterial based on fractal structures
• 2024 - 2025 Development of high strain rate testing equipment using underwater pressure wave to evaluate high strain rate properties of materials
• 2024 - 2025 Development of a cushioning package using a Kirigami-induced three-dimensional structure
• 2021 - 2025 Investigation into the mechanism of interfacial strength of polymeric resin/metal adhesive joint at ultra-high loading rates
• 2021 - 2024 Creation of functional lattice structure for energy absorption of underwater pressure waves
2022 - 2023 Design of micro-lattice structure design for superior impact energy absorption performance
2021 - 2022 高い衝突安全性能を有するポリマーラティス構造部材の創出
2018 - 2021 Dynamic cavitation inception on the solid-fluid interface with fluid-structure interaction
2019 - 2020 Internal strain measurement of human brain model with actual human head shape and its application to concussion prevention in American Football
2017 - 2019 Dynamic behavior and low velocity transverse impact response of fluid-conveying functionally graded shells under mechanical and thermal loads

• Tomohisa Kojima, Daiki Hotta, Tomoaki Tsuji. Energy Absorption Characteristics of Rigid Polymer Lattice Structure under Multiple Compressions. Journal of the Japanese Society for Experimental Mechanics. 2025. 25. 1. in press
• Tomohisa Kojima, Yuta Takase, Tomoaki Tsuji. Derivation of the basic structures of orthogonally symmetric lattice structures and finite element analysis of their compressive properties. Transactions of the JSME. 2023. 89. 927. 23-00213
• Aoi Takagi, Yoshikatsu Kimoto, Akihiro Shinozaki, Hiroyuki Yamada, Tomohisa Kojima, Akio Yonezu. Development of LaSAT and bonding strength evaluation of epoxy adhesive over a wide range of loading rates. The Journal of Adhesion. 2023. 100. 7. 576-598
• Tomohisa Kojima, Takahiro Kawano, Tomoaki Tsuji. Compressive Properties of Polymer Lattice Structures with Different Unit Cell Geometries at Low Strain Rates. Journal of the Japanese Society for Experimental Mechanics. 2023. 23. 2. 138-144
• Tomohisa Kojima, Yuta Takase, Tomoaki Tsuji. Compressive behavior and energy absorption capacity of a lattice structure generated by topology optimization. International Journal of Materials and Product Technology. 2023. 66. 3/4. 252-265

ｍore...

• Akio Yonezu, Yoshikatsu Kimoto, Akihiro Shinozaki, Shotaro Yasuda, Tomohisa Kojima, Hiroyuki Yamada. Development of LaSAT and Bonding Strength Evaluation of Epoxy Adhesive over a Wide Range of Loading Rates. Proceedings of JSME International Conference on Materials and Processing 2022. 2022. 1. Th-1B-2. 1-5
• Ryoya Kuriyama, Takahiro Kawano, Tomohisa Kojima, Hiroyuki Yamada, Kohei Tateyama, Tomoaki Tsuji. Dynamic Compressive Behavior of Polymeric Micro-lattice Structure Fabricated by Optical 3D Printer. Proceedings of JSME International Conference on Materials and Processing 2022. 2022. 1. We-2B-2. 1-3
• Yuta Takase, Takahiro Kawano, Tomohisa Kojima, Tomoaki Tsuji. Finite Element Analysis on Plastic Collapse Behavior of Topology-Optimized Cellular Structure Subject to Compressive Loading. Proceedings of the ASME 2021 International Mechanical Engineering Congress and Exposition. 2021. 12
• Takahiro Kawano, Yuta Takase, Tomohisa Kojima, Hiroyuki Yamada, Kohei Tateyama, Tomoaki Tsuji. Evaluation of Compressive and Energy Absorption Characteristic of a Closed-cell Polymeric Foam subject to Dynamic Loading. EPJ Web of Conferences. 2021. 250. 03004-03004
• Tomohisa Kojima, Yuta Takase, Takahiro Kawano, Tomoaki Tsuji. Compressing behavior of a topology-optimized cellular structure. Proceedings of the 7th Asian Conference on Mechanics of Functional Materials and Structures. 2021

ｍore...

• Strain rate dependence of the compressive strength of polymer lattice structures with typical unit cell topologies
  (The 14th Asia-Pacific Conference on Fracture and Strength 2024)
• Making Research Paper Evaluation of Compressive Characteristics of Microlattice Structures Using Dynamic Explicit FEM
  (JSME 31th Materials and Processing Conference 2024)
• Evaluation of Strain Rate Dependent Compressive Properties of Mechanical Metamaterials with Multistable Structures
  (JSME 31th Materials and Processing Conference 2024)
• Evaluation of tensile properties of Kagome lattice structures
  (JSMS Kanto Branch 2024 Student Research Exchange Presentation 2024)
• Evaluation of mechanical properties of Kirigami-induced 3D honeycomb structure
  (JSMS Kanto Branch 2024 Student Research Exchange Presentation 2024)

ｍore...

• 2014 - 2017 Tokyo Institute of Technology Graduate School of Science and Engineering Department of Mechanical Sciences and Engineering
• 2010 - 2014 Tokyo Institute of Technology Graduate School of Science and Engineering Department of Mechanical Sciences and Engineering
• 2006 - 2010 Tokyo Institute of Technology School of Engineering Department of Mechanical Engineering and Science

• Doctor of Engineering (Tokyo Institute of Technology)

• 2024/04 - 現在 Saitama University Graduate School of Science and Engineering Associate Professor
• 2019/04 - 2024/03 Chuo University Faculty of Science and Engineering Research Associate
• 2019/04 - 2021/03 Meiji University School of Science and Technology Part-time Lecturer
• 2017/07 - 2019/03 Tokyo Institute of Technology School of Environment and Society Research Fellow
• 2017/04 - 2019/03 Meiji University School of Science and Technology Assistant Professor

• 2024/04 - 現在 The Japan Society of Mechanical Engineers Kanto Branch Representative of Materials & Mechanics Division
• 2024/04 - 現在 日本材料学会 関東支部 会計幹事
• 2024/04 - 現在 日本機械学会 材料力学部門 運営委員
• 2022/04 - 現在 The Society of Materials Science, Japan, Kanto Branch Permanent member
• 2021/05 - 現在 The Society of Materials Science, Japan Committee on IMPACT Organizer
2018/10 - 現在 The Society of Materials Science, Japan Committee on IMPACT Committee member
2025/03 - 2027/02 The Society of Material Science, Japan Representative
2023/04 - 2025/03 The Japan Society of Mechanical Engineers Kanto Branch Trustee in Tokyo Bloc
2019/04 - 2021/03 Law & Technology Professional Committee, The Japan Society of Mechanical Engineers Committee member
2019/04 - 2021/03 Materials & Mechanics Division, The Japan Society of Mechanical Engineers Committee member
2019/04 - 2021/03 The Japan Society of Mechanical Engineers Kanto Branch Representative of Materials & Mechanics Division

• 2024/11 - Saitama University President's Encouragement Award (Research) The American Society of Mechanical Engineers (ASME) G.E.O.Widera Literature Award
• 2024/07 - The American Society of Mechanical Engineers G.E.O. Widera Literature Award Dynamic Cavitation Inception by Wave Propagation Across Solid-Fluid Interface With Varying Solid Surface Wettability
• 2023/03 - Committee on IMPACT, The Society of Materials Science, Japan, 衝撃部門賞 奨励賞
• 2023/03 - Chuo University Academic Research Encouragement Award Evaluation of wave propagation response and fracture at the interface of dissimilar materials including fluids
• 2022/10 - Kanto Branch, The Society of Materials Science, Japan Best Presentation Award at 2022 Student Research Exchange Investigation of lattice structure with superior shear resistance by using topology optimization
2022/08 - The Japanese Society for Experimental Mechanics Young Researcher Encouragement Award Internal Strain Measurement Method of Gel By Applying Particle Image Velocimetry and Digital Image Correlation
2022/04 - The Japan Society of Mechanical Engineers Young Engineers Award Evaluation of wave propagation response and fracture at the interface of dissimilar materials including fluids
2021/07 - Advances in Engineering Key Scientific Article Evaluation of dynamic fracture toughness of a bonded bi-material interface subject to high-strain-rate shearing using digital image correlation
2021/04 - The Society of Materials Science, Japan, Kanto Branch Award for Active Young Members
2020/11 - The Society of Materials Science, Japan, Committee on IMPACT Best presentation award at the 13th Symposium for Impact Behavior of Materials Puncture Impact Test on Glass Plate Fitted with Shatterproof Film
2019/12 - Thai Society of Mechanical Engineers AMM Best Paper Runner-up Award at the 10th TSME International Conference on Mechanical Engineering Examination of optimum conditions of stretching, polarization and annealing when producing piezoelectric PVDF film
2019/03 - Department of Mechanical Engineering, Meiji University Hisao Hasegawa Research Award Wave propagation across solid-fluid interface with fluid-structure interaction
2018/02 - Tokyo Institute of Technology Seiichi Tejima Research Award (Doctoral Dissertation Award) Wave propagation across solid-fluid interface with fluid-structure interaction
2016/01 - Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology First prize of the Good presentation Award, The poster session for the interim report of Doctor's degree program
2015/10 - Tokyo Institute of Technology 2015 Beihang Univ.-Tokyo Tech Joint Workshop on Nano/Micro-Engineering participation support Effect of wave propagation across solid-fluid interface on fluid-structure interaction
2015/09 - Tokyo Tech International Research Opportunities Program, Tokyo Institute of Technology UK-Japan Symposium 2015 participation support Wave Propagation across Solid-Fluid Interface with Fluid-Structure Interaction

Society of Automotive Engineers of Japan ,  THE SOCIETY OF MATERIALS SCIENCE, JAPAN ,  The Japanese Society for Experimental Mechanics ,  ASME ,  THE JAPAN SOCIETY OF MECHANICAL ENGINEERS ,  DYMAT - European association for the promotion of research into the dynamic behaviour of materials and its applications ,  Japan Boiler Association ,  The Japanese Society of Clinical Sports Medicine