Dr. Y. Takahashi received his B.S. from Kyoto University in 1997 (Faculty of Mechanical Engineering), and his M.S. from Kyoto University in 1999 (Department of Mechanical Engineering and Science). After his carrier as a corporate research engineer in HRL (Hitachi Research Laboratory), he started his doctoral course in 2004. He received his Ph.D from Kyoto University in 2007 (Department of Mechanical Engineering and Science). He then joined AIST (National Institute of Advanced Industrial Science and Technology, Japan) as a postdoctoral fellow. In 2011, he started his carrier as an assistant professor of Kansai University (Department of Mechanical Engineering). He was promoted to an associate professor in 2013 and a full professor in 2020. He stayed in FAU (Friedrich-Alexander Universität), Germany as a guest researcher from 2019.9 to 2020.7. Prof. Takahashi has been invited by Nagoya University (IMaSS) as an associate professor (2019~2020), then as a professor (2021~).
His academic research interest has been, in simple words, the strength of materials. He originally engaged in the study of small cracks in CFRPs (under the guidance of Profs. R. Ohtani and T. Kitamura in Kyoto University) during his M.S. course. As a research engineer in HRL, he engaged in the structural integrity of semiconductor device packages for harsh environmental use. His dissertation work (with Profs. T. Kitamura and H. Hirakata in Kyoto University) was targeted to reveal the applicability of the fracture mechanics criterion to sub-micrometer structures. He then extended his study field to cover metal fatigue/embrittlement (with Profs. H. Noguchi, K. Higashida and M. Tanaka in Kyushu University), particularly by leveraging his expertise in ion beam processing.
As an independent researcher, he is currently engaged in several major study categories (⇒Research) based on his variety of experiences. He has collaborated with Nagoya University (Emeritus Prof. N. Tanaka, Profs. S. Muto and S. Arai) in the field of applied electron-microscopy. He has also collaborated with JEOL Ltd., Kobe Steel Ltd., Nippon Steel Corporation Ltd. and Chubu Electric Power Ltd. regarding micro-mechanical testing and the analyses of fatigue mechanisms under various conditions. He is a member of JSME (Japan Society of Mechanical Engineers), JSMS (The Society of Materials Science, Japan) and JSM (The Japan Society of Microscopy).
[Study keywords]
Strength of materials, Fracture mechanics, Fatigue, Hydrogen embrittlement, Creep, Thin films, Interfaces, Gain boundaries, Dislocations, Strain-aging, Aluminum alloys, Steels, Superalloys, Micro-components, Micro-mechanism, TEM, SEM, FIB, In-situ testing