Prof. Katsuyuki Kida (Ph.D, Dr. Eng.)
Organization: University of Toyama, Professor, Solid Mechanics Laboratory (Department of Mechanical and Intellectual Systems Engineering, Faculty of Engineering, Address: Gofuku 3190, Toyama, 930-8555, Japan)
Speech Title: Three dimensional scanning Hall-probe microscopy for metal fatigue evaluation
University of Toyama, Assistant Professor, Koshiro Mizobe
Department of Mechanical and Intellectual Systems Engineering, Japan
Speech Title: Fracture behavior of polymer bearings made by 3D printing method in water and dry conditions
Koshiro Mizobe is an assistant professor in the Department of Mechanical Engineering at the University of Toyama, Japan. He has published over 50 papers in various research fields including: evaluation of stress intensity factors, repeated heating, homology evaluation of microstructure, and polymer bearings.
Koshiro studied mechanical engineering at Kyushu University, Japan, graduating in 2013. He studied the repeated quenching refinement method of high-carbon chromium steels in his PhD course. For this work he received the Research Fellowship for Young Scientists in 2013-2014 from the Japan Society for the Promotion of Science as well as Top Young Researcher Award in 2012 from Kyushu University. Since 2015 he has been an assistant professor in the Department of Mechanical Engineering at the University of Toyama. He has won some best paper awards from international committees (ICMDME, CMPSE and ICMTM) and received some grants (25th ISIJ research promotion grant from the Iron and Steel Institute of Japan and research promotion grant from JKA).
His current research topics with a brief explanation are as follows.
Repeated heating method
Martensitic high-carbon high-strength bearing steel is one of the main alloys used for rolling contact applications where high wear resistance is required. Refining the prior austenite grain size through repeated heating is a process commonly used to enhance the material’s strength. He studied the effect of repeated heating on the microstructure near inclusions through the rolling bending fatigue tests.
Development of hybrid polymer bearings
Koshiro is focusing on polymer bearings because it is suitable for the no lubricant situation and the corrosive situations. In particular, he focuses on PEEK which is a tough semi-crystalline thermoplastic polymer and PTFE which has low friction coefficient. Now, he develops the combination of PEEK races-PTFE retainer bearings.