PLENARY SPEAKERS


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

Professor Katsuyuki Kida was born in 1968 in Osaka, where he studied mechanical engineering at Osaka University from 1988. Apart from course work, he studied rolling contact fatigue (RCF) occurring in TiC and TiN coated steels using both X-ray diffraction and scanning acoustic microscopy. After graduation he pursued his academic career and obtained a Ph.D. in engineering mechanics in 2000, investigating RCF problems of all-Si3N4 bearings. By observing cracking and flaking failure under RCF, he succeeded in explaining the material`s features from the viewpoint of fracture mechanics. From 2000 he focused his work on investigating the contact problems of several materials used in machine elements. He has also continued fundamental research on contact problems, for which he received ‘The Best Paper Prize (FFEMS PRIZE)’ from ‘Fatigue & Fracture of Engineering Materials & Structures’ journal in 2005. The awarded papers reported establishing a crack growth mechanism under contact pressure, a problem previously unsolved for over 70 years since S. Way’s proposed theory. His research interests now include the development of three dimensional scanning Hall-probe microscope technologies, fatigue phenomena in polymer bearing, crack growth mechanism under contact stresses and refinement of high-carbon steels. He holds and has held a number of prestigious leadership roles in academy-industry corroboration programs: refinement of steels, new joint system in humanoid robots and fatigue of polymer bearings in "Strategic Fundamental Technologies Strengthening Assistance Programs" (Ministry of Economics, Trade and Industry, Japan, 2009-2013); scanning Hall-probe microscopy in "Fundamental Studies on Technologies for Steel Materials with Enhanced Strength and Functions" (Consortium of the JRCM, Japan, 2008-2012); and ceramic bearing elements in the project supported by "Japanese Energy and Industrial Technology Development Organization" (NEDO, Japan, 2007-2011).” As a chairperson of department of mechanical engineering in University of Toyama, Professor Kida is heading education and research projects (2019-)."

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.