Ji-Ho Song is Professor Emeritus of Mechanical Engineering at Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea. He received his B.S. (1969), M.S. (1971), and Dr. Engineering (1974) in Mechanical Engineering at Osaka University, Osaka, Japan, under the guidance of Professor Makoto Kikukawa. In 1975, he was Wissenschaftlicher Mitarbeiter in Lehrstuhl Mechanik A at Technische Universität München, Germany, with the help of Professor Klaus Heckel.

In 1977 he joined Hanyang University, Seoul, Korea, and then moved to Osaka University, Japan, in 1982 as Research Associate with the support of Professor Masahiro Jono. He returned to Korea in 1988 as Associate Professor at KAIST on the recommendation of Professor Youn-Yong Earmme, becoming Professor Emeritus in 2011. He received four times departmental outstanding teaching awards. His principal field of research is in fatigue and fatigue-related database and expert system. Chung-Youb Kim is Professor in School of Mechanical Design Engineering of Chonnam National University, Yosu, Korea. He received his B.S. (1986) in mechanical engineering of Korea University, Seoul, Korea, and M.

S. (1988) and Ph.D. degree (1993) in mechanical engineering of KAIST, Korea, under the guidance of Professor Ji-Ho Song. In 1993, he had worked for Mando Co. as Senior Research Engineer Durability Testing Team for Chassis Components. In 1997, he joined the Chonnam National University, Yosu, Korea. In 2008 he was Visiting Professor of Department of Mechanical Engineering, Johns Hopkins University, USA, with the help of Professor K.

J. Hemker and W.N. Sharpe, Jr. His research interests include fatigue testing under random loading and analysis of thin film materials and mechanical components.