Sung-Jin Song obtained his Ph.D. in Engineering Mechanics from Iowa State University, Ames, Iowa, USA, in 1991. He worked at Daewoo Heavy Industries, Ltd., in Incheon, Korea, for 5 years from 1983, where he was certified as an ASNT Level III in RT, UT, MT, and PT. He worked at Chosun University, Gwangju, Korea, as an Assistant Professor for 5 years starting in 1993. Since 1998, he has been employed at Sungkyunkwan University, Suwon, Republic of Korea, and he is currently a Professor in the Mechanical Engineering Department.