Kefu Liu is currently a Full Professor at the Department of Mechanical Engineering, Lakehead University, Canada. He received his B.Eng. degree and M.Sc. degree in Mechanical Engineering from Central South University, China, in 1981 and 1984, respectively, and his Ph.D. degree in Mechanical Engineering from the Technical University of Nova Scotia, Canada, in 1992. He was an Assistant Professor at St. Mary’s University from 1993 to 1995 and at Dalhousie University from 1995 to 1998. He joined Lakehead University as an Assistant Professor in 1998 and was promoted to Associate Professor in 2001 and Full Professor in 2005. He is a member of the Canadian Society of Mechanical Engineering and a license holder of Professional Engineers, Ontario. His research interests include vibration theory, vibration control, energy harvesting, machine condition monitoring and diagnosis, robotics, and mechatronics.