Wen-Tung Chang was born in 1978 in Taipei, Taiwan. He received his Ph.D. Degree in Power Mechanical Engineering from the National Tsing Hua University in 2007 for his work on mechanical error analysis of planar cam mechanisms and its applications. His Ph.D. dissertation won him an Outstanding Ph.D. Dissertation Award from the Chinese Society of Mechanism and Machine Theory in November 2007. In January 2008, Dr. Chang was recruited as a Defense Industry Reserve Duty Officer of Opto-Mechatronics Technology Center at the National Taiwan University of Science and Technology in Taipei, Taiwan, where he served as a Post-doctoral Researcher for the remaining four years of his military service. He led several projects to innovate and develop automated optical inspection systems for measurement and quality control of precision cutting tool products. In February 2012, Dr. Chang joined the National Taiwan Ocean University in Keelung, Taiwan, where he is currently an Assistant Professor in the Department of Mechanical and Mechatronic Engineering. His current teaching and research interests include kinematics and dynamics of machinery, mechanism and machine design, manufacturing processes and devices, precision mechanical measurement, and automated optical inspection.