Jim C. I. Chang is currently adjunct professor in the Department of Electric and Computer Engineering at North Carolina State University, and visiting chair professor at National Cheng Kung University in Taiwan.  He received his Ph.D. in theoretical and applied mechanics from Cornell University. He retired as chief scientist of the Army Research Laboratory (ARL).  Prior to joining ARO in 1998, Dr. Chang served as director of the Aerospace and Materials Science Directorate of the Air Force Office of Scientific Research, chief scientist of the Naval Air Systems Command, manager of advanced materials, structures and space systems at NASA, and branch head of the structural integrity branch of the Naval Research Laboratory.