1. Dept. of Civil and Environmental Engineering, University of Maine, 5711 Boardman Hall, Orono, ME 04469, US
2. Advanced Structures and Composites Center, University of Maine, 35 Flagstaff Rd., Orono, ME 04469, US
3. Unistress Corp., 550 Cheshire Rd., Pittsfield, MA 01201, US