1. Ph.D. Candidate, Center of Intelligent Material Systems and Structures, Dept. of Mechanical Engineering, Virginia Polytechnic Institute and State Univ., 300 Durham Hall, Mail Code 0261, Blacksburg, VA 24061. E-mail: armaghan@vt.edu
2. Professor, Interdisciplinary Center for Applied-Mathematics, Virginia Polytechnic Institute and State Univ., Blacksburg, VA 24061. E-mail: cliff@icam.vt.edu
3. G. R. Goodson Professor and Director, Center of Intelligent Material Systems and Structures, Dept. of Mechanical Engineering, Virginia Polytechnic Institute and State Univ., 310 Durham Hall, Mail Code 0261, Blacksburg, VA 24061. E-mail: dinman@vt.edu