1. Graduate Research Assistant, Purdue Center for Systems Integrity, 1500 Kepner Road, Lafayette, IN 47905 e-mail:
2. Kenninger Professor of Mechanical Engineering, Purdue University, Director, Center for Systems Integrity, 1500 Kepner Road, Lafayette, IN 47905 e-mail:
3. Technical Area Lead, Hard Target Fuzing, Fuzes Branch, Air Force Research Lab, Munitions Directorate, AFRL/RWMF, 306 W. Eglin Boulevard, Building 432, Eglin AFB, FL 32542-5430 e-mail: