1. Senior Research Engineer Materials Engineering Department, Mechanical Engineering Division, Southwest Research Institute, San Antonio, TX 78238 e-mail:
2. Distinguished Member of Technical Staff Optimization and Uncertainty Quantification Department, Sandia National Laboratories, Albuquerque, NM 87185 e-mail:
3. John R. Murray Sr. Professor of Engineering Department of Civil and Environmental Engineering, Department of Mechanical Engineering, Vanderbilt University, Nashville, TN 37235 e-mail:
4. Research Engineer Materials Engineering Department, Mechanical Engineering Division, Southwest Research Institute, San Antonio, TX 78238 e-mail: