1. Materials and Structural Systems Division, National Institute of Standards and Technology, 100 Bureau Drive, Stop 8615, Gaithersburg, MD 20899, US, e-mail: dale.bentz@nist.gov
2. Purdue Univ., School of Engineering, 550 Stadium Mall Drive, West Lafayette, IN 47907, US, e-mail: barrettl@purdue.edu
3. Purdue Univ., School of Engineering, 550 Stadium Mall Drive, West Lafayette, IN 47907, US, e-mail: idelavar@purdue.edu
4. Materials and Structural Systems Division, National Institute of Standards and Technology, 100 Bureau Drive, Stop 8615, Gaithersburg, MD 20899, US
5. Purdue Univ., School of Engineering, 550 Stadium Mall Drive, West Lafayette, IN 47907, US, e-mail: wjweiss@purdue.edu