1. G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, US (Corresponding author), e-mail: katie.matlack@gmail.com
2. School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, US.
3. Electric Power Research Institute, Charlotte, NC 28262, US.
4. G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, US.
5. Dept. of Civil and Environmental Engineering, Northwestern Univ., Evanston, IL 60208, US.