1. Ph.D. Candidate, Dept. of Civil Engineering, Clemson Univ., Clemson, SC 29634 (corresponding author).
2. Ph.D. Candidate, Dept. of Electrical and Computer Engineering, Clemson Univ., Clemson, SC 29634.
3. Associate Professor, Dept. of Civil Engineering, Clemson Univ., 310B Lowry Hall, Box 340911, Clemson, SC 29634.
4. Associate Professor (now Adjunct), Dept. of Electrical and Computer Engineering, Clemson Univ., Clemson, SC 29634.