1. Postdoctoral Fellow, Dept. of Civil and Environmental Engineering, Worcester Polytechnic Institute, Worcester, MA 01609; formerly, Ph.D. Research Scholar, Dept. of Civil Engineering, Indian Institute of Technology Madras, Chennai 600036, India.
2. Professor, Dept. of Civil Engineering, Indian Institute of Technology Madras, Chennai 600036, India.
3. Associate Professor, Dept. of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India.
4. Professor, Dept. of Civil Engineering, Indian Institute of Technology Madras, Chennai 600036, India (corresponding author).