1. Research Scholar, Dept. of Applied Mechanics, Indian Institute of Technology Delhi, New Delhi 110016, India.
2. Professor, DynaMat Laboratory, Univ. of Applied Sciences of Southern Switzerland, 6952 Canobbio, Switzerland.
3. Associate Professor, Dept. of Applied Mechanics, Indian Institute of Technology Delhi, New Delhi 110016, India (corresponding author).
4. Emeritus Professor, Dept. of Applied Mechanics, Indian Institute of Technology Delhi, New Delhi 110016, India.