1. College of Engineering, Swansea University, Swansea SA2 8PP, UK
2. Department of Mechanical and Aerospace Engineering, Old Dominion University, Norfolk, VA 23529, USA
3. Department of Applied Mechanics, Indian Institute of Technology-Madras, Chennai 600 036, India
4. Department of Applied Mechanics, Technical University of Lublin, 20-618 Lublin, Poland