1. School of Civil Engineering, The University of Sydney, Sydney, NSW 2006, Australia
2. Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
3. Zernike Institute for Advanced Materials, University of Groningen, 9747 AG Groningen, The Netherlands
4. Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
5. Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, People's Republic of China
6. Department of Civil and Environmental Engineering, University of Missouri, Columbia, Missouri 65211, USA