1. School of Mechanical and Aerospace Engineering; Nanyang Technological University; 50 Nanyang Avenue Singapore 639798 Singapore
2. Xi'an Research Institute of High Technology; Xi'an 710025 China
3. School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue Singapore 639798 Singapore
4. School of Science; Lishui University; Lishui 323000 China
5. Singapore Institute of Manufacturing Technology; 71 Nanyang Dr Singapore 638075 Singapore
6. Department of Engineering Mechanics; Tsinghua University; Beijing 100084 China