1. State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Zheda Road 38, 310027 Hangzhou, China;
2. Ningbo Research Institute, Zhejiang University, 315100 Ningbo, China
3. Tribology Research Institute, Southwest Jiaotong University, No. 111, First Section, North of Second Ring Road, 610031 Chengdu, China
4. Department of Mechanical Engineering, The University of Sheffield, Mappin Street, Sheffield S1 3JD, UK
5. Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia
6. Rail Technologies, British Steel Ltd., Brigg Road, Scunthorpe, North Lincolnshire DN16 1BP, UK