1. School of Mechatronics & Vehicle Engineering, Chongqing Jiaotong University, Chongqing 400074, China
2. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
3. State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
4. School of Aeronautics, Chongqing Jiaotong University, Chongqing 400074, China