1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, College of Mechanical & Vehicle Engineering, Hunan University and the Green Car Collaboration Innovation Center of Hunan province; Changsha Hunan 410082 People's Republic of China
2. College of Civil Engineering; Hunan University; Changsha Hunan 410082 People's Republic of China
3. College of Materials Science and Engineering; Hunan University; Changsha Hunan 410082 People's Republic of China