1. School of Mechanical Engineering, Yangzhou University, Yangzhou 225127, P. R. China
2. Nanjing Guobo Electronics Company Limited, Nanjing 210000, P. R. China
3. Chongqing CEPREI Industrial Technology Research Institute Co., Ltd, Chongqing 401332, P. R. China
4. China Electronic Product Reliability and Environmental Testing Research Institute, Guangzhou 511370, P. R. China