1. Ph.D. Candidate, School of Mechanical and Electrical Engineering, Center for System Reliability and Safety, Univ. of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China.
2. Associate Professor, School of Mechanical and Electrical Engineering, Center for System Reliability and Safety, Univ. of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China.
3. Professor, School of Mechanical and Electrical Engineering, Center for System Reliability and Safety, Univ. of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China (corresponding author).