中文摘要：

He Liping was born in 1973. She is a Ph.D. candi-date of the School of Mechanical Engineering, Dalian University of Technology. Her research interests include system reliability analysis, design optimization, product warranty, and computational intelligence in product design. E-mail： hlping-0621@163.com. Qu Fuzheng was born in 1957. He is a full professor and a Ph. D. tutor in the School of Mechanical Engineering, Dalian University of Technology. His research interests include in structural fatigue, system reliability simulation and innovation design of engineering machinery. E-mail： fzqu@dlut.edu.cn.