摘要
Reliability enhancement testing(RET) is an accelerated testing which hastens the performance degradation process to surface its inherent defects of design and manufacture. It is an important hypothesis that the degradation mechanism of the RET is the same as the one of the normal stress condition. In order to check the consistency of two mechanisms, we conduct two enhancement tests with a missile servo system as an object of the study, and preprocess two sets of test data to establish the accelerated degradation models regarding the temperature change rate that is assumed to be the main applied stress of the servo system during the natural storage. Based on the accelerated degradation models and natural storage profile of the servo system, we provide and demonstrate a procedure to check the consistency of two mechanisms by checking the correlation and difference of two sets of degradation data. The results indicate that the two degradation mechanisms are significantly consistent with each other.
Reliability enhancement testing(RET) is an accelerated testing which hastens the performance degradation process to surface its inherent defects of design and manufacture. It is an important hypothesis that the degradation mechanism of the RET is the same as the one of the normal stress condition. In order to check the consistency of two mechanisms, we conduct two enhancement tests with a missile servo system as an object of the study, and preprocess two sets of test data to establish the accelerated degradation models regarding the temperature change rate that is assumed to be the main applied stress of the servo system during the natural storage. Based on the accelerated degradation models and natural storage profile of the servo system, we provide and demonstrate a procedure to check the consistency of two mechanisms by checking the correlation and difference of two sets of degradation data. The results indicate that the two degradation mechanisms are significantly consistent with each other.
基金
supported by the Natural Science Foundation of Hunan Province(2018JJ2282)
作者简介
WANG Xu was born in 1979.He is a deputy commander in chief and a chief quality engineer in the Second Academy of China Aerospace Science and Industry Corporation,and a Ph.D.in National University of Defense Technology.His research interests are project quality management and reliability engineering management.E-mail:wangxu1029@sina.com;Corresponding author:SUN Quan was born in 1973.He is a professor and a Ph.D.supervisor in National University of Defense Technology,and a general manager in Hunan Ginkgo Reliability Technology Institute Limited Corporation.His research interests are lifetime and reliability predication technologies of long-time products.E-mail:2183163572@qq.com.
