Research on stepupstress accelerated life test of aerospace electrical connector

PAN Jun1, LIU Hongjie1, CHEN Wenhua1,2, LIU Junjun3, XV Shiwei1, WANG Xiaoyun1
(1. Institute of Mechanical Design and Manufacturing, Zhejiang SciTech University, Hangzhou 310018, China;
2. Institute of Mechanical Design, Zhejiang University, Hangzhou 310027, China;
3. Hangzhou Aerospace Electrical Technology Co., Ltd., Hangzhou 310015, China)

Abstract: In order to evaluate the contactreliability of aerospace electrical connectors with high reliability and long life, the contact failure mechanism of aerospace electrical connectors was analyzed, the failure physics model was the Arrhenius relationship and the contact life followes Weibull distribution under the action of temperature stress were indicated. On this basis, the statistical analysis for stepupstress accelerated life test data was established, which was derived from maximum likelihood estimation theory and Nelson failure model. Through stepupstress accelerated life test and data statistical analysis the estimated value of the reliability character of one type of aerospace electrical connectors was yielded. The results indicate that the proposed model and the algorithm can obtain satisfactory solutions.
Key words: stepupstress; accelerated life test; aerospace electrical connector; reliability assessment; statistical analysis