Accelerated Degradation Reliability Modeling and Test Data Statistical Analysis of Aerospace Electrical Connector  

作　　者：CHEN Wenhua LIU Juan GAO Liang PAN Jun ZHOU Shengjun 

机构地区：[1]The State Key Lab of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China [2]School of Mechanical andAutomatic Control, Zhejiang Sci-Tech University, Hangzhou 310018, China [3]Hangzhou Aerospace Electrical Technology Co. Ltd., Hangzhou 310015, China

出　　处：《Chinese Journal of Mechanical Engineering》2011年第6期957-962,共6页中国机械工程学报（英文版）

基　　金：supported by National Natural Science Foundation of China (Grant No. 50935002,Grant No. 51075370,Grant No. 51105341);National Hi-tech Research and Development Program of China (863 Program,Grant No. 2007AA04Z409);Civil Aerospace Science and Technology Pre-research Project of China (Grant No. B122006 2302)

摘　　要：As few or no failures occur during accelerated life test,it is difficult to assess reliability for long-life products with traditional life tests.Reliability assessment using degradation data of product performance over time becomes a significant approach.Aerospace electrical connector is researched in this paper.Through the analysis of failure mechanism,the performance degradation law is obtained and the statistical model for degradation failure is set up; according to the research on statistical analysis methods for degradation data,accelerated life test theory and method for aerospace electrical connector based on performance degradation is proposed by improving time series analysis method,and the storage reliability is assessed for Y11X series of aerospace electrical connector with degradation data from accelerated degradation test.The result obtained is basically consistent with that obtained from accelerated life test based on failure data,and the two estimates of product＇s characteristic life only have a difference of 8.7%,but the test time shortens about a half.As a result,a systemic approach is proposed for reliability assessment of highly reliable and long-life aerospace product.As few or no failures occur during accelerated life test,it is difficult to assess reliability for long-life products with traditional life tests.Reliability assessment using degradation data of product performance over time becomes a significant approach.Aerospace electrical connector is researched in this paper.Through the analysis of failure mechanism,the performance degradation law is obtained and the statistical model for degradation failure is set up; according to the research on statistical analysis methods for degradation data,accelerated life test theory and method for aerospace electrical connector based on performance degradation is proposed by improving time series analysis method,and the storage reliability is assessed for Y11X series of aerospace electrical connector with degradation data from accelerated degradation test.The result obtained is basically consistent with that obtained from accelerated life test based on failure data,and the two estimates of product＇s characteristic life only have a difference of 8.7%,but the test time shortens about a half.As a result,a systemic approach is proposed for reliability assessment of highly reliable and long-life aerospace product.

关 键 词：electrical connector performance degradation RELIABILITY accelerated degradation test 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论] V442[自动化与计算机技术—计算机科学与技术]