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

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.