基于步退应力加速寿命试验的静环组件贮存寿命评估

摘要

The static ring components require a long period of time to do accelerated storage test. To overcome this difficulty, a step-down-stress Accelerated Life Test (ALT) method was introduced in this paper. The principle and flow of this method were presented. Combined with Arrhenius model, maximum likelihood estimation was applied to evaluate storage life reliability of the product. Finally, according to the results of accelerated storage test, the storage life of static ring components was determined in a shorter test time.%针对某型静环组件加速贮存试验时间过长的问题，设计了步退应力加速寿命试验方法。陈述了该方法的基本原理和步骤，结合Arrhenius模型，采用极大似然估计法进行产品贮存寿命和可靠性的评估。最后根据加速贮存试验结果，在较短时间内评估得到静环组件的贮存寿命。