步进应力加速寿命试验数据处理方法在产品定寿试验中的应用

摘要

Objective To straighten out data processing method of step-up stress accelerated life test and promote extensive application of step-up stress accelerated life test.Methods The life expectancy of the product under normal stress level was estimated according to estimation of product life distribution,conversion of test data,establishment of regression model,estimation of model parameter and other steps.Results The data processing method of step-up stress accelerated life test was applied according to test data of a product.Conclusion Steps for processing method of test data are established and suggestions on design of step-up stress accelerated life test are proposed.%目的 理顺步进应力加速寿命试验数据处理方法,促进步进应力加速寿命试验的广泛应用.方法 通过产品寿命分布类型估计、试验数据转换、回归模型建立,模型参数估计等步骤,评估产品在正常应力水平下的寿命指标达到情况.结果 利用某产品试验数据对步进应力加速寿命试验数据处理方法进行了应用.结论 建立了试验数据处理方法步骤,针对步进应力加速寿命试验的设计提出了建议.