加速退化试验与加速寿命试验相结合的产品可靠性评估

提出加速退化试验与加速寿命试验相结合的对高可靠长寿命产品进行快速可靠性评估与寿命预测的新方法. 在建立合适退化轨迹模型的基础上，推出产品各应力下的失效分布函数. 根据这些分布函数利用数值仿真方法产生各应力下的伪失效寿命数据，利用加速寿命试验中的寿命试验数据的处理方法进行处理，然后外推出产品在正常应力下的失效分布函数. 该方法可以避免加速退化模型的分析和建模过程，在评估结果具有一定精度的情况下减少了研究工作量. 最后的实例计算表明了本文方法的有效性.

Product reliability assessment by combining accelerated degradation test and accelerated life test

A new method by combining accelerated degradation test and accelerated life test was proposed to evaluate the reliability of product with high reliability and long life quickly. Based on the establishing of appropriate degradation path model, failure distribution functions of product under different stresses were presented. Pseudo failure life time data were generated according to these functions by numerical simulation and later dealt with the method of accelerated life test. Then, the failure distribution function of product under usual stress was extrapolated. This method can avoid the process of accelerated degeneration model analysis and modeling and reduce the workload with the assessment result having certain accuracy. Finally, the numerical example indicated the validity of this method.