基于比例危险模型的产品竞争失效分析

Reliability analysis with competing failure models based on PHM

突发型失效与退化型失效共存的竞争失效问题在实践中大量存在,一般情况下突发失效是受退化量大小影响的。文中利用比例危险模型分析了突发失效与退化量的关系,给出了竞争失效的一般模型及模型的参数估计方法,最后利用所给模型对强激光装置所用的金属化膜脉冲电容器进行了可靠性分析。

Competing risks involving catastrophic and degradation failures are becoming increasingly common in practice. Generally, the catastrophic failure is dependent on the degradation measure. The paper analyzes the dependence of catastrophic failure on degradation failure by proportional hazard model, and presents a general model of competing failure and a method of estimating parameters. The methodology is demonstrated and validated in the reliability analysis of metallized film pulse capacitors.