基于随机冲击的相关竞争失效可靠性评估  

Reliability Estimation Based on Random Shocks Subject to Dependent Competing Failure Processes

作　　者：孙志旺 梁玉英[1] 潘刚[1] 张国龙[1] 

机构地区：[1]军械工程学院,石家庄050003

出　　处：《火力与指挥控制》2015年第6期132-135,共4页Fire Control & Command Control

基　　金：国家自然科学基金资助项目(61271153)

摘　　要：针对电子产品在工程实践中受随机冲击应力的影响及多失效模式的问题,以累积冲击和极限冲击来描述产品的冲击过程,考虑失效模式相关性并建立了随机冲击下产品竞争失效模型。以具有自然耗损和突发耗损特点金属化膜脉冲电容器为对象,进行了可靠性对比分析,验证了模型的合理性和有效性,为遭受复合应力影响的电子产品的可靠性评估提供了一种新方法。Aiming to resolve the impact of random shocks and the problem of multiple failure modes among the electronic products in engineering practice,cumulative shock model and extreme shock model are used to describe the process of the product. The dependent of failure modes is taking in to account to establish the competing failure mode under random shocks. The metallized film pulse capacitor with natural wear and abrupt wear characteristics is employ to estimate the life,and the comparison is used to analyze it. The rationality and validity is verified after the estimation. The essay provide a new method to estimate the impact of the electronic products suffering compound stresses.

关 键 词：随机冲击 相关竞争失效 金属化膜脉冲电容器 可靠性评估 

分 类 号：TB114.3[理学—概率论与数理统计]