含多规格接触对的电连接器贮存寿命评估

Evaluation of Storage Life of Electrical Connectors with Multi-Specification Contact Pairs

摘要: 针对含多种规格接触对电连接器的贮存可靠性问题，以某型电连接器为例，在分析其失效机理的基础上设计了加速退化试验获取性能退化数据，提出了加速应力下含多种规格接触对的电连接器可靠性评估方法。首先通过分析其失效机理，得到了产品的性能退化模型，并且以温度作为加速应力设计了加速退化试验，同时以低应力水平为例计算两种规格接触对的退化模型参数以及寿命模型参数，其次结合加速模型，推导出两种规格接触对在正常应力下的可靠度函数，最后根据串联模型计算得到某型电连接器在正常应力下的可靠寿命。结果表明，提出的含多种规格接触对的可靠性评估方法实用、有效，实现了某多规格接触对电连接器的可靠性评估并且为其他含多规格接触对电连接器产品可靠性评估工作提供借鉴和参考。

Abstract: In order to solve the storage reliability problem of contact pairs with various specifications, an ac-celerated degradation test was designed to obtain the performance degradation data based on the analysis of the failure mechanism of a certain type of electrical connector, and a reliability evalua-tion method of electrical connectors with multiple specifications contact pairs under accelerated stress was proposed. Firstly, the performance degradation model of the product was obtained by analyzing its failure mechanism, and the accelerated degradation test was designed by taking tem-perature as the accelerating stress. Meanwhile, the degradation model parameters and life model parameters of the contact pair of two specifications were calculated by taking the low stress level as an example. Secondly, the reliability function of the contact pair of two specifications under normal stress was deduced by combining the acceleration model. Finally, the reliable life of a certain type of electrical connector under normal stress is calculated by series model. The results show that the proposed reliability evaluation method with multi-specification contact pairs is practical and effec-tive. It realizes the reliability evaluation of a certain multi-specification contact pair electrical con-nector and provides a reference for the reliability evaluation of other electrical connector products with multi-specification contact pairs.