典型环境应力与电连接器间歇性接触失效关联关系分析

Analysis on Relationship Between Typical Environmental Stress and Intermittent Contact Failures of Electrical Connectors

电连接器的电接触性能易随温度、振动、腐蚀等环境因素变化,导致电连接器发生各种间歇性接触失效,该类失效具有自行恢复、随机性强、事后难以复现等特点,给装备可用度和任务成功性带来严峻挑战。本文针对温度、振动/冲击、盐雾等典型的环境应力导致电连接器间歇性失效问题开展研究,定性分析间歇性接触失效的环境因素。在此基础上,开展典型环境应力与电连接器间歇性接触失效关联关系的实验研究。结果表明:温变率、振动量级、冲击强度对电连接器间歇性接触失效影响最为明显,是工程中预防电连接器出现间歇性接触失效需要重点关注的环境应力参数。

The electrical contact performance of the electrical connector is easy to change with environmental factors such as temperature,vibration,corrosion,etc.,resulting in various intermittent contact failures of the electrical connector.Such failures have the characteristics of self-recovery,strong randomness,and are difficult to reproduce afterwards,which brings severe challenges to equipment availability and mission success.This paper studies the intermittent failure of electrical connectors caused by several typical environmental stresses such as temperature,vibration/shock,and salt spray,and qualitatively analyzes the environmental factors of intermittent contact failure.On this basis,an experimental study on the relationship between typical environmental stress and intermittent contact failure of electrical connectors is carried out.The results show that the temperature change rate,vibration magnitude and shock strength have the most obvious effects on the intermittent contact failures of electrical connectors,which are environmental stress parameters that need to be paid attention to in preventing intermittent contact failure of electrical connectors in engineering.