铁道科学与工程学报2018，Vol.15Issue(4)：1023-1029,7.
铁路继电器温度加速寿命试验方案设计与分析
Design and analysis of temperature accelerated life test scheme for railway relay
摘要
Abstract
The railway relay is a key device in railway devices, its reliability and safety in operation is a necessary requirement to ensure that all kinds of automatic control equipment can work normally. In this paper, the main environmental factors affecting the normal operation of railway electrical equipment were analyzed, and the failure mechanism of mechanical properties and electrical characteristics of railway relays under thermal stress and vibration stress were investigated. In order to make rapid and accurate understanding of the reliability of the vibration and temperature stress under the action of life, an accelerated life test program was designed to apply four temperature levels under the condition of random vibration stress. The failure criteria of the mechanical and electrical characteristics of the railway relay were determined. Mechanical parameter, electrical parameter, contact action features and the three dimensional parameters of the surface topography are essential data for the failure criteria and analysis of the relay. Finally, the failure life distribution and reliability statistical model of the relay were determined according to the failure life characteristics of the railway relay. Moreover, the reliability analysis method of failure-free test data was further elaborated.关键词
铁路继电器/温度应力/振动应力/失效/可靠性/模型Key words
railway relay/temperature stress/vibration stress/failure/reliability/model分类
交通工程引用本文复制引用
李文华,王立国,赵正元,高继辉..铁路继电器温度加速寿命试验方案设计与分析[J].铁道科学与工程学报,2018,15(4):1023-1029,7.基金项目
河北省自然科学基金资助项目(E2016202206) （E2016202206）
河北省高等学校创新团队领军人才培育计划资助项目(LJRC003) （LJRC003）
