共查询到18条相似文献,搜索用时 156 毫秒
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航天用电连接器的接触可靠性研究 总被引:3,自引:1,他引:2
接触可靠性是保证航天用电连接器正常工作的关键。文章结合近年来在检验及使用过程中出现的多起航天用电连续器接触失效实例,在阐明其失效机理的基础上分析了影响电连接器接触可靠性的各种因素,并对目前分离力等接触可靠性检查方法进行了研讨。 相似文献
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航天用电连接器的失效分析 总被引:2,自引:2,他引:2
电连接器的质量和可靠性直接关系到卫星,飞船,导弹等重点型号产品的成败,是整个系统工程十分重要的组成部分,文章较详细地总结和分析了航天用电连接器的各种常见失效和模式和失效机理,并提出了改进和提高其质量和可靠性的若干建议。 相似文献
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结合公司多年来在可靠性方面的实践,阐明了电连接器可靠性设计的基本原则,论述了可靠性工作中应注意的问题,强调了形成适用于电连接器的可靠性设计程序和规范的重要性。 相似文献
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本文从流体连接器的材料选择、结构设计、表面处理工艺和安装使用方面,分析了流体连接器漏液故障现象产生的原因.阐述了金属合金材料应力腐蚀三要素,应力腐蚀机理,并对失效机理进行试验验证.目的是总结流体连接器在结构设计、材料选择、表面处理和安装应用等方面教训,提高产品可靠性. 相似文献
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Crimped and mechanically bolted aluminum and copper connectors are commonly used for terminating industrial electrical power cables with ratings up to 600 V. Aluminum connectors are available for use with aluminum and copper conductors, and copper connectors are available for use with copper conductor only. The performance of copper and aluminum connectors was compared by conducting accelerated aging under corrosive environmental conditions. The testing consisted of 2000 h of cyclic salt fog environmental exposure, in conjunction with periodic electrical current burst testing. The connectors were evaluated by comparing the change in resistance of the test samples as the test progressed 相似文献
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A new approach to the prediction of the reliability of electrical systems is presented. In this approach a graph trace based reliability analysis of electric transmission and/or distribution systems is used. The systems are modeled using containers with iterators, where the iterators manage graph edges and are used to process through the topology of the graph. The analysis provides a means of computationally handling dependent failure rates and cascading failures. The effects of weather, time-varying loads, equipment age, wetness, and dependent failures associated with repaired components are considered. A sequential Monte Carlo simulation is used to evaluate the reliability changes for different system configurations, including distributed generation and transmission lines. Historical weather records and loading are used to update the component failure rates on-the-fly. Simulation results are compared against historical reliability field measurements. 相似文献
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The paper presents an approach to incorporating the aging failure mode and multiple capacity states of a HVDC system in power system reliability assessment. Subcomponents in HVDC converter stations have a much shorter mean life compared to an ac line or cable. When their age approaches the mean life, the failure rate due to aging increases greatly and it is necessary to include their aging failure mode in the assessment. The modeling method presented for multiple capacity states includes three reliability block networks. Probabilities of a HVDC system being at the full, derated and zero capacities can be easily calculated using the three reliability networks. Once the state probabilities are obtained, the HVDC system can be represented using a three-state model in overall power system reliability evaluation. An actual example in a utility is given to demonstrate the application of the presented approach in a power supply system with an aged HVDC link. 相似文献