航天继电器贮存过程吸合时间退化机理研究

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Abstract As a hermetically sealed electrical component, the storage reliability of aerospace electromagnetic relay (EMR) plays an important role in weapons, such as missiles. How to test and evaluate the performance degradation and storage reliability of aerospace EMR are widely concerned by both relay consumers and manufactures. Through the storage accelerated degradation testing of a certain type of aerospace EMR based on a self designed testing system, the degradation data of pick-up time were obtained and analyzed. According to the analysis of degradation mechanism of pick-up time in long-term storage, reed force degradation caused by stress relaxation was verified to be the main cause. The results of both simulation and testing show that pick-up time is approximate linear relation to reed initial force. Then pick-up time was chosen as the indication of reed stress relaxation degradation. Meanwhile, the pick-up time degradation model under high temperature was built, and it could provide the basis for latter aerospace EMR storage reliability assessment and life prediction.

Key words： Aerospace electromagnetic relay storage pick-up time stress relaxation

Received: 06 April 2016 Published: 20 June 2017

PACS:

TM581.3

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	Articles by authors
	Ye Xuerong
	Lin Yigang
	Huang Xiaoyi
	Zhai Guofu

Cite this article:

Ye Xuerong,Lin Yigang,Huang Xiaoyi等. Research on Storage Degradation Mechanism of Aerospace Electromagnetic Relay Pick-Up Time[J]. Transactions of China Electrotechnical Society, 2017, 32(11): 173-179.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I11/173

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