Effect of Space Environment on the Reliability of Conductive Adhesive Joints

Lianfeng Ren, Yanpei Wu, Le Zhang, Yi Gao, Xu Long

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

Conductive adhesive bonding technology is widely used in the lightweight microwave components of satellite payloads. In the space environment, the conductive adhesive is subjected to the coupled action of irradiation and temperature cycling. In this paper, the 60Co γ-ray radiation test and temperature cyclic accelerated life test were carried out for the conductive adhesive joints. Subsequently, the reliability of the conductive adhesive joints for aerospace applications was investigated to examine the shear strength and electrical resistivity. The results of irradiation test show that the electrical conductivity and mechanical properties of the conductive adhesive joints are not affected when they are irradiated by < 120 Krad (Si). In the accelerated life test with temperature cycling, the cumulative failure ratios under different cycles are obtained by monitoring the change of electrical resistivity, and the Weibull distribution model of conductive adhesive joints is established. By adopting the Coffin-Manson model, the shortest average life of the conductive adhesive joint in the geostationary satellite is about 32.6 years, and the minimum reliability is found to be 97.8% when the in-orbit life is 8 years.

源语言英语
主期刊名Computational and Experimental Simulations in Engineering - Proceedings of ICCES 2023—Volume 3
编辑Shaofan Li
出版商Springer Science and Business Media B.V.
975-983
页数9
ISBN(印刷版)9783031449468
DOI
出版状态已出版 - 2024
活动29th International Conference on Computational and Experimental Engineering and Sciences, ICCES 2023 - Shenzhen, 中国
期限: 26 5月 202329 5月 2023

出版系列

姓名Mechanisms and Machine Science
146
ISSN(印刷版)2211-0984
ISSN(电子版)2211-0992

会议

会议29th International Conference on Computational and Experimental Engineering and Sciences, ICCES 2023
国家/地区中国
Shenzhen
时期26/05/2329/05/23

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