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| Faliure Analysis of Electrical Connectors Connectors on Naval Aircraft |
| Received:May 16, 2019 Revised:June 12, 2019 |
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| DOI：10.7643/issn.1672-9242.2019.12.005 |
| KeyWord:electrical connectors failure corrosion fretting insertion and extraction |
| Author | Institution |
| WANG Teng |
Naval Aviation University, Shandong, Yantai , China |
| YU Da-zhao |
Naval Aviation University, Shandong, Yantai , China |
| ZHU Meng |
AVIC China Aero-Polytechnology Establishment, Beijing , China |
| XIAO Chu-wan |
Naval Aviation University, Shandong, Yantai , China |
| LI Ming |
AVIC China Aero-Polytechnology Establishment, Beijing , China |
| WANG Si-huan |
Naval Aviation University, Shandong, Yantai , China |
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| Abstract: |
| Objective To conclude the main reasons of connector failure. Methods Three types of typical electrical connectors for naval aircraft were studied by macro and micro morphology observation. SEM and EDS were used to analyze the microstructure, micro component and chemical composition of surfaces on shell and socket contact. Results Corrosion and wear were the main causes of connector failure in out-field. The electrical connectors had local corrosion to a certain extent. Obviously promotion to corrosion came from the dust and sea salt particles accumulated on the surfaces. The deviation of concentricity caused by incorrect insertion and extraction and fretting acted together, generating the local corrosion. Conclusion Incorrect insertion and extraction, fretting and local corrosion were the three main factors causing the performance of electrical connectors degrading to failure. |
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