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| Acceleration Test and Corrosion Simulation of Aviation Electrical Connectors in Marine Environment |
| Received:July 20, 2021 Revised:August 30, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.11.003 |
| KeyWord:electrical connector marine environment acceleration test corrosion simulation contact resistance COMSOL |
| Author | Institution |
| LIU Qi |
School of Basic Sciences for Aviation, Naval Aeronautical University, Yantai , China;Unit 92279 of the PLA, Yantai , China |
| YU Da-zhao |
School of Basic Sciences for Aviation, Naval Aeronautical University, Yantai , China |
| WANG Lin |
School of Basic Sciences for Aviation, Naval Aeronautical University, Yantai , China |
| XU Zhen-xiao |
School of Basic Sciences for Aviation, Naval Aeronautical University, Yantai , China |
| CHENG Xian-bin |
School of Basic Sciences for Aviation, Naval Aeronautical University, Yantai , China |
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| Abstract: |
| This paper studied the failure behavior and corrosion mechanism of aviation electrical connectors in the islands and reefs in South China Sea under conditions of service by accelerated test and finite element simulation. An environmental spectrum of accelerated corrosion test in marine environment was developed according to environmental data of typical aviation equipment in service in South China Sea, based on this environmental spectrum, the change behavior and mechanism of appearance corrosion, contact resistance, insulation resistance and voltage strength of aviation electrical connectors were researched under laboratory accelerated test conditions. The reasons of the change of contact resistance were analyzed, and a COMSOL finite element corrosion simulation model of the joint of the pin and socket was built to simulate and verify the corrosion behavior and mechanism of contacts. The results showed that the corrosion degree of the three types of electrical connectors was different. The appearance corrosion degree of the connectors with stainless steel shell was the lightest, but the corrosion degree of the inner metal clamps was the most serious, and the contact resistance fluctuated the most. The voltage strength and insulation resistance of all electrical connectors were obviously reduced. The direct cause of the increase of contact resistance was the serious corrosion in the capillary area at the junction of the pin and jack. The finite element model reproduced the process of corrosion interface development and corrosion product deposition. |
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