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General Information
Editor-in-chief
Prof. Adrian Olaru
University Politehnica of Bucharest, Romania
I'm happy to take on the position of editor in chief of IJMO. It's a journal that shows promise of becoming a recognized journal in the area of modelling and optimization. I'll work together with the editors to help it progress.
IJMO 2019 Vol.9(1): 51-54 ISSN: 2010-3697
DOI: 10.7763/IJMO.2019.V9.683

Electrical Behavior of Connectors under Different Atmospheres

R. El Abdi, J. Labbé, and F. Le Strat
Abstract—Connector was composed of a female and male part which induced vibrations from the vehicle might lead to relative movements between these two parts. A relative movement of the contact zone between these two parts can lead to an irreversible mechanical degradation and an electrical perturbation by the formation of a third-body layer at the contact zone. This was the fretting corrosion phenomenon in electrical contact, which depends of the contact materials used, the atmosphere in which the connectors were used, and mechanical parameters (contact force, material hardness …). For economic reasons, the tin was used for coating to protect the substrate made of copper. In the air, the oxygen reacts with soft tin and forms a hard and brittle layer of tin oxides at the surface, which become remains under vibration stresses. Our study is about the measurement of electrical behavior of metallic connectors in two atmospheres: air and nitrogen as an inert gas. When a connector is tested in air atmosphere, a typical increase of the contact voltage amplitude was obtained. On the other hand, a nitrogen gas atmosphere leads to the contact voltage decrease. The change of the contact voltage highlights the ejection and the production of remains which were not so well understand. The study of the contact voltage provides new information about the degradation, to understand the fretting-corrosion phenomena.

Index Terms—Automotive connectors, fretting corrosion, electrical contact, nitrogen gas.

R. El Abdi and J. Labbéis are with Institut de Physique de Rennes. UMR 6251 UR1 CNRS- Université de Rennes1, 35042 Rennes Cedex, France (e-mail: relabdi@ univ-rennes1.fr).
F. Le Strat is with Entreprise Renault, DEA-TCM, 78084 Guyancourt, France

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Cite: R. El Abdi, J. Labbé, and F. Le Strat, "Electrical Behavior of Connectors under Different Atmospheres," International Journal of Modeling and Optimization vol. 9, no. 1, pp. 51-54, 2019.

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