Abstract
Due to repetitive micro-displacements, the fretting phenomenon was defined as an electrical and mechanical degradation of the electrical contact interface in telecommunications and more recently in power automotive connectors. Commonly, the electrical degradation was quantified by the increase of contact resistance deduced from the contact voltage. This work aims to address the analysis of the change of contact temperature and the contact voltage during the three successive fretting phases at low and high level contacts. U-shape samples of cooper with a tin protective coating were used and fixed on a vibration system.
Indeed, the analysis of the voltage fluctuations in term of level and time appearance was a very useful tool to analyze in-situ the fretting behavior. Upon the analysis of experimental data, it was found that the first phase corresponds to the phase of sample self-cleaning and to the beginning of the fretting phenomenon; the second phase corresponds to a rapid increasing of the fretting phenomenon. Finally, at the end of the second phase, the fretting phenomenon is stable and the measured contact temperature reached 150 °C.
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References
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El Abdi, R., El Mossouess, S., Benjemâa, N., Carvou, E., Doublet, L. (2018). Fluctuation of Contact Voltage During Fretting Phases. In: Gheorghe, G. (eds) Proceedings of the International Conference of Mechatronics and Cyber-MixMechatronics - 2017. ICOMECYME 2017. Lecture Notes in Networks and Systems, vol 20. Springer, Cham. https://doi.org/10.1007/978-3-319-63091-5_1
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DOI: https://doi.org/10.1007/978-3-319-63091-5_1
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