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Materials and contact shape studies for automobile connectors development

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4 Author(s)
Queffelec, J. ; Dept. de Phys. Atomique et Moleculaire, Rennes I Univ., France ; Ben Jemaa, N. ; Travers, D. ; Pethieu, G.

In automobile contacts, nominal contact resistance is required with low-cost materials such as copper alloys working in a wide range of currents (1 μA to 50 A) and forces (1 N to several tens of newtons). The contact resistance of materials is studied in the initial state versus load, both in the inserting phase and during fretting motion. A specific test machine has been developed which allows statistical measurements under different initial conditions: base materials, contact shapes, and loads. The main results are the contact resistance law versus load: Rc=kcFc -n and the insertion force law Fi=k iFcm where the constants kc, ki, n, and m are correlated with material resistivity and contact shape characteristics

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Components, Hybrids, and Manufacturing Technology, IEEE Transactions on  (Volume:14 ,  Issue: 1 )