Fretting wear of low current electrical contacts: Quantification of electrical endurance

Fouvry, S.; Laporte, J.; Perrinet, O.; Jedrzejczyk, P.; Graton, Olivier; Alquier, O.; Sautel, J.

doi:10.1109/holm.2017.8088056

Cited by 10 publications

(2 citation statements)

References 21 publications

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“…The coefficient of friction can be reduced and the friction energy dissipation causing the wear of the surface also decreases. Thus, the wear rate decreases [9]. When applied in the numerical simulation, with the consideration of the formation of the third bodies, the simulated results agree better with the measured results [10].…”

supporting

confidence: 56%

An Improved Calculation Model for the Prediction of the Wear of Coated Electrical Contacts

Yuan

Song

2019

Technologies

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To connect terminals in a cyber-physical system, large quantities of electrical contacts are used. In order to guarantee a high reliability of the system, the lifetime of the electrical contacts should be very long. Thus, it is of great importance to understand the failure mechanism and then to predict the lifetime of the electrical contacts. For the applications under high thermal and/or mechanical loads, noble plating is a good choice, considering its inertness to oxidation. For noble plating, one of the most critical failure mechanisms is the fretting wear. Wear debris generated in the contact area, acting as the third bodies, will greatly influence the further wear behavior and electrical performance. In this study, the state of the art regarding third bodies is firstly reviewed, and then the influence of the third bodies on the wear and electrical performance is investigated, from the aspects of lifetime and the element distributions in contact area. Finally, an example of prediction of the wear of noble plating is shown with the consideration of the third bodies. Based on this study, by involving the third bodies, the wear of noble plating can be predicted with a higher accuracy.

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supporting

confidence: 56%

An Improved Calculation Model for the Prediction of the Wear of Coated Electrical Contacts

Yuan

Song

2019

Technologies

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“…In this report we describe this development where, additionally, its multi-sensing capability has been expanded by the incorporation of electrical contact resistance (ECR) measurement during the wear tests. Although the benefits of ECR measurement have been criticized [10] it has generally proved extremely useful, as in fretting tests [11][12][13][14][15]. Echeverrigaray and coworkers reported that ECR monitoring provided a valuable tool for detecting premature wear of an electrically non-conductive DLC coating sliding against steel in a pin-on-disk test by dielectric breakdown [16].…”

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confidence: 99%

Friction and electrical contact resistance in reciprocating nano-scale wear testing of metallic materials

Beake

Harris

Liskiewicz

et al. 2021

Wear

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Reciprocating contacts occur in a wide variety of practical wear situations including hip joints and electrical contacts. In developing tribological tests for candidate materials with improved durability in these contacts it is beneficial that the contact conditions (e.g. sliding speed) can be reproduced. Hence, a fully instrumented capability for rapid high-cycle linear reciprocating nano-scale wear tests has been developed. It is multi-sensing with high data 2 acquisition measurements of probe displacement data, friction, cumulative frictional energy dissipation and electrical contact resistance. In comparison with other nanoindenters the design has the high level of lateral rigidity which provides sufficient stability to perform nano-or micro-scale wear tests for extended duration (e.g. several hours, up to 300 m sliding). In this study, reciprocating nano-wear tests with diamond probes have been performed on the biomedical alloys Ti6Al4V and 316L stainless steel, and with electrically conductive metallic probes on gold and silver alloys. The stainless steel exhibited a ductile response with low friction throughout the load range. At higher loads on Ti6Al4V, there was an abrupt transition to higher friction and fracture-dominated wear after ~20 cycles.Improved detection of the onset of wear and the subsequent failure mechanisms sliding against conductive probes was possible by a multi-sensing approach simultaneously monitoring friction and electrical contact resistance (ECR). Changes in ECR exhibited a complex correlation with changes to the measured friction. The reciprocating tests of noble metal-noble metal contacts (Au-Au and Ag-Ag) showed much longer endurance than gold vs. steel contacts although occasional isolated failures were observed. A new approach for the analysis of repetitive nano-scratch test data was also developed enabling improved data mining.

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Study on the influence of speed in DRM of SF6 circuit breaker

Liu

Zhang

Qin

et al. 2020

International Journal of Electrical Power & Energy Systems

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Fretting wear of low current electrical contacts: Quantification of electrical endurance

Cited by 10 publications

References 21 publications

An Improved Calculation Model for the Prediction of the Wear of Coated Electrical Contacts

An Improved Calculation Model for the Prediction of the Wear of Coated Electrical Contacts

Friction and electrical contact resistance in reciprocating nano-scale wear testing of metallic materials

Study on the influence of speed in DRM of SF6 circuit breaker

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