This work focuses on the study of transient phenomena, in particular the non-uniformity and space–time variation of friction forces and surface temperature of a brake disc during stop-braking. Friction tests were conducted on a braking tribometer. The friction forces in the contact were measured using a 3D piezoelectric sensor, while the disc surface temperature was investigated by means of a high frequency fibre-optic two-colour pyrometer. An optical lap-top device was used to keep track of disc revolutions, and an original programme was written to plot the space–time variations of the measured parameters. This new original approach helps better understand the coupling between thermal and tribological phenomena occurring during braking.
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The present research work has been supported by the International Campus on Safety and Intermodality in Transportation, the Nord-Pas-de-Calais Region, the European Community, the Regional Delegation for Research and Technology, the Ministry of Higher Education and Research and the National Centre for Scientific Research.
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Kasem, H., Witz, J., Dufrénoy, P. et al. Monitoring of Transient Phenomena in Sliding Contact Application to Friction Brakes. Tribol Lett 51, 235–242 (2013). https://doi.org/10.1007/s11249-013-0147-5
- Transient phenomena
- Friction forces
- Surface temperature