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A Novel Measurement of Dynamic Friction

Journal Article
ISSN: 1946-3995, e-ISSN: 1946-4002
Published October 12, 2008 by SAE International in United States
A Novel Measurement of Dynamic Friction
Citation: Wang, S. and Woodhouse, J., "A Novel Measurement of Dynamic Friction," SAE Int. J. Passeng. Cars - Mech. Syst. 1(1):1172-1180, 2009,
Language: English


A tribometer, based on a pin-on-disc machine, uses a PZT drive to produce small sinusoidal fluctuations of sliding speed. The frequency and amplitude of these fluctuations can be controlled, and the dynamic response measured. Preliminary test results show that the dynamic friction variation is influenced by the contact materials, normal force, oscillation frequency and steady sliding speed. The variation of friction force amplitude and phase with frequency gives clues about the underlying state variables determining the friction. Modelling studies illustrate the expected behaviour for idealized friction laws governed by, for example, sliding speed, contact temperature, and “rate-state” laws.