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A fixed-point observation method was designed to research the dynamic tribologieal performance of one certain resin-based friction materials.The friction test was performed through a constant speed friction tester under various temperature conditions.It was found that the dynamic tribological performance of materials has a good consistency with the dynamic evolution of worn surfaces.At lower temperatures,the friction coefficient and wear rate were constant,resulted from the stable worn surfaces.At higher temperatures,the friction coefficient increased gradually,while the wear rate decreased,due to the increasing contact area and Fe concentration.A fade occurred above 250 ℃,which can be explained by the degradation of binders.