Abstract
According to Persson's statement, the friction coefficient of a rubber is determined by the rubber's viscoelasticity and the surface property on multiscale asperities which can be represented by surface roughness power spectrum. In this study, we conduct friction testing for the two different dry surfaces and evaluate the Persson's mathematical model giving the friction coefficient that depends on sliding velocity and flash temperature. We also measure the rubber friction sliding on surface to which grease is applied and discuss about how the multiscale asperities might make an effect on friction.
