研削用試料の表面粗さパワースペクトルとタイヤゴムの摩耗・摩擦の関係

抄録

Understanding of rubber friction on a rough surface is one of the fundamental issues to develop the integrated engineering design method for tires and roads. In this study, we measure the power spectral density of surface roughness, called surface roughness power spectrum, for the three types of abrasive specimens and identify the surface parameters featuring the self-affine fractal surfaces. Using the measured surface specimens, we demonstrate the friction tests for tire rubber to control the surface temperature and sliding speed. To compare among the three master curves obtained from the measured friction coefficients, we investigate the relationship between the speed dependency and the power spectra. Based on the experiment data of the friction and abrasion tests, we discuss how the hysteresis effect of the rubber and the other friction factors contribute to the friction force.