Abstract
At the part 1 of this study, using a flat-belt tire testbed and investigated causal factors in the wear of tire tread under condition of small slip angle. To ensure the success of the experiment the accuracy of the testing devices were improved and the trial conditions were kept under close control. As a measure against sticky particles of worn rubber clinging to the surfaces of the Safety-walk and tires a uniform amount of mica powder was electrostatically coated onto the tire tread surfaces. Consequently, in a comparatively short time it was possible to ascertain measurable wear rates (abraded weight per unit travelling distance) as affected by a number of factors including: warm-up running, slip angle together with lateral force and lateral force coefficient, load, internal pressure, running speed and temperature. In this part 2, the mica powder coating device was improved further more, and measured the changes of frictional coefficient and linear wear rates (abraded weight per unit slip distance) and energetic wear rates (abraded weight per unit loss energy) according to slip velocity under condition of large slip angle.
