Abstract
Visualization of impact-friction surfaces of elastomers using a total reflection method were carried out in order to investigate the dynamics of elastomers on such surfaces. In the wet condition relative intensity at the contact center is gradually decrease toward that of the dry condition with waiting time while apparent contact area is not quite different from that of the dry condition. Stick-slip is generated on the impact-friction surfaces only in the wet condition. In that time, relative intensity at the contact center is higher than that of dry condition; this indicates that stick-slip is induced by water being between the contact surfaces.
