Changes in the micro-geometry of a rolling contact

The effect of the changes in the micro-geometry in a rolling contact on wear processes like running-in is of great interest. Recently, a wear measurement system-based on the comparison of local changes on the surface topography in a rolling contact has been developed. Some results of the rolling experiments are presented. In particular, the influence of surface roughness, asperity layout and hardness on deformation mechanisms is studied. The shakedown and deformation mechanisms in rolling contacts are discussed.