This study investigated the surface topographical changes during running-in. A theoretical model, which is composed of Johnson translatory system and a microscopic wear model, was used to describe the changes of surface roughness during running-in for general surfaces. Running-in tests were conducted for engine bores with different surface height distributions in order to understand surface topographical changes and validate the theory. Experimental results show that the theoretical model provides a good indication of changes of surface topography for surfaces with different types of initial height distributions.

Issue Section:
Technical Papers
Keywords:
surface roughness, wear, wear, surface height distribution, surface roughness, running-in
Topics:
Engines, Surface roughness, Wear, Density
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