... by an improved cellular automaton model which show changes in three-dimensional topography, temperature of surface and coefficient of friction (COF) during wear process. Findings It is found that defects increase temperature of material surface. Besides, the materials with little defects have a smaller COF...

... of the grease topography has been measured in several tests and the tribological process is modelled. All investigations were done from an energy point of view. Interesting investigations dealing with break of a grease filament were also done by Larsson (1996) . He used a ceramic ball mounted...

...‐ring eccentricity, friction forces, friction coefficients and power losses. Lubrication Surface Topography Cylinders The problem of piston ring‐cylinder friction and wear has been considered to be of paramount importance in the automotive industry, as well as in the optimum design...