Experimental study of the real time change in surface roughness during running-in for PEHL contacts

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Original languageEnglish
Pages (from-to)140-146
Journal / PublicationWear
Issue number1-2
Publication statusPublished - Aug 2000


An optical system for the implementation of a new real time roughness measuring technique was incorporated to a two-disk machine. The change in surface roughness during the running-in stage of partial elastohydrodynamic lubricated wear tests was measured in a real time mode. The results were compared with the experimental data, which were measured, in a conventional manner, at discrete intervals of time by stopping the wear test. The apparent discrepancies reveal that the wear is enhanced by the stop/start actions. The effects of different initial roughness, sliding/rolling ratios and loading on the change in surface roughness during lubricated running-in tests were also studied with the current set up. (C) 2000 Published by Elsevier Science S.A.

Research Area(s)

  • Running-in, Surface roughness