Citation

Chang WR, Matz S. Safety Sci. 2000; 36(1): 19-33.

Copyright

(Copyright © 2000, Elsevier Publishing)

DOI

unavailable

PMID

unavailable

Abstract

It is known that surface roughness affects friction, but it is unclear which surface characteristics are better correlated with friction. Moreover, the filter process used in surface roughness measurement affects the values of surface parameters and, therefore, affects surface representations. The effect of filter selection on the surface parameters and their correlation with the measured friction was investigated in this study. Surface roughness on unglazed quarry tiles was measured. Friction was measured with two commercially available slipmeters. The results indicated that some parameters, such as Rsk, were significantly affected by the filter type, while some other parameters, such as [Delta]a were significantly affected by the band width. The filter type 2CR PC could generate surface parameters that had slightly higher linear correlation coefficients with friction than two other filter types, ISO 2CR and Gaussian, and the filter band width of 1000 is not recommended. The surface parameter Rpk had a very high correlation with friction, but it was highly location dependent and somewhat ambiguous in how it was generated. The surface parameter Rpm had a very small location dependence and a very high correlation coefficient. Therefore, the surface parameter Rpm was a better choice for an indicator of surface friction.