Notes regarding the roughness filtering effects on wear predictions

Roughness measurements have been part of engineering for many decades. Direct contact scanning, white light and laser devices have been routinely used to provide 2D of 3D roughness data files and various roughness parameters. This has also enabled researchers to develop more and more advanced wear models, many of which incorporate contact mechanics; roughness filtering have also been systematically used to select the features of interest and although standards exists that regulate application of roughness filters for geometrical product specification, the impact of filtration upon wear is still subject of open research. This paper discusses some aspects regarding the digital filtering as applied to roughness data and the effect of roughness filtering on wear.