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On discovering relevant scales in surface roughness measurement--an evaluation of a band-pass method
J Berglund1, C Agunwamba, B Powers
1Sandvik Tooling, R & D Center Olofström, Olofström, Sweden. johan.berglund@sandvik.com
Abstract:
When characterizing surfaces and searching for correlations to functional properties, such as friction, finding the right scale of roughness for evaluation can improve correlations. However, in traditional roughness parameter analysis, a wide range of scales, or all scales of topography in the surface roughness measurements are evaluated together. In this study a multi-scale method using a series of band-pass filters is employed for finding scales of topography with strong correlations to friction.
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