Notepad Series Video: Fake Peaks and Filters

Are the peaks that you are seeing in your surface texture measurement real? In some cases the peaks in your graphs may not be real at all…they may be artifacts of the filtering operation. False peaks can make you think something’s wrong, which can lead to unnecessary rework or even scrapping of good parts.

In this video we look at how the filtering process can sometimes lead to the generation of peaks that aren’t there in reality. We also look at a better filter–the Robust Filter–that can provide more accurate representations of the roughness and waviness.

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