3D Surface Roughness and Wear Measurement, Analysis and Inspection

How Do We Define Average Roughness?

Average Roughness—in surface texture measurement, it’s one of the most frequently specified surface roughness parameters. In this video we look at how average roughness (Ra, or Sa) is calculated. We look at what Ra can — and can’t — tell us about a surface. And, we discuss the differences between Ra, Sa, and related parameters that you may encounter in surface texture analysis software.