The evaluation length is used to define RSm, the mean spacing of profile elements. On surfaces with periodic or pseudo-periodic themes, such as turned or structured surfaces, this parameter is interesting. In such situations, RSm will roughly estimate their spacing. On a random surface texture, RSm is useless. It was originally calculated using the sample length, but it is now advised to use the evaluation length.

Rdq, the assessed profile’s root mean square slope, is determined by the sampling size. Rdq is a starting point for tackling surface complexity. Smooth surfaces have a low value, whereas surfaces with microroughness are rougher and have higher values.

Peak count number, or RPc. Appeared in Amendment 1. gives the peak density per unit of length.

In summary, NextGen’s NG-SR400-T System Surface Roughness Tester can display Spatial and Hybrid Parameters.

Click here to obtain a personalized quote!