Download a PDF version of the Surface Texture Parameters Glossary
2D (Profile) Stylus Parameters
Stylus (X,Y) Pc
Stylus (X,Y) Pc the Peak Density Along (X,Y), measures the number of peaks per unit length in the X and Y directions respectively. A peak is defined as when the profile intersects consecutively a lower and upper boundary level set at a height above and depth below the mean line, equal to Ra, for the profile being analyzed.
The contour plot (A) shows a line through the center over which the profile (B) is selected to determine Pc..
Application
Stylus X Pc and Stylus Y Pc are
useful parameters for assessing the peak density (e.g. peaks/mm) along
a given direction. Applications involved in coating a surface, or when
fluid leakage/retention are of issue may make use of the Pc parameters
to optimize the surface texture design. Sometimes the combination of parameters
such as Rz with Pc will yield additional
information about the spacing and depth of dominant surface features that
may affect
the function of a component.
