Rsw, Wsw, Psw – Dominant Spatial Wavelength

The Rsw surface texture parameters help locate a dominant spacing, or spatial wavelength, in surface roughness. That texture spacing might lead to noise, leaks, or other performance issues. The same calculation can be applied to the waviness profile (Wsw) or the primary profile (Psw). View more surface texture parameters in our Texture Parameter Video library.

Rdt, Wdt, Pdt – Maximum Absolute Gradient

The Rdt surface texture parameter measures the areas of steep slopes in the roughness profile. Controlling local slopes on a surface can be important for things like gaskets sealing, bearing noise, etc. The dt calculation can also be performed on the waviness profile (Wdt) and primary profile (Pdt). View more surface texture parameters in our … Read more

Rdr, Wdr, Pdr – Developed Length Ratio

The Rdr parameter, Developed Length Ratio, is a measure of the distance of the path you’d “walk along” the roughness profile vs the measured distance in x. The same calculation can be applied to the waviness profile (Wdr) or primary profile (Pdr). View more surface texture parameters in our Texture Parameter Video library.

Rdq, Wdq, Pdq – Root Mean Square Gradient

The Rdq surface texture parameters is a measurement of slopes in the surface roughness profile, which may impact surface appearance and how it reflects light. The same calculation can be applied to the waviness profile (Wdq) or the primary profile (Pdq). View more surface texture parameters in our Texture Parameter Video library.

Rdl, Wdl, Pdl – Developed Length

The Rdl surface texture parameter is the Developed Length of the roughness profile. Thie Rdl parameter looks at the length we’d travel along surface texture as if we were walking along a shoreline. The same calculation can be performed on the waviness profile (Wdl) or primary profile (Pdl). View more surface texture parameters in our … Read more

Rda, Wda, Pda – Arithmetic Mean of Absolute Gradient

Rda is the arithmetic mean of absolute gradient for a surface roughness profile. It is a description of slopes along a surface, and it tells us how a surface might appear or how light may reflect off of it. The Da parameter describes the slopes on the surface. While Rda is calculated from the roughness … Read more