Reduced Valley Depth, Rvk, is the height on the Y-axis of a triangle with the same area as the BAC curve from the Mr2 point to the 100% point. Peak Height, Rpk*, is the distance between the highest profile peak and the intersection line of the surface ratio Mr1.
Don’t be fooled by Rvk! - Digital Metrology
Rvk is based on detecting a plateau via the “Rk Line.” The semi-finished surface doesn’t have a plateau so the line can float around. The details. To fully understand the problem with Rvk on …
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Surface roughness simplified - Griekspoor Thermal Coatings
Rvk: This value characterizes the valleys in the coating, which should have adequate depth (< 1.0µm) to provide sufficient lubrication without causing oil loss outside the cylinder.
Surface Finish Hybrid Parameters - Taylor Hobson
Rk is the Kernel Roughness Depth – the long term running surface which will influence the performance and life of the cylinder. (The depth of the Roughness Core Profile). Rvk is the Trough Depth – the oil retaining capability of the deep troughs which …
Core Roughness Along X, Y - Michigan Metrology
Rk, or Stylus (X, Y) Rk, the Core Roughness Along (X, Y), is a measure of the core (peak to valley) roughness of the surface with the major peaks and valleys established by Stylus (X, Y) Rpk and Stylus (X, Y) Rvk removed.
The set of functional parameters Rpk, Rk and Rvk [29]
... a 2D analysis, the three functional parameters, Rpk (the first region of the contact), Rk (the “working” region of the contact or the core height) and Rvk (the lubricant retention region...
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