This standard was revised in 1997 and has replaced the previous version published in 1984. Several parameter definitions have been modified compared to the 1984 version and some parameters have been discarded. ISO 4287 defines general purpose parameters (i.e. not application-oriented). These parameters can be calculated on the primary profile (P-parameters), on the roughness profile (R-parameters) or on the waviness profile (W-parameters). They can be applied on profiles measured by stylus or optical profilometers, or on profiles extracted from areal measurements made by 3D profilometers or microscopes.
ISO 4288 defines the way parameters should be evaluated. The default procedures is to calculate a parameter evaluator on each sampling length of the profile, then provide the averaged value, except for the primary profile where only one value is calculated over the evaluation length.
ISO 13565 was published in 1996. It contains three parts:
- ISO 13565-1 defines a special filter which provides a better robustness against deep valleys compared to the standard Gaussian filter,
- ISO 13565-2 defines parameters from the material ratio curve,
- ISO 13565-3 defines other specific parameters from the probability curve.
This standard is the international version of the German automotive standards DIN 4776 and DIN 4777.
DIN 4777 also defined Rpk* and Rvk* as the upper and lower heights before correction with the equivalent area (these parameters are also calculated in Mountains).
This standard was published in 1996. It provides a way to define upper envelopes on profiles, a method to define motifs on the roughness or waviness profile and defines parameters calculated on motifs. This analysis method was originally developed by the French automotive industry in a CNOMO standard.
The CNOMO standard also defined additional parameters: SR, SAR, SW, SAW, Rke, Rpke, Rvke, Cr, Cl, Cf, which are provided in Mountains.
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Other relevant pages:
Metrology guide
Mountains® platform
MountainsMap Profile