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1. Surface finishes and form deviations
To characterize the geometry of a surface, we'll be interested in the variations of the z (x,y ) dimension, locally normal to the mean surface, as a function of the x and y positional parameters on the surface, at different scales.
On the scale of the part as a whole, we are interested in deviations of the average surface from an ideal surface of simple shape: plane, sphere, cylinder or cone, for example. In this study of shape deviations, we will ignore roughness and define a local average surface.
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Surface finishes and form deviations
Two-dimensional spatial frequencies
References
Standardization
The Afnor catalog can be consulted online: http://www.afnor.fr
- Spécification géométrique des produits (GPS) - État de surface : méthode du profil - Caractéristiques métrologiques des filtres à phase correcte. - NF EN ISO 11562 - Mars 1998
- Spécification géométrique des produits (GPS) - État de surface : méthode du profil - Paramètres...
Manufacturers
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ADE Phase Shift http://www.phase-shift.com
EXFO Burleigh http://www.exfo.com
FEI Company http://www.feicompany.com
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