Roughness Parameters for Evaluating Sanded Surface of Hardwood

Parameters corresponded to tactile roughness

The quality of the sanded surface of wood and wood based materials is often classified by visual and tactile sense. The purpose of this study is to determine the roughness parameters corresponded to the tactile roughness to the automatic controll of the machining or the evaluation of wood surface.
Ra,Ry,Rz and tactile roughness
Fig.1 Relationship between Arithmetical mean deviation (Ra), Ten point height of irregularities (Rz), and Maximum height (Ry) and tactile roughness.
Rpk and tactile roughness Fig.2 Relationshio between Reduced peak height (Rpk) and tactle roughness.

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