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Article Dans Une Revue Frontiers in Mechanical Engineering Année : 2020

The Optical Aspect of Errors in Measurements of Surface Asperities Using the Optical Profilometry Method

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Résumé

The paper presents the impact of lighting type and direction on measurements of surface asperities using focus-variation microscopy. Particular attention was paid to the direction of lighting when using a light ring. It was pointed out that the lighting direction directly affects the values of the parameters Rt, Rz, and Rc. The article also presents the impact of a light polarizer on the surface topography parameters. It has been shown that the positioning of a sample with a regular and directed structure relative to the optical axis of the light polarizer affects the accuracy of mapping surface asperities. The largest differences were observed for Rz and Rt parameters. A method of using an external polarizer mounted on a focus variation microscope lens was also presented. Keywords: surface topography,

Dates et versions

hal-02891150 , version 1 (06-07-2020)

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Citer

Karol Grochalski, Michał Wieczorowski, Jihad H'Roura, Gaëtan Le Goïc. The Optical Aspect of Errors in Measurements of Surface Asperities Using the Optical Profilometry Method. Frontiers in Mechanical Engineering, 2020, 6 (12), ⟨10.3389/fmech.2020.00012⟩. ⟨hal-02891150⟩
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