Abstract
Digital processing of the recorded point clouds on innovative surfaces could facilitate the operator’s planning of the metrological process and give more freedom in the assessment of the surface texture. The current state of knowledge about surface characteristics, precision and quality of measurements and especially the repeatability of measurements – not only in the laboratory environment but also in the industry pose a big challenge. The paper presents research works related to the identification of the impact of the method of acquisition point clouds using digital data processing on surface texture. The main assumption of the paper was to carry out, according to the prepared plan of the experiment, the series of sample measurements with the use of the optical measuring systems AltiSurf A520 in the Laboratory of Surface Topography at the West Pomeranian University of Technology in Szczecin. The next task was to determine the impact of the digital data processing strategy in order to identify the significance of the impact (conditions and methods of filtration), which in practice largely determines the repeatability and reproducibility of the parameter values of the geometry surface structure.
Highlights
Digital processing of registered point clouds on innovative and precise surfaces enables operators to develop a planning process for metrological procedures and gives more freedom in the assessment of surface texture
Registration of the point clouds without shape errors and surface roughness allows resigning from the digital processing, while simultaneously, the determined surface topography parameters become free from an accidental impact of the operator [14]
In the research conducted in the Surface Topography Laboratory (LTP) at the West Pomeranian University of Technology (ZUT) in Szczecin, we focused on specifying conditions for acquiring a point cloud for the surface of metal objects
Summary
Digital processing of registered point clouds on innovative and precise surfaces enables operators to develop a planning process for metrological procedures and gives more freedom in the assessment of surface texture. The aim of this study was to identify the method for processing the point cloud using the digital data processing according to a prepared experiment plan of measurements on the AltiSurf A520 optical measuring instrument in the Surface Topography Laboratory at the West Pomeranian University of Technology in Szczecin. The task was to determine the impact of digital data processing strategies (conditions and methods of filtration), which in practice means the repeatability and reproducibility of the determined values of surface texture parameters [12]. Based on the obtained results we defined the coefficient of variation for individual experimental setups with the aim of investigating the significance of digital data processing method on differentiation of surface texture amplitude parameters. The experiment was carried out in variable but controlled environmental conditions using modern AltiSurf A520 measuring equipment from Altimet (Fig. 1) and the surface roughness pattern with C3 type sinusoidal grooves (according to PN-EN ISO 4536-1) Hommel-Etamic No 3442
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