RT info:eu-repo/semantics/article T1 Metrology Benchmarking of 3D Scanning Sensors Using a Ceramic GD&T-Based Artefact A1 Cuesta González, Eduardo A1 Meana Díaz, Víctor Manuel A1 Álvarez Álvarez, Braulio José A1 Giganto Fernández, Sara A1 Martínez Pellitero, Susana A2 Ingenieria de los Procesos de Fabricacion K1 Ingeniería industrial K1 3D optical scanner K1 Benchmarking K1 Metrological evaluation K1 GD&T-based artefac K1 Reverse engineering K1 3310.05 Ingeniería de Procesos AB [EN] The use of non-contact scanning equipment in metrology and in dimensional and geometric inspection applications is increasing due to its ease of use, the speed and density of scans, and the current costs. In fact, these technologies are becoming increasingly dominant in the industrial environment, thus moving from reverse engineering applications to metrological applications. However, this planned transfer requires actions to ensure the achievable accuracy by providing traceability of measurements. In the present study, a comparison between the devices is carried out and a specific standard artefact is designed, equipped with multiple ceramic optically friendly entities, and allowing a wide variety of geometric dimensioning and tolerancing (GD&T). Four different 3D scanning sensors are used in the experimentation. Three of them are based on laser triangulation, and the fourth is a structured blue light sensor (fringe pattern projection). The standard artefact is calibrated with a high accuracy, using a coordinate measuring machine (CMM) and probing sensors. With this CMM, reference values of multiple predefined GD&T are obtained. The evaluation methodology maximises the accuracy of each device in measuring the dimensions of the artefact due to the good dimensional (milling and turning), surface (control of machining variables), and the dimensional and spatial distribution characteristics. The procedure also includes the same treatment of the captured point clouds (trimming, filtering, and best-fit algorithm, etc.) in each of the four 3D scanning sensors considered. From this process, very reliable measurements of the maximum achievable accuracy of each device (deviations from the CMM measurements) are finally obtained, and a multi-characteristic comparison between the four sensors is performed, also with high reliability. PB MDPI LK https://hdl.handle.net/10612/20534 UL https://hdl.handle.net/10612/20534 NO Cuesta, E., Meana, V., Álvarez, B. J., Giganto, S., & Martínez-Pellitero, S. (2022). Metrology Benchmarking of 3D Scanning Sensors Using a Ceramic GD&T-Based Artefact. Sensors, 22(22). https://doi.org/10.3390/S22228596 DS BULERIA. Repositorio Institucional de la Universidad de León RD Jul 11, 2024