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Vol.22, No.3, 2022, pp. 288–292 |
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DIMENSIONAL ACCURACY OF PARTS OBTAINED BY SLS TECHNOLOGY Ivana Jevtić1*, Goran Mladenović2*, Miloš Milošević1, Aleksa Milovanović1, Isaak Trajković1, Milan Travica1 1) University of Belgrade, Innovation Centre of the Faculty of Mechanical Engineering, Belgrade, SERBIA *email: ijevtic@mas.bg.ac.rs , gmladenovic@mas.bg.ac.rs 2) University of Belgrade, Faculty of Mechanical Engineering, Belgrade, SERBIA
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Abstract Dimensional accuracy estimation of additively manufactured parts obtained via Selective Laser Sintering (SLS) is examined. As benchmark models, tensile specimens according to ISO 527-2 standard and bending specimens according to ISO 178 are selected. For all additively manufactured specimens, dimensions are measured and compared with the original CAD models. Tensile specimens are 170×20×4 mm in bulk, and the specimens intended for 3-point bend tests are 96×8×4 mm in bulk. Both specimen configurations are additively manufactured in two different printing orientations, i.e. horizontal and vertical. All specimens are produced on the Fuse 1 device (FormLabs, Summerville, MA), using Polyamide 12 (PA 12) material. After fabrication and post-processing, all specimens are scanned on Atos Core 200 3D scanner and afterward compared with the original CAD models via the GOM Inspect programme (GOM Metrology GmbH, Braunschweig, Germany). Keywords: selective laser sintering (SLS) technology, tensile testing, 3-point bend test, Polyamide 12, 3D scanning |
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full article (633 kB)
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