Dimensional and geometric deviations of parts in PA12 manufactured by selective laser sintering: numerical and experimental analyses

Dimensional and geometric deviations of parts in PA12 manufactured by selective laser sintering: numerical and experimental analyses

Valentina Vendittoli, Achille Gazzerro, Wilma Polini, Luca Sorrentino

Abstract. Selective Laser Sintering (SLS) uses a laser to sinter powdered polymeric materials, such as Polyamide 12 (PA12). Industrially, it is commonly used as a mixture of virgin and aged powder. The aged powder has undergone various thermal cycles without being sintered. This work aims to evaluate the differences in the dimensional and geometrical deviations of parts in PA12 obtained through SLS by virgin and aged powder. A numerical approach was used to simulate the SLS software to foresee these dimensional deviations as a function of the powder’s physical-chemical properties and the process parameters. The obtained results were validated through an experimental approach. Parallelepiped-shaped specimens were manufactured using an SLS printer and measured with a Coordinate Measuring Machine (CMM). The numerical results agree with the experimental ones. It seems that the differences between the dimensional deviations of the

Keywords
Additive Manufacturing, Inspection, Polymer

Published online 9/5/2023, 8 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Valentina Vendittoli, Achille Gazzerro, Wilma Polini, Luca Sorrentino, Dimensional and geometric deviations of parts in PA12 manufactured by selective laser sintering: numerical and experimental analyses, Materials Research Proceedings, Vol. 35, pp 198-205, 2023

DOI: https://doi.org/10.21741/9781644902714-24

The article was published as article 24 of the book Italian Manufacturing Association Conference

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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