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Fundamental investigation of laser beam melting of polymers for additive manufacture

  • By selective laser sintering (SLS), polymer powders are molten layer by layer to build conventional prototypes or parts in small series with geometrical freedom that cannot be achieved by other manufacturing technologies. The SLS process is mainly defined by the beam–matter interaction between powder material, laser radiation and different material characteristics by itself. However the determination of these different material characteristics is problematic because powder material imposes certain requirements that cannot sufficiently be provided by conventional measurement methods. Hence new fundamental investigation methods to determine the optical and thermal material characteristics like the thermal diffusivity, thermal conductivity, or the influence of different heating rates on the melting behavior are presented in this paper. The different analysis methods altogether improve the process of understanding to allow recommendations for the future process controlling.

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Metadaten
Author:Tobias LaumerORCiDGND, Katrin WudyORCiDGND, Maximilian Drexler, Philipp AmendGND, Stephan Roth, Dietmar DrummerGND, Michael Schmidt
DOI:https://doi.org/10.2351/1.4892848
ISSN:1938-1387
ISSN:1042-346X
Parent Title (English):Journal of Laser Applications
Publisher:AIP Publishing
Document Type:Article
Language:English
Year of first Publication:2014
Release Date:2022/11/24
Volume:26
Issue:4
Article Number:042003
Institutes:Fakultät Maschinenbau
Fakultät Maschinenbau / Labor Additive and Intelligent Manufacturing for Sustainability (AIMS)
Begutachtungsstatus:peer-reviewed
Publication:Externe Publikationen
research focus:Produktion und Systeme
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG