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Experimental investigations for improved modelling of the laser sintering process of polymers

 
: Rudloff, J.; Lang, M.; Mohseni-Mofidi, S.; Bierwisch, C.

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Fulltext ()

Procedia CIRP 94 (2020), pp.80-84
ISSN: 2212-8271
Deutsche Forschungsgemeinschaft DFG
Piority Programm 2122 Materials for Additive Manufacturing; BI 1859/2-1
Deutsche Forschungsgemeinschaft DFG
Piority Programm 2122 Materials for Additive Manufacturing; LA 4328/1-1
English
Journal Article, Electronic Publication
Fraunhofer IWM ()
simulation; modelling; laser sintering; Polyamide 12; thermal imaging

Abstract
For laser sintering the knowledge about which material properties are important for the process and the product quality is insufficient. This causes significant difficulties in developing new materials. To address this problem, a link between material data, process parameters and component quality is necessary. This link can be achieved by a combination of experimental investigations and theoretical considerations to develop dimensionless characteristic numbers. As a first step to derive such numbers, this paper presents experimental methods to determine temperature development and sintered volume during the sintering process. These methods are used to investigate different process parameter settings during the sintering of polyamide 12. The measurement results are then compared with simulated results.

: http://publica.fraunhofer.de/documents/N-606018.html