Launhardt M, Drummer D (2019)
Publication Type: Journal article
Publication year: 2019
Book Volume: 39
Journal Issue: 2
DOI: 10.1515/polyeng-2018-0204
The additive manufacturing process of the laser sintering of polymers (LS) allows the production of complex parts right from CAD data. However, the manufactured parts often show dimensional inaccuracies. In order to fundamentally determine the influencing parameters on the accuracy of LS parts, a hatching specimen, a layer-specimen and defined part geometries are manufactured and subsequently measured. These, combined with a theoretical observation of the layer wise geometry buildup, are used to determine the fundamental portions of the development of dimensions in building direction (z-direction). The results indicated a defined powder adhesion height at the top and the bottom of a melted layer, along with the dependency of melt depth and the hatch number for small structures. Depending on the nominal heights of an LS part, either an oversize or undersize was detected.
APA:
Launhardt, M., & Drummer, D. (2019). Determination of the fundamental dimension development in building direction for laser-sintered parts. Journal of Polymer Engineering, 39(2). https://dx.doi.org/10.1515/polyeng-2018-0204
MLA:
Launhardt, Martin, and Dietmar Drummer. "Determination of the fundamental dimension development in building direction for laser-sintered parts." Journal of Polymer Engineering 39.2 (2019).
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