A Round Robin study for selective laser sintering of polymers: Back tracing of the pore morphology to the process parameters

Journal article


Publication Details

Author(s): Stichel T, Frick T, Laumer T, Tenner F, Hausotte T, Merklein M, Schmidt M
Journal: Journal of Materials Processing Technology
Publisher: ELSEVIER SCIENCE SA
Publication year: 2018
Volume: 252
Pages range: 537-545
ISSN: 0924-0136
eISSN: 1873-4774


Abstract

The mechanical properties of polymer parts built by Selective Laser Sintering are strongly related to the internal microstructure which differs with the applied production parameters. The paper focuses on the back tracing of the pore morphology of laser sintered polyamide-12 samples to the process parameters. Therefore, a data base is used which is supplied by a Round Robin initiative and includes mechanical tensile tests and the microstructural analysis of the pore morphology of several different sample charges built with different machines. The pore morphologies (porosity, pore density, pore shape and pore arrangement) measured by X-ray computed tomography are compared and discussed regarding the employed parameters and the resulting mechanical properties.The investigations point out that pore density is a superior indicator than porosity for mechanical issues. This is especially valid along the build direction since pore morphology has shown to be strongly anisotropic. Moreover, the analysis revealed that pore density is strongly affected by the process temperature, which is proved to be essential for the fabrication of mechanical robust parts using Selective Laser Sintering.


FAU Authors / FAU Editors

Hausotte, Tino Prof. Dr.-Ing.
Lehrstuhl für Fertigungsmesstechnik
Laumer, Tobias
Lehrstuhl für Photonische Technologien
Merklein, Marion Prof. Dr.-Ing.
Institute of Manufacturing Technology
Schmidt, Michael Prof. Dr.-Ing.
Lehrstuhl für Photonische Technologien
Tenner, Felix
Lehrstuhl für Photonische Technologien


External institutions with authors

Bayerisches Laserzentrum gemeinnützige Forschungsgesellschaft mbH (BLZ)


How to cite

APA:
Stichel, T., Frick, T., Laumer, T., Tenner, F., Hausotte, T., Merklein, M., & Schmidt, M. (2018). A Round Robin study for selective laser sintering of polymers: Back tracing of the pore morphology to the process parameters. Journal of Materials Processing Technology, 252, 537-545. https://dx.doi.org/10.1016/j.jmatprotec.2017.10.013

MLA:
Stichel, Thomas, et al. "A Round Robin study for selective laser sintering of polymers: Back tracing of the pore morphology to the process parameters." Journal of Materials Processing Technology 252 (2018): 537-545.

BibTeX: 

Last updated on 2019-30-07 at 13:34