About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Materials
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Presentation Title |
Development of Effective Powder Layer Thickness for Different Materials and Process Conditions |
Author(s) |
Theresa Hanemann, Deniz Jansen, Markus Radek, Astrid Rota, Jörg Schröpfer, Martin Heilmaier |
On-Site Speaker (Planned) |
Theresa Hanemann |
Abstract Scope |
A realistic assumption of the effective powder layer thickness (EPLT) is of great importance when simulating the laser powder bed fusion process as well as for single layer experiments relating process parameters to multilayer builds. Due to densification of the powder material when melting the EPLT can be calculated theoretically as the quotient of nominal layer thickness and powder bed density. However, this theoretical assumption greatly underestimates the EPLT which is influenced by spatter and denudation. In this study we investigated the development of EPLT with nominal layer thickness for different powders and process parameters. The ratio of effective to nominal layer thickness, which can also be a measure of powder waste, was found to increase with decreasing nominal layer thickness. Additionally, the effective layer thickness was changed significantly with changing laser parameters and material. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |