| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
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2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
High Speed Video Imaging of overhang surfaces in Beam Shaped Laser Powder Bed Fusion of 316L stainless steel |
| Author(s) |
Lars Vanmunster, Arnout Dejans, Brecht Van Hooreweder, Bey Vrancken |
| On-Site Speaker (Planned) |
Lars Vanmunster |
| Abstract Scope |
One of the novel strategies under investigation increase the build rate of laser powder bed fusion (LPBF) additive manufacturing is shaping the beam intensity profile to something other than a Gaussian distribution. Ring-like spot shapes are thought to allow for faster scan speeds and increased hatch spacing compared to defocused Gaussian beams. In this talk we will present our work on LPBF of 316L stainless steel with a variable beam profile laser switching between single mode and ring-like multimode spot shapes, implemented in a system allowing for in-layer beam switching. A high speed camera with fixed reference frame and a top down view is used to compare the difference in evaporation, denudation and spatter behavior between the different beam shapes for single tracks and full layers. The results improve our understanding of the potential to increase productivity with different beam shapes, and in-layer switching thereof. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |