About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Influence of Novel Space Filling PBF-LB Scanning Strategies on Part Distortion and Density |
Author(s) |
Maximilian Frey, Max Frankenhauser, Volker Schulze, Frederik Zanger |
On-Site Speaker (Planned) |
Maximilian Frey |
Abstract Scope |
Additive Manufacturing, especially Powder Bed Fusion – Laser Beam (PBF-LB), is known for its ability to create intricate designs with high precision. Yet, residual stresses remain a challenge, causing distortion. Novel laser paths, including various spiral and space-filling curves such as Hilbert, Gosper, and Peano, have been investigated. They were compared with standard stripe strategies. Parameters such as scan length and hatch distance are varied while maintaining energy density constant. Cantilever beams were used to measure distortion and density. Fractal strategies show minimal distortion with slight density loss. Spiral paths lead to a minimized porosity but show an increased distortion. Segmenting paths reduce distortion across all strategies. The orientation of the cantilever relative to the gas flow affects the distortion extent. Gosper and Hilbert curves reduce distortion with slight density reduction, while spiral paths minimize porosity but increase distortion. Segmenting paths effectively reduce distortion without density loss in all strategies. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |