About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
EVALUATION OF SOLIDIFICATION IN POWDER BED FUSION USING A HIGH SPEED CAMERA |
Author(s) |
Holger Merschroth, Jana Harbig, Matthias Weigold, Johannes Geis, Eckhard Kirchner |
On-Site Speaker (Planned) |
Holger Merschroth |
Abstract Scope |
Powder bed fusion using a laser beam (PBF-LB) enables geometrical design freedom to build parts for optimized functionality. Furthermore, PBF-LB enables microstructural design freedom. By controlling the solidification behaviour microstructural adaptions can be made to obtain the full potential of the material. As the solidification rates and the thermal gradient depend on the local part geometry, new data-driven approaches, e.g. machine learning (ML), seem to be suitable for local microstructural adaptions. In this work an evaluation concept to analyse the thermal melt pool characteristics based on a high-speed camera is developed. The melt pool intensity is used to derive the thermal gradient and combined with an image rate of 41,000 fps the solidification rate is derived. The developed approach provides data for ML-based process adaptions but also serves for quality assurance tasks. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |