Abstract
A sensor platform for experimental in-situ characterization of metal laser powder bed fusion (LPBF) is developed and used to analyze the gas flow across the powder bed. The gas flow in metal L-PBF is crucial to attaining transient and spatially consistent results. The gas flow removes spatter from the welding process as well as the plume consisting of metal condensate. Defects like porosity will result from these process byproducts not being removed. A CNC gantry with a flow sensor
mounted measured the gas velocity across the process area. The automated measurements were analyzed and used to improve the gas flow by changing the inlet geometry. The method can be used as a supplement to computational fluid dynamics, as well as a calibration tool for simulations, to improve the efforts toward better models of the metal L-PBF process.
mounted measured the gas velocity across the process area. The automated measurements were analyzed and used to improve the gas flow by changing the inlet geometry. The method can be used as a supplement to computational fluid dynamics, as well as a calibration tool for simulations, to improve the efforts toward better models of the metal L-PBF process.
| Original language | English |
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| Title of host publication | Proceedings of the 33rd Annual International Solid Freeform Fabrication (SFF) Symposium |
| Publisher | The University of Texas at Austin |
| Publication date | 2022 |
| Pages | 1321-1330 |
| Publication status | Published - 2022 |
| Event | Solid Freeform Fabrication Symposium 2022: 33rd Annual Meeting - Hilton Austin, Austin, United States Duration: 25 Jul 2022 → 27 Jul 2022 https://www.sffsymposium.org/ |
Conference
| Conference | Solid Freeform Fabrication Symposium 2022 |
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| Location | Hilton Austin |
| Country/Territory | United States |
| City | Austin |
| Period | 25/07/2022 → 27/07/2022 |
| Internet address |