Correlation of spatter behavior and process zone formation in powder bed fusion of metals
| Autor: | Eric Eschner, Tobias Staudt, Michael Schmidt |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Stereoscopic imaging
0209 industrial biotechnology Fusion Materials science Mechanical Engineering Evaporation 02 engineering and technology Mechanics Thermal conduction Industrial and Manufacturing Engineering 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering Powder bed Process zone Laser beams |
| Zdroj: | CIRP Annals. 69:209-212 |
| ISSN: | 0007-8506 |
| Popis: | In powder bed fusion of metals by a laser beam (PBF-LB/M) spatters evolve due to evaporation phenomena within the interaction zone of the laser-beam and material. The evaporation is of high importance for the evolution of a melt depression in the process zone. We use high-speed stereoscopic imaging to measure the three-dimensional (3D) time-resolved spatter trajectories. The statistical spatter behavior is correlated with the transition from heat conduction mode into evaporation dominated mode in the interaction zone and its geometry. The results indicate a high potential to use statistical measures of the 3D spatter trajectories for quality assurance in PBF-LB/M. |
| Databáze: | OpenAIRE |
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