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- 2019 (2)
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- Englisch (2)
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- Additive Manufacturing (1)
- Additive Manufacturing (AM) (1)
- Aerosol measurements (1)
- Characterisation (1)
- Environment (1)
- Fatigue (1)
- Fume (1)
- In-situ Process Monitoring (1)
- Laser Powder Bed Fusion (L-PBF) (1)
- Non-destructive Materials (1)
Organisationseinheit der BAM
- 9 Komponentensicherheit (2) (entfernen)
Laser Powder Bed Fusion (L-PBF) is a promising additive manufacturing (AM) technology for metal part production especially for complex and lightweight structures or functional designs. In L PBF processes several by-products including welding plume and its condensates, spatter and ejected powder are generated during laser exposure. Investigations of micro- and nano-sized by-products have received little attention in literature. This study focuses on the analysis of particle emissions in L PBF of 316L stainless steel using a scattered light aerosol spectrometer and a fast mobility particle sizer spectrometer during the process which allows for in-situ analysis of particle sizes in the range of 6 nm to 100 µm. A distinct correlation of emission signals to part position can be revealed. In addition, a significant influence of laser scanning vector directions on emission signals is presented. Furthermore, differing powder layer thicknesses can be recognised by deviations in emission signals.