2021
DOI: 10.2139/ssrn.3976134
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Multi-Faceted Monitoring of Powder Flow Rate Variability in Directed Energy Deposition

Abstract: Powder flow rate is a key parameter in Directed Energy Deposition (DED) processes. During a typical build, if powder flow rate is reduced for just 1 second, 30 mm of melt track is affected. Consequently, even a small variation in powder flow rate can have significant implications on build quality. In this work, the powder flow stability for different types of 316 L steel powders was quantified using a combination of methodologies including offline weight measurements, flow imaging, in-situ build data and coaxi… Show more

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