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Articles

In-process monitoring and non-destructive evaluation for metal additive manufacturing processes

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By Alkan Donmez, Jason Fox, Felix Kim, Brandon Lane
| nist.gov
, , , , , , , The rapid pace of maturation of metal additive manufacturing (AM) technologies, makes them an excellent candidate for the fabrication of nuclear power plant (NPP) components. However, the current levels of process variations create numerous challenges yet to be overcome for industrial acceptance of AM for NPP applications.
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Implementation of a Particle Tracking Method to Study Particle Spreading in Powder Bed Fusion Systems

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By Eric Whitenton, Alkan Donmez, Aniruddha Das, Vipin Tondare
| nist.gov
, , , , Justin Whiting Additive manufacturing is a rapidly growing and increasingly important set of manufacturing techniques. One of those techniques, powder bed fusion, is often used when making metal parts. The part is built up by spreading a thin layer of metal powder, melting that layer, and repeating. However, how that powder flows as it is spread can affect the ultimate part quality. Powder flow characteristics during spreading are poorly understood.
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