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Title:

Quantitative analysis of thin metal powder layers via transmission X-ray imaging and discrete element simulation: Roller-based spreading approaches

Document type:
Zeitschriftenaufsatz
Author(s):
Ryan W. Penny, Daniel Oropeza, Reimar Weissbach, Patrick M. Praegla, Christoph Meier, Wolfgang A. Wall, A. John Hart
Abstract:
A variety of tools can be used for spreading metal, ceramic, and polymer feedstocks in powder bed additive manufacturing (AM) methods. Rollers are often employed when spreading powders with limited flowability, as arises in powders comprising fine particle sizes or high surface energy materials. Here, we study roller-based powder spreading for powder bed AM using the unique combination of a purpose-built powder spreading testbed with a proven method for X-ray mapping of powder layer depth. We fo...     »
Keywords:
Additive manufacturing Powder spreading X-ray Layer uniformity Discrete element method Powder flow
Journal title:
Power Technology
Year:
2024
Covered by:
Scopus
Reviewed:
ja
Language:
en
Fulltext / DOI:
doi:10.1016/j.powtec.2023.119105
Status:
Verlagsversion / published
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