About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
An Experimental Apparatus for High-speed Imaging and Analysis of Powder Primitive Formation in Binder Jet 3D Printing |
Author(s) |
Joshua Wagner, Wesley Combs, C. Fred Higgs III |
On-Site Speaker (Planned) |
Joshua Wagner |
Abstract Scope |
Wide scale adoption of binder jet 3D printing (BJ3DP) for high-performance components in aerospace, biomedical, defense, and other demanding applications requires improvement in mechanical properties and performance characteristics of end-use parts. Increased fidelity may be achieved with better understanding of the interfacial physics and complex fluid-particle interactions fundamental to the process. In this work, an experimental testing apparatus is presented that isolates the primary operation of the binder deposition step in BJ3DP. This allows for direct observation of the formation of primitives, which are the elemental bound particle agglomerations that compose the final part. High-speed, microscopic imaging is used to capture short time scale phenomena such as ballistic particle ejection and capillary-induced particle granulation. A dimensional analysis of the experimental setup is given, and the effects of various dimensionless process parameter groupings and particle size distributions on primitive formation are discussed. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |