About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Presentation Title |
Influence of Light Intensity and Exposure Time on Cure Depth and Overpolymerization in Ceramic Vat Photopolymerization |
Author(s) |
Nellie Pestian, Alex Gonzalez, Geoff Brennecka, Craig Brice, Joy Gockel |
On-Site Speaker (Planned) |
Nellie Pestian |
Abstract Scope |
Ceramic part production via vat photopolymerization is a complex process, with many potential sources of variability for the final product. It is crucial to understand the source and magnitude of any variability in order to produce reliable parts with this process. One potential source of variability lies in the interaction of light with slurry, which is investigated in this work by curing single-layer samples with different light intensities and exposure times, then measuring the cure depth (along the z-axis) and the overpolymerization (in the x-y plane). The experiments are repeated for two popular technical ceramics, high-purity alumina and yttria-stabilized zirconia, to determine whether the methods and conclusions are transferrable to different materials. This presentation reports statistical modeling and analysis of both cure depth and overpolymerization as a function of process parameters, while highlighting potential sources of process variability. Finally, connections are made between observations in single-layer samples and bulk parts. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |