About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
In-situ Interferometry for Vat Photopolymerization Additive Manufacturing |
Author(s) |
Yue Zhang, Chaitanya Krishna Prasad Vallabh, Xiayun Zhao |
On-Site Speaker (Planned) |
Yue Zhang |
Abstract Scope |
Current digital light processing (DLP) based vat photopolymerization (VPP) processes lacks in-situ monitoring approaches to understand and control the photopolymerization process along with the evolution of the print part properties. To achieve an insightful understanding of the physical curing process during VPP, an in-situ monitoring system is desired to visualize the curing dynamics and estimate the printed part’s properties, especially the cured height and degree of conversion (DoC). To realize this, we develop an in-situ interferometric curing monitoring (ICM) system for measuring the cured height and DoC profiles of the printed part during a DLP based VPP process. A sensor model is developed to analyze the interferogram data for estimating each voxel’s cured height and DoC across the print area. It has the potential to provide real-time, close-loop feedback control for VPP, thus improving the overall accuracy and reproducibility of the parts being printed |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |