| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Relating Degree-of-conversion and Temperature States via Tomographic Fluorescence Imaging |
| Author(s) |
Sui Man Luk, Chi Chung Li, Joseph Toombs, Hayden Taylor |
| On-Site Speaker (Planned) |
Sui Man Luk |
| Abstract Scope |
Tomographic volumetric additive manufacturing rapidly solidifies freeform objects via photopolymerization, which raises both local degree-of-conversion (DOC) and temperature. In-situ monitoring of DOC and temperature during the printing process is crucial for metrology and process control. In this study, we propose a tomographic fluorescence imaging technique to detect the spatiotemporal evolution of DOC and temperature during volumetric printing. Our solution employs a fluorescent dye that is sensitive to both variations in temperature and DOC. By tomographically measuring changes in the dye's fluorescence intensity and feeding such changes to a temperature-DOC-intensity calibration, the local DOC and temperature during the print can be confined to a set of possible states. At exemplar locations where a priori information is known for one quantity, the other quantity can be resolved. This work illustrates the potential of and lays foundations for the development of two-wavelength spatiotemporal measurement systems that uniquely resolve both DOC and temperature. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |