| 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 |
3D Printing of High-performance Carbon Fiber Composites via Modified Drop-on-demand Method |
| Author(s) |
John M. Pappas, Xiangyang Dong |
| On-Site Speaker (Planned) |
John M. Pappas |
| Abstract Scope |
This study presents a novel method to fabricate high-strength, continuous-fiber composites through a hybrid drop-on-demand and stereolithography technique. Photopolymer resin was selectively applied onto strategically placed carbon fiber. Control of the composite fiber volume fraction was achieved through compression of the resin-infused carbon-fiber layer using a custom glass plate. Laser-assisted curing resulted in high-resolution semi-cured continuous fiber composites. A thermal post-curing procedure was utilized to achieve the final properties of the printed composites. The effect of electrophoretically deposited nanoporous carbon-nanotube coatings was also investigated to evaluate resin impregnation efficiency due to capillary forces, and hence mechanical properties by three-point bending test on printed test specimens. The microstructure of the resulting composites was also characterized. This study demonstrated the feasibility of fabricating high-performance carbon fiber composites using drop-on-demand printing techniques, while providing potential for customization of mechanical properties through control of fiber placement. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |