| About this Abstract |
| Meeting |
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Symposium
|
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Presentation Title |
Effect of Fiber Clustering on Void Formation in Additive Manufacturing of Continuous Carbon Fiber Thermoset Composites |
| Author(s) |
Shaharear Md Emtiaz, Maximilian Pitto, Suresh Advani |
| On-Site Speaker (Planned) |
Shaharear Md Emtiaz |
| Abstract Scope |
In this novel thermoset composite Additive Manufacturing (AM) process, a continuous carbon fiber tow is impregnated with epoxy. It is then pulled through a dual-cure resin bath consisting of a UV-curable resin mixed with the same epoxy resin. The UV resin is cured during consolidation to stiffen the prepreg and maintain the shape during steering. However, voids inside the final 3D printed parts due to improper impregnation, can compromise quality. In this work, the tension on the fiber tow varies with different pulling speeds, which can create inhomogeneity in the fiber tow architecture, resulting in non-uniform permeability. This tension variation can also lead to the formation of zones where fibers agglomerate, known as clustering. Identifying the effect of clustering on permeability and tow impregnation and their influence on the creation of voids inside the fiber tow is the primary focus of this paper. Numerical parametric studies on the influence of cluster zone permeability, cluster size, cluster location, and the spacing be-tween multiple clusters on void percentages is conducted. The results show that clusters exceeding 16% of the tow width can result a total void content above 5%. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |