Document Type

Article

Publication Date

2024

DOI

10.3390/polym16010031

Publication Title

Polymers

Volume

16

Issue

1

Pages

31 (1-21)

Abstract

Automated fiber placement is a state-of-the-art manufacturing method which allows for precise control over layup design. However, AFP results in irregular morphology due to fiber tow deposition induced features such as tow gaps and overlaps. Factors such as the squeeze flow and resin bleed out, combined with large non-linear deformation, lead to morphological variability. To understand these complex interacting phenomena, a coupled multiphysics finite element framework was developed to simulate the compaction behavior around fiber tow gap regions, which consists of coupled chemo-rheological and flow-compaction analysis. The compaction analysis incorporated a visco-hyperelastic constitutive model with anisotropic tensorial prepreg viscosity, which depends on the resin degree of cure and local fiber orientation and volume fraction. The proposed methodology was validated using the compaction of unidirectional tows and layup with a fiber tow gap. The proposed approach considered the effect of resin bleed out into the gap region, leading to the formation of a resin-rich pocket with a complex non-uniform morphology.

Rights

© 2023 by the authors.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) License.

Data Availability

Article states: "The data presented in this study are available on request from the corresponding author. The data are not publicly available due to the proprietary model."

Original Publication Citation

Jamora, V. C., Rauch, V., Kravchenko, S. G., & Kravchenko, O. G. (2024). Effect of resin bleed out on compaction behavior of the fiber tow gap region during automated fiber placement manufacturing. Polymers, 16(1), 1-21, Article 31. https://doi.org/10.3390/polym16010031

ORCID

0000-0001-9477-0986 (Jamora),

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