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arXiv · 2304.07291

Hygroscopic phase field fracture modelling of composite materials

K. Au-Yeung·A. Quintanas-Corominas·E. Martínez-Pañeda·W. Tan
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Abstract

This paper investigates the effect of moisture content upon the degradation behaviour of composite materials. A coupled phase field framework considering moisture diffusion, hygroscopic expansion, and fracture behaviour is developed. This multi-physics framework is used to explore the damage evolution of composite materials, spanning the micro-, meso- and macro-scales. The micro-scale unit-cell model shows how the mismatch between the hygroscopic expansion of fibre and matrix leads to interface debonding. From the meso-scale ply-level model, we learn that the distribution of fibres has a minor influence on the material properties, while increasing moisture content facilitates interface debonding. The macro-scale laminate-level model shows that moisture induces a higher degree of damage on the longitudinal ply relative to the transverse ply. This work opens a new avenue to understand and predict environmentally-assisted degradation in composite materials.

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BibTeXRIS

K. Au-Yeung, A. Quintanas-Corominas, E. Martínez-Pañeda, W. Tan. 2023-04-06. Hygroscopic phase field fracture modelling of composite materials. https://arxiv.org/abs/2304.07291

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