Transverse permeability of roving-based fibrous media: Influence of resin rich layers

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Abstract

Transverse permeability is a key parameter to construct accurate process modelling frameworks for composite manufacturing processes whereby dry reinforcements are impregnated by a resin. The transverse permeability of fibrous structures is strongly correlated with the spatial fiber distribution which is inevitably irregular through the cross section. This irregularity and possible resin channel formation through the cross section cause complex permeability field. In this study, we analysed the correlation between the microstructural features and the apparent transverse permeability. Multiple regions of interest were collected from a pultruded part’s cross section that exhibited apparent resin rich layers. Apparent transverse permeability values of these Regions of Interest (ROIs) were calculated by using OpenFOAM. The principal components of the transverse were calculated, and the statistical descriptors were captured for the corresponding ROIs. The principal permeability component analysis showed that principal directions are in-line with the visual predictions. The correlation between the permeability components and the statistical descriptors shows some traces of the capability of predicting the transverse permeability and the principal components based on the microstructural features. A larger dataset and more elaborate statistical descriptors are needed for accurate prediction of the flow behaviour and the apparent permeability components.
Original languageEnglish
Title of host publicationProceedings of the 23rd International Conference on Composite Materials (ICCM23)
Number of pages11
Publication statusPublished - 2023
EventICCM23- International Conference on Composite Materials 2023 - Belfast, United Kingdom
Duration: 30 Jul 20234 Aug 2023

Conference

ConferenceICCM23- International Conference on Composite Materials 2023
Country/TerritoryUnited Kingdom
CityBelfast
Period30/07/234/08/23

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