Numerical Investigation of Multi-scale Characteristics of Single and Multi-layered Woven Structures

Abstract Resin flow through multi-ply woven fabrics is affected by the fibre orientation and laminate stacking sequence during impregnation process. This characterised permeability, which measures ability of transferring fluids within a 2D or 3D layered architecture (i.e., porous medium). The work aims to investigate feasibility characterising macro-scale permeability via micro-meso-scale (dual-scale) across along yarns, with different structures yarn nesting, non-shifting, ply orientation. characterisation performed using Ansys-Fluent software package where textile architectures resin in media are simulated. results show that in- out-plane nested, non-shifted oriented single-ply preforms than corresponding multi-layered plates, making them only applicable for dual-scale permeabilities. However, number plies — e.g., 9-ply 5-ply, out-of-plane flows, respectively permeabilities can be extended macro-flow at all scales (multi-scale flow). calculated in-plane multi-scale then used simulations compared analytical solution Darcy’s equation, resulted very good agreement.