User-Friendly Permeability Predicting Software for Technical Textiles

Abstract

For the simulation of the injection stage of the manufacturing process of composite materials, the permeability value of the textile is an important input parameter. The permeability of textiles can be determined experimentally, however, this is a time and resource consuming process, and no standard procedure is yet available. In this paper we present an easy to use software package to simulate the flow through a textile model, and predict the permeability. Results are presented for a woven fabric and are compared with experimental results.

Modelling of the permeability of non-crimp fabrics for composites

“…The local parameter K yarn is calculated analytically, based on the local volume fraction, and the dimension and direction of the fi bres. Different formulae for the computation of the local permeability have been investigated: Verleye et al (2009) show that the formulae by Gebart (1992) [10.5] agree the best with numeral results. Here, K along is the permeability along the direction of the fi bres, and K trans the permeability in the transverse direction.…”

Computation of permeability of a non-crimp carbon textile reinforcement based on X-ray computed tomography images

“…6. Permeability calculations were performed with FlowTex software [14,27,28], developed at KU Leuven in collaboration with the Institute for Numerical Simulation at the University of Bonn. FlowTex calculations were successfully benchmarked against finite element CFD ANSYS calculations [29].…”