Abstract. Vacuum Assisted Resin Infusion (VARI) method employs a mould on top of which a number of fabric pieces are laid up and impregnated by resin drawn through vacuum. Simulation of VARI depends on the determination of fabric permeability. In this work, permeability value is selected from a set of discrete values by a genetic algorithm. An impregnation simulation model is run on ComsolTM to compute the flow front propagation inside the fabric. The genetic algorithm compares the evolution (propagation) of the impregnation front, in a space and time dimension, with the corresponding result of one single actual impregnation experiment, obtained by machine vision. A simple part suffices for this experiment assuming homogenous fabric porosity. The computational cost of the method is low, making it superior to experimental determination of permeability on expensive custom-made devices.
|Title of host publication
|Materials Research Proceedings
|Published - 25 May 2023