An Inverse method for determining fabric permeability in vacuum assisted resin infusion for composite parts forming

VOSNIAKOS G-C., Panagiotis J. Dimakopoulos, Anastasia Vasileiou

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

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.
Original languageEnglish
Title of host publicationMaterials Research Proceedings
DOIs
Publication statusPublished - 25 May 2023

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