Using micro-CT to quantitatively validate the textile compaction simulation

Abstract

The results of any dry textile compaction simulation have to be validated. Micro-CT is a perfect tool to facilitate such a task. By performing an equivalent dry textile compaction experiment inside a micro-CT, the actual deformation and placement of fibrous tows can be captured within a sample as it deforms. The resulting micro-CT images can readily be used to qualitatively validate a compaction model. This work presents a set of methodologies to facilitate a straight forward quantitative comparison between a micro-CT sample and an equivalent compaction model. The images from the micro-CT and the compaction models are subjected to various image processing techniques that are implemented in MATLAB. The program is designed to allow a user to process the images in a consistent and semi-automated manner while minimising the manual labour time. Various cross-sectional parameters of the tows at each image slice are computed automatically using an algorithm that can handle any arbitrarily shaped cross section. By presenting the computed data as a series of Excel files and 3D plots, this work concludes that micro-CT can be used to conveniently quantitatively validate the result of compaction models.