Lectures > Lecture 7

Lecture 7 by Pierre J.J. Dumont, Univ. Lyon, INSA-Lyon, CNRS, LaMCoS, UMR5259, Villeurbanne, France.

Title: Microstructural evolution of composite materials with discontinuous fibre reinforcements during forming processes: 3D characterisation and simulation.

3D X-ray micro-tomography coupled with in situ mechanical testing experiments can be used to characterise the evolution of composite materials in conditions that are representative of industrial forming conditions. This technique allows measuring the evolution of several microstructural descriptors such as pore size distribution or fibre orientation and deformation under various loading conditions. Quantifying these descriptors and their evolution from 3D images is a challenge that requires specific developments. The lecture will show that the measurements of these descriptors allow validating or improving models for the prediction of the rheological response of composite materials. We will also show that 3D images can be used as data input for the numerical simulation of the complex flow of discontinuous fibrous materials.

Biography: Pierre J.J. Dumont is Professor at INSA Lyon. His research interests include 3D X-ray micro-tomography to reveal the links between the manufacturing conditions, the microstructure and the end-use properties of composite and fibrous materials.