Fibre-scale Modeling of C/C Processing by Chemical Vapour Infiltration using Xray CMT Images and Random Walkers

We present a computational tool for the modeling of Chemical Vapor Infiltration of carbon/carbon composites, which is based on 3D images acquired by X-ray Computerized Micro-Tomography with a very fine resolution, such that the fibers are clearly distinguishable from each other. Preliminary image pr...

Full description

Saved in:
Bibliographic Details
Published inECS transactions Vol. 25; no. 8; pp. 1275 - 1284
Main Authors Vignoles, Gerard L., Germain, Christian, Coindreau, Olivia, Mulat, Christianne, Ros, William
Format Journal Article
LanguageEnglish
Published 25.09.2009
Online AccessGet full text

Cover

More Information
Summary:We present a computational tool for the modeling of Chemical Vapor Infiltration of carbon/carbon composites, which is based on 3D images acquired by X-ray Computerized Micro-Tomography with a very fine resolution, such that the fibers are clearly distinguishable from each other. Preliminary image processing is necessary in order to perform segmentation between solid and void phases. Then, morphological and transport properties are computed in the images. Random walkers are used for the simulation of gas transport in continuum and rarefied regimes. The image modification under chemical deposition is handled by a specific surface discretization technique and a pseudo-VOF method. Results are presented and discussed: the notion of infiltrability is introduced as a design tool for the CVI engineer.
ISSN:1938-5862
1938-6737
DOI:10.1149/1.3207733