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Assessment of Geometrical and Transport Properties of a Fibrous C/C Composite Preform Using x-ray Computerized Micro-tomography: Part I. Image Acquisition and Geometrical Properties

Published online by Cambridge University Press:  03 March 2011

Olivia Coindreau  and
Gérard L. Vignoles
Olivia Coindreau
Affiliation:
Laboratoire des Composites ThermoStructuraux (LCTS) UMR 5801 CNRS-Université Bordeaux 1—CEA—Snecma, Université Bordeaux 1, F 33600 Pessac, France
Gérard L. Vignoles*
Affiliation:
Laboratoire des Composites ThermoStructuraux (LCTS) UMR 5801 CNRS-Université Bordeaux 1—CEA—Snecma, Université Bordeaux 1, F 33600 Pessac, France
*
a) Address all correspondence to this author. e-mail: vinhola@lcts.u-bordeaux1.fr
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Abstract

Raw and partially infiltrated carbon–carbon composite preforms have been scanned by high-resolution synchrotron radiation x-ray computerized micro-tomography. Three dimensional high-quality images of the pore space have been produced at two distinct resolutions and have been used for the computation of geometrical quantities: porosity, internal surface area, pore sizes, and their distributions, as well as local and average fiber directions. Determination of the latter property makes use of an original algorithm. All quantities have been compared to experimental data with good results. Structural models appropriate for ideal families of cylinders are shown to represent adequately the actual pore space.

Keywords

InfiltrationPorosityX-ray tomography
Type
Articles
Information
Journal of Materials Research , Volume 20 , Issue 9 , September 2005 , pp. 2328 - 2339
Copyright
Copyright © Materials Research Society 2005

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