 |
|
|
|
| HAL: hal-00399533, version 1 |
| Detailed view |  Export this paper |
|
|
| uroCVD17 / ICVD XVII, Vienna : Autriche (2009) |
|
|
|
|
| Fibre-scale Modeling of C/C Processing by Chemical Vapour Infiltration Using Xray CMT Images and Random Walkers |
|
|
| Gérard Vignoles 1Christian Germain 2 |
|
|
| (2009-10) |
|
|
|
| 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. |
|
|
|
|
|
|
|
|
|
|
|
| 1: | Laboratoire des Composites Thermostructuraux (LCTS) |
|
|
|
CEA : DAM/DMAT - DEN/DTEC – CNRS : UMR5801 – Université Sciences et Technologies - Bordeaux I – SNECMA |
|
|
| 2: | Laboratoire de l'intégration, du matériau au système (IMS) |
|
|
|
CNRS : UMR5218 – Université Sciences et Technologies - Bordeaux I – Institut Polytechnique de Bordeaux |
|
|
|
|
|
|
|
|
|
| Subject | : | Engineering Sciences/Signal and Image processing Chemical Sciences/Material chemistry Computer Science/Signal and Image Processing |
|
|
| Attached file list to this document: | |||||
|
|||||
|
|
|
| hal-00399533, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00399533 | |
| oai:hal.archives-ouvertes.fr:hal-00399533 | |
| From: Gerard L. Vignoles | |
| Submitted on: Monday, 6 July 2009 23:13:18 | |
| Updated on: Monday, 6 July 2009 23:57:17 | |
