Assessment of structural and transport properties in fibrous C/C composite preforms as digitized by X-ray CMT. Part II : Heat and gas transport
Language
en
Article de revue
This item was published in
Journal of Materials Research. 2007, vol. 22, n° 6, p. 1537-1550
Springer
English Abstract
Raw and partially infiltrated carbon-carbon composite preforms have been scanned by high-resolution synchrotron radiation x-ray computerized micro-tomography (CMT). Three-dimensional (3D) high-quality images of the pore ...Read more >
Raw and partially infiltrated carbon-carbon composite preforms have been scanned by high-resolution synchrotron radiation x-ray computerized micro-tomography (CMT). Three-dimensional (3D) high-quality images of the pore space have been produced at two distinct resolutions and have been used for the computation of transport properties: heat conductivity, binary gas diffusivities, Knudsen diffusivities, and viscous flow permeabilities. The computation procedures are based on a double change-of-scale strategy suited to the bimodal nature of pore space, and on the local determination of transport anisotropy. Good agreement has been found between all calculated quantities and experimental data.Read less <
Origin
Hal imported