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Influence of highly contrasted dual-scale porosity carbon interlock fabrics on permeability, flow-induced deformation and saturation during CRTM process : Experimental characterization and modeling

Authors
  • Soares Gambarini, Gabriela
Publication Date
Aug 29, 2023
Source
Hal-Diderot
Keywords
Language
English
License
Unknown
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Abstract

A primary objective of this thesis is to developa permeability measurement methodology thataccurately characterizes the full permeabilitytensor of a carbon interlock fabric used in themanufacture of aircraft turbine blades using theC-RTM process. The unique characteristics ofthe fabric, including its high thickness andstiffness, its non-transparent fibers and itspronounced dual-porosity scale, presentchallenges when using traditional measurementtechniques.In order to measure the full permeability tensoreconomically and over a wide range of fibervolume fractions, a combination of experimentalmethods has been proposed and applied.The development of an experimental testbench to measure saturation during injectionand the influence of its very strong doubleporosity scale is presented. The results arecomplemented by preliminary mesoscopicnumerical modelling of a representativesimplified geometry.The challenges posed by the pronounceddouble scale of the pore space and the resultingmodes of impregnation of the interlocked fabricjustify the proposed approach of combiningexperimental analysis and modelling, whichmust be pursued in order to study thesemechanisms in greater depth.

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