Transferts thermiques 3D dans des composites silice – phénolique: méthodes thermographiques et tomographiques
TypeCommunications avec actes
Nous présentons ici le développement d'une approche double pour la caractérisation thermique des matériaux composites.
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Thermographic and tomographic methods for three-dimensional characterization of thermal diffusion in silica/phenolic composites AHMADI-SENICHAULT, Azita; VIGNOLES, Gérard; BRESSON, Grégory; CATY, Olivier; AYVAZYAN, Viguen; GREGORI, Maria Luisa; COSTA, S.F. (2014)Aeronautical and space vehicles include many parts made of composite materials. The thermal design of these materials is critical versus their application. Indeed, the presence of very high thermal gradients during use may ...
Thermographic and tomographic methods for tridimensional characterization of thermal transfer in silica/phenolic composites BESSON, Gerard; AHMADI-SENICHAULT, Azita; CATY, Olivier; AYVAZYAN, Vahan; GREGORI, Maria Luisa; COSTA, S.F.; VIGNOLES, Gérard (Composites Part B: Engineering, 2016)Silica/phenolic composite materials are often used in thermal protection systems (TPS) for atmospheric re-entry. The present work aims to compare two different approaches to assess heat transfer properties of these materials: ...
BRESSON, Grégory; CATY, Olivier; MERZEAU, Jonathan; DAU, Frédéric; AHMADI-SENICHAULT, Azita; VIGNOLES, Gérard (Association Française de Mécanique, 2013)Silica/phenolic composites are used in atmospheric re-entry heat shield parts in spatial and strategic domains. For this application, the material is submitted to thermo-mechanical stresses that lead to delaminations. To ...
VIGNOLES, Gérard; BRESSON, Grégory; LORRETTE, Christophe; AHMADI-SENICHAULT, Azita (Journal of Physics Conference Series, 2012)We propose a lightweight method for the determination of heat diffusivity of silica fiber bundles based on the use of a laser and an IR camera. The fiber bundle is maintained in traction in a holder; exposition is made as ...
Assessment of geometrical and transport properties of a fibrous C/C composite preform as digitized by X-ray CMT. Part II: heat and gas transport properties VIGNOLES, Gérard; COINDREAU, Olivia; AHMADI-SENICHAULT, Azita; BERNARD, Dominique (Material Research Society, 2007)Raw and partially infiltrated carbon–carbon composite preforms have been scanned by high-resolution synchrotron radiation x-ray computerized microtomography. Three-dimensional high-quality images of the pore space have ...