Experimental determination and modeling of thermal conductivity tensor of carbon/epoxy composite.

Damien Lecointe (1) , Maxime Villiere (1) , Sawsane Nakouzi (2) , Vincent Sobotka (1) , Nicolas Boyard (1) , Fabrice Schmidt (2) , Didier Delaunay (1)

1 LTN - Laboratoire de thermocinétique [Nantes]
2 ICA - Institut Clément Ader

In this study, the effective thermal conductivity tensor of carbon/epoxy laminates was investigated experimentally in the three states of a typical LCM-process: dry-reinforcement, raw and cured composite. Samples were made of twill-weave carbon fabric impregnated with epoxy resin. The transverse thermal conductivity was determined using a classical estimation algorithm, whereas a special testing apparatus was designed to estimate in-plane conductivity for different temperatures and different states of the composite. Experimental results were then compared to modified Charles & Wilson and Maxwell models. The comparison showed clearly that these models can be used to accurately and efficiently predict the effective thermal conductivities of woven-reinforced composites.

Mots clés: Thermal conductivity; CFRP; conductivity modeling

Domaines: Sciences de l'ingénieur [physics]

Damien Lecointe, Maxime Villiere, Sawsane Nakouzi, Vincent Sobotka, Nicolas Boyard, et al.. Experimental determination and modeling of thermal conductivity tensor of carbon/epoxy composite.. ESAFORM 2012 - 15th International ESAFORM Conference on material forming, Mar 2012, Erlangen, Germany. pp.1091-1096, ⟨10.4028/www.scientific.net/KEM.504-506.1091⟩. ⟨hal-01687331⟩