Abstract
The thermal conductivity of the unidirectional copper matrix–carbon fibre composite is characterised and analysed in directions parallel and transverse to the carbon fibre orientation. Unidirectional samples with different fibre content were produced by diffusion bonding of continuous copper-coated carbon fibre tows. The thermal diffusivity was measured in two main orientations to the fibre direction by the laser-flash technique. The longitudinal and transverse thermal conductivity was then calculated and results were compared with simple analytical models. Measurements revealed decreasing thermal conductivity as the fibre volume content in the composite increased and the transverse thermal conductivity of the unidirectional samples presented much lower values in comparison to the longitudinal one.
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