Improvement and Optimisation of Interlaminar Fracture Toughness in Carbon-Carbon Composites by Third Phase Toughening

Gary Savage        

Anales de la Mecánica de la Fractura, nº 15 . 1998 . Pág. 345 -354
Ver (.pdf): Anales15-054

Resumen: Carbon fibre reinforced carbon composites fabricated via the resin pyrolysis production route are often limited in performance by their poor interlaminar properties. This arises because of a brittle matrix phase and weak fibre/matrix interface. It has been shown that considerable improvements may be made in the interlaminar toughness of these materials by the addition of graphite particulate fillers to the matrix. A crack blunting and deflection mechanism was invoked analogous to those familiar in thermoplastic toughened epoxy resin matrix composites. The effectiveness of the toughening mechanism, quantified using fracture mechanics measurements, was found to depend significantly on both the amount and particle size of the filler


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