Development and Characterisation of Pseudo-Ductile Hybrid Carbon/Glass-Epoxy Composites Made of Thin Spread Carbon Tows

Czél, Gergely and Etches, J. and Bond, I. P. and Wisnom, M. R. (2012) Development and Characterisation of Pseudo-Ductile Hybrid Carbon/Glass-Epoxy Composites Made of Thin Spread Carbon Tows. In: Proceedings of the 15th European Conference on Composite Materials (ECCCM15), 2012.06.24., Velence, Olaszország.

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Abstract

Unidirectional hybrid composites were fabricated by sandwiching single plies of two different types of thin, dry spread tow carbon fibre tapes between double plies of a conventional glass fibre-epoxy prepreg system. Tensile tests were carried out under optical video monitoring for later damage analysis. In the case of the specimens reinforced with a single layer of the thicker carbon fibre tape (68 g/m2 ), the failure type of the carbon layer was sudden and catastrophic. In the case of the thinner carbon fibre tape reinforcement (40 g/m2 ) a stable, pseudo-ductile damage process was observed, which was well pronounced on the stress-strain curves. Observed damage characteristics agreed well with the performed simple fracture mechanics analysis.

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