A study of repeated impact loading on a symmetrical carbon fibre laminate

David-West, O.S. and Nash, D.H. and Banks, W.M. (2007) A study of repeated impact loading on a symmetrical carbon fibre laminate. In: 16th International Conference on Composite Materials, 2011-07-20.

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Abstract

The behaviour of a symmetric laminate under repeated low energy hits of a 12.1mm hemispheric impactor was evaluated. The laminate was able to endure 20 collisions with the striker before perforation. The rate of damage progression was characterised by an equation from the energy profile that correlates the propagation energy and time. The function was represented by a sixth order polynomial. This was differentiated to give the rate of damage evolution. The contact time related to theimpact events with the same degree of polynomial. At perforation fibre breakage and matrix cracking were observed.

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