In-plane and through-thickness properties, failure modes, damage and delamination in 3D woven carbon fibre composites subjected to impact loading

R Gerlach, CR Siviour, J Wiegand, N Petrinic - Composites Science and …, 2012 - Elsevier
Composites Science and Technology, 2012Elsevier
Two noncrimp 3D woven carbon fibre composites (through thickness angle interlock) of
binder volume fractions 3% and 6% were characterised for their response to applied
deformation. Experiments were performed at quasi static, medium and high strain rates
under a large variety of load cases (tension in warp/weft direction, interlaminar/intralaminar
shear, through thickness tension/compression, 3-point bending and plate bending). During
the study, novel experimental methods were developed in order to address several …
Two noncrimp 3D woven carbon fibre composites (through thickness angle interlock) of binder volume fractions 3% and 6% were characterised for their response to applied deformation. Experiments were performed at quasi static, medium and high strain rates under a large variety of load cases (tension in warp/weft direction, interlaminar/intralaminar shear, through thickness tension/compression, 3-point bending and plate bending). During the study, novel experimental methods were developed in order to address several challenges specific to 3D composite materials. The results show that, while the different binder volume fractions of 3% and 6% have only a small effect on the in-plane stiffness (warp and weft direction), its effect on the delamination resistance in plate bending experiments is considerable. This is a very important result for the use of these materials in the future. The availability, in previous publications, of complementary data for the matrix and the interface between matrix pockets and fibre bundles makes the comprehensive data set a generically useful reference for hierarchical numerical modelling strategies.
Elsevier
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