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Czél, G.
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Publications (5/5 displayed)
- 2017Unidirectional hybrid composite overload sensors
- 2016Hybrid effects in thin ply carbon/glass unidirectional laminatescitations
- 2016Energy dissipation during delamination in composite materials – An experimental assessment of the cohesive law and the stress-strain field ahead of a crack tipcitations
- 2015Reducing the notch sensitivity of quasi-isotropic layups using thin-ply hybrid laminates
- 2015Reducing the notch sensitivity of quasi-isotropic layups using thin-ply hybrid laminates: 30th Annual Technical Conference of the American Society for Composites, ASC 2015
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article
Hybrid effects in thin ply carbon/glass unidirectional laminates
Abstract
<p>Experimental results are presented which allow the hybrid effect to be evaluated accurately for thin ply carbon/epoxy-glass/epoxy interlayer hybrid composites. It is shown that there is an enhancement in strain at failure of up to 20% for very thin plies, but no significant effect for thicker plies. Hybrid specimens with thick carbon plies can therefore be used to measure the reference carbon/epoxy failure strain. The latter is significantly higher than the strain from all-carbon specimens in which there is an effect due to stress concentrations at the load introduction. Models are presented which illustrate the mechanisms responsible for the hybrid effect due to the constraint on failure at both the fibre and ply level. These results give a good understanding of how variability in the carbon fibre strengths can translate into hybrid effects in composite laminates.</p>