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Hybrid effects in thin ply carbon/glass unidirectional laminates: accurate experimental determination and prediction

Hybrid effects in thin ply carbon/glass unidirectional laminates: accurate experimental determination and prediction
Hybrid effects in thin ply carbon/glass unidirectional laminates: accurate experimental determination and prediction
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.
A. carbon fibres, A. laminates, B. fracture, B. fragmentation, hybrid effect
1359-835X
131-139
Wisnom, M.R.
655f9d97-0d4c-4654-9b0e-3e5150991e42
Czél, G.
f6a95d06-75a3-4ca8-8912-098395a6eb80
Swolfs, Y.
d346a5b6-6d57-4e5e-b8e1-1b02a73d00eb
Jalalvand, M.
21ef0df8-fc7c-4466-a2fc-ee98ed3408a2
Gorbatikh, L.
8fa8ab94-d030-41e0-9817-ea53726a2926
Verpoest, I.
c43039e5-3249-440a-a2d1-5bf2dceb8c7a
Wisnom, M.R.
655f9d97-0d4c-4654-9b0e-3e5150991e42
Czél, G.
f6a95d06-75a3-4ca8-8912-098395a6eb80
Swolfs, Y.
d346a5b6-6d57-4e5e-b8e1-1b02a73d00eb
Jalalvand, M.
21ef0df8-fc7c-4466-a2fc-ee98ed3408a2
Gorbatikh, L.
8fa8ab94-d030-41e0-9817-ea53726a2926
Verpoest, I.
c43039e5-3249-440a-a2d1-5bf2dceb8c7a

Wisnom, M.R., Czél, G., Swolfs, Y., Jalalvand, M., Gorbatikh, L. and Verpoest, I. (2016) Hybrid effects in thin ply carbon/glass unidirectional laminates: accurate experimental determination and prediction. Composites Part A: Applied Science and Manufacturing, 88, 131-139. (doi:10.1016/j.compositesa.2016.04.014).

Record type: Article

Abstract

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.

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More information

Published date: 30 September 2016
Keywords: A. carbon fibres, A. laminates, B. fracture, B. fragmentation, hybrid effect

Identifiers

Local EPrints ID: 446778
URI: http://eprints.soton.ac.uk/id/eprint/446778
ISSN: 1359-835X
PURE UUID: d1f6bc89-3e0a-4445-a257-88a39afd10bf
ORCID for M. Jalalvand: ORCID iD orcid.org/0000-0003-4691-6252

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Date deposited: 22 Feb 2021 17:32
Last modified: 16 Sep 2021 11:14

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Contributors

Author: M.R. Wisnom
Author: G. Czél
Author: Y. Swolfs
Author: M. Jalalvand ORCID iD
Author: L. Gorbatikh
Author: I. Verpoest

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