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Design and characterisation of advanced pseudo-ductile unidirectional thin-ply carbon/epoxy-glass/epoxy hybrid composites

Design and characterisation of advanced pseudo-ductile unidirectional thin-ply carbon/epoxy-glass/epoxy hybrid composites
Design and characterisation of advanced pseudo-ductile unidirectional thin-ply carbon/epoxy-glass/epoxy hybrid composites
A comprehensive set of thin-ply pseudo-ductile unidirectional interlayer hybrid composite materials comprising S-glass and a variety of thin carbon prepregs was designed and characterised. Unique elastic-yielding-hardening type stress-strain responses similar to those of ductile metals were achieved through fragmentation and stable pull-out of the carbon layers, generating a range of initial moduli, pseudo-yield strains, plateau stresses and pseudo ductile strains for the various configurations. The typical failure modes of thin-ply hybrid composites were highlighted in four series of stress-strain graphs obtained for the same materials with different carbon layer thicknesses. The predicted failure modes agreed well with the experimental results and demonstrated the merit of our two step design framework based on (i) simple analytical criteria and (ii) novel damage mode maps.
Damage and fracture mechanics, Delamination, Fragmentation, Mechanical testing, Pseudo-ductility, Thin-ply composites
0263-8223
362-370
Czél, Gergely
f6a95d06-75a3-4ca8-8912-098395a6eb80
Jalalvand, Meisam
21ef0df8-fc7c-4466-a2fc-ee98ed3408a2
Wisnom, Michael R.
93bec88e-5256-49f2-9869-5ac551e18d7a
Czél, Gergely
f6a95d06-75a3-4ca8-8912-098395a6eb80
Jalalvand, Meisam
21ef0df8-fc7c-4466-a2fc-ee98ed3408a2
Wisnom, Michael R.
93bec88e-5256-49f2-9869-5ac551e18d7a

Czél, Gergely, Jalalvand, Meisam and Wisnom, Michael R. (2016) Design and characterisation of advanced pseudo-ductile unidirectional thin-ply carbon/epoxy-glass/epoxy hybrid composites. Composite Structures, 143, 362-370. (doi:10.1016/j.compstruct.2016.02.010).

Record type: Article

Abstract

A comprehensive set of thin-ply pseudo-ductile unidirectional interlayer hybrid composite materials comprising S-glass and a variety of thin carbon prepregs was designed and characterised. Unique elastic-yielding-hardening type stress-strain responses similar to those of ductile metals were achieved through fragmentation and stable pull-out of the carbon layers, generating a range of initial moduli, pseudo-yield strains, plateau stresses and pseudo ductile strains for the various configurations. The typical failure modes of thin-ply hybrid composites were highlighted in four series of stress-strain graphs obtained for the same materials with different carbon layer thicknesses. The predicted failure modes agreed well with the experimental results and demonstrated the merit of our two step design framework based on (i) simple analytical criteria and (ii) novel damage mode maps.

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More information

e-pub ahead of print date: 9 February 2016
Published date: 20 May 2016
Keywords: Damage and fracture mechanics, Delamination, Fragmentation, Mechanical testing, Pseudo-ductility, Thin-ply composites

Identifiers

Local EPrints ID: 446070
URI: http://eprints.soton.ac.uk/id/eprint/446070
ISSN: 0263-8223
PURE UUID: b25204b0-bb91-4310-97ee-a5f6f186196c
ORCID for Meisam Jalalvand: ORCID iD orcid.org/0000-0003-4691-6252

Catalogue record

Date deposited: 20 Jan 2021 17:30
Last modified: 16 Sep 2021 11:14

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Contributors

Author: Gergely Czél
Author: Michael R. Wisnom

University divisions

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