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Combining fibre rotation and fragmentation to achieve pseudo-ductile CFRP laminates

Combining fibre rotation and fragmentation to achieve pseudo-ductile CFRP laminates
Combining fibre rotation and fragmentation to achieve pseudo-ductile CFRP laminates
The pseudo-ductility shown by thin ply angle-ply laminates has been coupled with the gradual fragmentation of unidirectional (0°) plies to yield a metal-like stress-strain curve for a [±θm/0n]s laminate. This has led to a significant increase in pseudo-ductility than either angle-ply fibre rotation or 0° fragmentation have shown previously. Analytical modelling has been developed that accounts for the damage processes that contribute to the gradual failure of the 0° plies and predictions have been made taking into account the fragmentation, delamination and eventual failure of the laminate. Experimental results are shown to correlate well with the modelling, despite some variability in the responses. Analysis via X-ray computed tomography of tested specimens shows the progression of the fragmentation and delamination damage modes prior to laminate failure and provides an in-depth understanding of the process that leads to the demonstrated pseudo-ductile strains.
analytical modelling, delamination, gradual failure, thin ply
0263-8223
155-166
Fuller, J.D.
1cc7f516-492a-4cd4-ad6b-854045ad81fe
Jalalvand, M.
21ef0df8-fc7c-4466-a2fc-ee98ed3408a2
Wisnom, M.R.
655f9d97-0d4c-4654-9b0e-3e5150991e42
Fuller, J.D.
1cc7f516-492a-4cd4-ad6b-854045ad81fe
Jalalvand, M.
21ef0df8-fc7c-4466-a2fc-ee98ed3408a2
Wisnom, M.R.
655f9d97-0d4c-4654-9b0e-3e5150991e42

Fuller, J.D., Jalalvand, M. and Wisnom, M.R. (2016) Combining fibre rotation and fragmentation to achieve pseudo-ductile CFRP laminates. Composite Structures, 142, 155-166. (doi:10.1016/j.compstruct.2016.01.073).

Record type: Article

Abstract

The pseudo-ductility shown by thin ply angle-ply laminates has been coupled with the gradual fragmentation of unidirectional (0°) plies to yield a metal-like stress-strain curve for a [±θm/0n]s laminate. This has led to a significant increase in pseudo-ductility than either angle-ply fibre rotation or 0° fragmentation have shown previously. Analytical modelling has been developed that accounts for the damage processes that contribute to the gradual failure of the 0° plies and predictions have been made taking into account the fragmentation, delamination and eventual failure of the laminate. Experimental results are shown to correlate well with the modelling, despite some variability in the responses. Analysis via X-ray computed tomography of tested specimens shows the progression of the fragmentation and delamination damage modes prior to laminate failure and provides an in-depth understanding of the process that leads to the demonstrated pseudo-ductile strains.

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More information

e-pub ahead of print date: 22 January 2016
Published date: 10 May 2016
Keywords: analytical modelling, delamination, gradual failure, thin ply

Identifiers

Local EPrints ID: 446765
URI: http://eprints.soton.ac.uk/id/eprint/446765
ISSN: 0263-8223
PURE UUID: ad1053d7-ef97-4e89-9724-32832265426c
ORCID for M. Jalalvand: ORCID iD orcid.org/0000-0003-4691-6252

Catalogue record

Date deposited: 22 Feb 2021 17:30
Last modified: 23 Feb 2021 02:58

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