Reduced notch sensitivity in pseudo-ductile CFRP thin ply angle-ply laminates with central 0° plies
Reduced notch sensitivity in pseudo-ductile CFRP thin ply angle-ply laminates with central 0° plies
This paper presents an experimental investigation on the unnotched and open-hole tensile behaviour of pseudo-ductile thin ply angle-ply carbon fibre/epoxy laminates with central 0° plies. Laminates with two different configurations of [±265/0]s and [±252/0]s were designed and tested under unnotched and open-hole tensile loading. Metal-like tensile stress-strain curves with a plateau were observed in both unnotched configurations. The open-hole net-section strength of the [±252/0]s laminate attained 96% of the unnotched “yield” strength. Digital image correlation and X-ray CT-scan images showed that the same damage mechanisms of central 0° ply fragmentation and local dispersed delamination observed in unnotched pseudo-ductile laminates were present in the open-hole specimens of the same configuration. These damage mechanisms caused stress redistribution around the hole and reduced the notch sensitivity in pseudo-ductile laminates under open-hole tensile loading. The main factors governing the open-hole performance are also discussed.
B. Delamination, B. Fragmentation, B. Stress concentrations, C. Damage mechanics
62-72
Wu, Xun
1e74bd51-8916-49ea-883b-371108be7ea5
Fuller, Jonathan D.
9c92d162-1b1f-4458-8997-75f99517d07f
Longana, Marco L.
43a4dd27-a29f-4538-8345-c52350001511
Wisnom, Michael R.
93bec88e-5256-49f2-9869-5ac551e18d7a
Wu, Xun
1e74bd51-8916-49ea-883b-371108be7ea5
Fuller, Jonathan D.
9c92d162-1b1f-4458-8997-75f99517d07f
Longana, Marco L.
43a4dd27-a29f-4538-8345-c52350001511
Wisnom, Michael R.
93bec88e-5256-49f2-9869-5ac551e18d7a
Wu, Xun, Fuller, Jonathan D., Longana, Marco L. and Wisnom, Michael R.
(2018)
Reduced notch sensitivity in pseudo-ductile CFRP thin ply angle-ply laminates with central 0° plies.
Composites Part A: Applied Science and Manufacturing, 111, .
(doi:10.1016/j.compositesa.2018.05.011).
Abstract
This paper presents an experimental investigation on the unnotched and open-hole tensile behaviour of pseudo-ductile thin ply angle-ply carbon fibre/epoxy laminates with central 0° plies. Laminates with two different configurations of [±265/0]s and [±252/0]s were designed and tested under unnotched and open-hole tensile loading. Metal-like tensile stress-strain curves with a plateau were observed in both unnotched configurations. The open-hole net-section strength of the [±252/0]s laminate attained 96% of the unnotched “yield” strength. Digital image correlation and X-ray CT-scan images showed that the same damage mechanisms of central 0° ply fragmentation and local dispersed delamination observed in unnotched pseudo-ductile laminates were present in the open-hole specimens of the same configuration. These damage mechanisms caused stress redistribution around the hole and reduced the notch sensitivity in pseudo-ductile laminates under open-hole tensile loading. The main factors governing the open-hole performance are also discussed.
Text
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Accepted/In Press date: 11 May 2018
e-pub ahead of print date: 25 May 2018
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Publisher Copyright:
© 2018
Keywords:
B. Delamination, B. Fragmentation, B. Stress concentrations, C. Damage mechanics
Identifiers
Local EPrints ID: 505707
URI: http://eprints.soton.ac.uk/id/eprint/505707
ISSN: 1359-835X
PURE UUID: 01b159fb-ab6f-4b27-8d51-4e6bde0d4347
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Date deposited: 16 Oct 2025 16:55
Last modified: 17 Oct 2025 02:21
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Contributors
Author:
Xun Wu
Author:
Jonathan D. Fuller
Author:
Marco L. Longana
Author:
Michael R. Wisnom
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