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Ply thickness and fibre orientation effects in multidirectional composite laminates subjected to combined tension/compression and shear

Ply thickness and fibre orientation effects in multidirectional composite laminates subjected to combined tension/compression and shear
Ply thickness and fibre orientation effects in multidirectional composite laminates subjected to combined tension/compression and shear
The effects of laminate lay-up and multiaxial loading on the failure of multidirectional laminates can be significant. Thus, ply thickness and fibre orientation effects in quasi-isotropic carbon/epoxy laminates subjected to combined tension-shear and compression-shear loading are investigated. Three laminate lay-ups with equivalent thickness and homogenised elastic properties, but with different ply thicknesses and ply orientation angles were studied using open-hole specimens. Combined tension/compression-shear loading was applied using a new Modified Arcan Fixture (MAF). A methodology for identifying the failure behaviour based on stereo Digital Image Correlation (DIC) is devised. The results showed that ply thickness has a strong effect on the failure behaviour in combined tension-shear, whereas the effect is small in compression-shear loading. No significant effect of the relative fibre orientation angles was observed under either loading regime. The experimental approach provides a new tool to investigate composite laminates under the full tension/compression-shear loading regime.
A. Laminates, B. Lay-up effects, B. Multiaxial testing, B. Strength
1359-835X
Laux, Tobias
cffe8612-be2f-4fed-a3f9-a87e18099826
Gan, Khong
b0c1e988-d375-4bbc-acdc-c77a6da1f904
Barton, Janice
9e35bebb-2185-4d16-a1bc-bb8f20e06632
Thomsen, Ole
f3e60b22-a09f-4d58-90da-d58e37d68047
Laux, Tobias
cffe8612-be2f-4fed-a3f9-a87e18099826
Gan, Khong
b0c1e988-d375-4bbc-acdc-c77a6da1f904
Barton, Janice
9e35bebb-2185-4d16-a1bc-bb8f20e06632
Thomsen, Ole
f3e60b22-a09f-4d58-90da-d58e37d68047

Laux, Tobias, Gan, Khong, Barton, Janice and Thomsen, Ole (2020) Ply thickness and fibre orientation effects in multidirectional composite laminates subjected to combined tension/compression and shear. Composites Part A: Applied Science and Manufacturing, 133, [105864]. (doi:10.1016/j.compositesa.2020.105864).

Record type: Article

Abstract

The effects of laminate lay-up and multiaxial loading on the failure of multidirectional laminates can be significant. Thus, ply thickness and fibre orientation effects in quasi-isotropic carbon/epoxy laminates subjected to combined tension-shear and compression-shear loading are investigated. Three laminate lay-ups with equivalent thickness and homogenised elastic properties, but with different ply thicknesses and ply orientation angles were studied using open-hole specimens. Combined tension/compression-shear loading was applied using a new Modified Arcan Fixture (MAF). A methodology for identifying the failure behaviour based on stereo Digital Image Correlation (DIC) is devised. The results showed that ply thickness has a strong effect on the failure behaviour in combined tension-shear, whereas the effect is small in compression-shear loading. No significant effect of the relative fibre orientation angles was observed under either loading regime. The experimental approach provides a new tool to investigate composite laminates under the full tension/compression-shear loading regime.

Text
Laux_2020_Ply thickness and fibre orientation effects in multidirectional composite laminates_ACCEPTED MS - Accepted Manuscript
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More information

Accepted/In Press date: 3 March 2020
e-pub ahead of print date: 6 March 2020
Keywords: A. Laminates, B. Lay-up effects, B. Multiaxial testing, B. Strength

Identifiers

Local EPrints ID: 438768
URI: http://eprints.soton.ac.uk/id/eprint/438768
ISSN: 1359-835X
PURE UUID: 8429cf64-38dd-406a-a738-53b4dabf3fa3

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Date deposited: 24 Mar 2020 17:30
Last modified: 25 Nov 2021 19:32

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Contributors

Author: Tobias Laux
Author: Khong Gan
Author: Janice Barton
Author: Ole Thomsen

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