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

Tobias Laux; Khong Wui Gan; Janice M Barton; Ole T Thomsen

doi:10.1016/j.compositesa.2020.105864

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

Tobias Laux^*, Khong Wui Gan^*, Janice M Barton, Ole T Thomsen

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

26 Citations (Scopus)

134 Downloads (Pure)

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 are studied using open-hole specimens. Combined tension/compression-shear loading is 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 show 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 is observed under either loading regime. The experimental approach provides a new tool to investigate composite laminates under the full tension/compression-shear loading regime.

Original language	English
Article number	105864
Pages (from-to)	1-14
Number of pages	14
Journal	Composites Part A: Applied Science and Manufacturing
Volume	133
Early online date	6 Mar 2020
DOIs	https://doi.org/10.1016/j.compositesa.2020.105864
Publication status	Published - 6 Mar 2020

Keywords

A. Laminates
B. Multiaxial testing
B. Lay-up effects
B. Strength

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

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 tocombined 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 are studied using open-hole specimens. Combined tension/compression-shear loading is 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 show 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 is observed under either loading regime. The experimental approach provides a new tool to investigate composite laminates under the full tension/compression-shear loading regime.",

keywords = "A. Laminates, B. Multiaxial testing, B. Lay-up effects, B. Strength",

author = "Tobias Laux and {Wui Gan}, Khong and Barton, {Janice M} and Thomsen, {Ole T}",

year = "2020",

month = mar,

day = "6",

doi = "10.1016/j.compositesa.2020.105864",

language = "English",

volume = "133",

pages = "1--14",

journal = "Composites Part A: Applied Science and Manufacturing",

issn = "1359-835X",

publisher = "Elsevier Science",

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Ply thickness and fibre orientation effects in multidirectional composite laminates subjected to combined tension/compression and shear. / Laux, Tobias; Wui Gan, Khong; Barton, Janice M et al.
In: Composites Part A: Applied Science and Manufacturing, Vol. 133, 105864, 06.03.2020, p. 1-14.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

TY - JOUR

T1 - Ply thickness and fibre orientation effects in multidirectional composite laminates subjected to combined tension/compression and shear

AU - Laux, Tobias

AU - Wui Gan, Khong

AU - Barton, Janice M

AU - Thomsen, Ole T

PY - 2020/3/6

Y1 - 2020/3/6

N2 - 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 tocombined 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 are studied using open-hole specimens. Combined tension/compression-shear loading is 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 show 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 is observed under either loading regime. The experimental approach provides a new tool to investigate composite laminates under the full tension/compression-shear loading regime.

AB - 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 tocombined 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 are studied using open-hole specimens. Combined tension/compression-shear loading is 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 show 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 is observed under either loading regime. The experimental approach provides a new tool to investigate composite laminates under the full tension/compression-shear loading regime.

KW - A. Laminates

KW - B. Multiaxial testing

KW - B. Lay-up effects

KW - B. Strength

UR - http://dx.doi.org/10.1016/j.compositesa.2020.105864

U2 - 10.1016/j.compositesa.2020.105864

DO - 10.1016/j.compositesa.2020.105864

M3 - Article (Academic Journal)

SN - 1359-835X

VL - 133

SP - 1

EP - 14

JO - Composites Part A: Applied Science and Manufacturing

JF - Composites Part A: Applied Science and Manufacturing

M1 - 105864

ER -

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

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