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In situ statistical measurement of local morphology in carbon-epoxy composites using synchrotron X-ray computed tomography

In situ statistical measurement of local morphology in carbon-epoxy composites using synchrotron X-ray computed tomography
In situ statistical measurement of local morphology in carbon-epoxy composites using synchrotron X-ray computed tomography
Models are still deficient in accurately reproducing the mechanisms that trigger tensile failure in unidirectional composites, highlighting a lack of direct experimental evidence. In this study, emphasis is given to the identification of connections between local fibre misorientation, packing and Weibull strength distribution in causing tensile failure. Synchrotron Radiation Computed Tomography (SRCT) and automated image processing techniques are adopted to segment individual fibres from loaded carbon fibre coupons. Subtle indications in the misorientation of local damaged sites are assessed in novel statistical detail for systematic differentiation from non-damaged sites. It is observed that the morphology of the surrounding environment of damaged sites statistically differs from that of non-damaged sites, even though locally damaged sites (containing single or coupled breaks) do not exhibit a peculiar fibre packing arrangement. For adjacent coupled breaks, the statistical nature of fibre separation distances is also reported.
1359-835X
Rosini, Sebastian
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Mavrogordato, Mark N.
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Egorova, Olga
49e91576-5a13-476b-8dbd-6091d82ce907
Matthews, Emily S.
aaab52c6-3e01-44c9-ae35-649e07ab79d5
Jackson, Samuel E.
3839a081-74b9-4948-a581-4fe5bdf82197
Spearing, S. Mark
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Sinclair, Ian
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Rosini, Sebastian
c2de25ef-3781-4e3f-854d-abc41c8de141
Mavrogordato, Mark N.
f3e0879b-118a-463a-a130-1c890e9ab547
Egorova, Olga
49e91576-5a13-476b-8dbd-6091d82ce907
Matthews, Emily S.
aaab52c6-3e01-44c9-ae35-649e07ab79d5
Jackson, Samuel E.
3839a081-74b9-4948-a581-4fe5bdf82197
Spearing, S. Mark
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Sinclair, Ian
6005f6c1-f478-434e-a52d-d310c18ade0d

Rosini, Sebastian, Mavrogordato, Mark N., Egorova, Olga, Matthews, Emily S., Jackson, Samuel E., Spearing, S. Mark and Sinclair, Ian (2019) In situ statistical measurement of local morphology in carbon-epoxy composites using synchrotron X-ray computed tomography. Composites Part A: Applied Science and Manufacturing, 125. (doi:10.1016/j.compositesa.2019.105543).

Record type: Article

Abstract

Models are still deficient in accurately reproducing the mechanisms that trigger tensile failure in unidirectional composites, highlighting a lack of direct experimental evidence. In this study, emphasis is given to the identification of connections between local fibre misorientation, packing and Weibull strength distribution in causing tensile failure. Synchrotron Radiation Computed Tomography (SRCT) and automated image processing techniques are adopted to segment individual fibres from loaded carbon fibre coupons. Subtle indications in the misorientation of local damaged sites are assessed in novel statistical detail for systematic differentiation from non-damaged sites. It is observed that the morphology of the surrounding environment of damaged sites statistically differs from that of non-damaged sites, even though locally damaged sites (containing single or coupled breaks) do not exhibit a peculiar fibre packing arrangement. For adjacent coupled breaks, the statistical nature of fibre separation distances is also reported.

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Accepted/In Press date: 18 July 2019
e-pub ahead of print date: 20 July 2019
Published date: October 2019

Identifiers

Local EPrints ID: 433172
URI: https://eprints.soton.ac.uk/id/eprint/433172
ISSN: 1359-835X
PURE UUID: fb064322-b9f9-4c3e-99dd-96edccc9f971
ORCID for S. Mark Spearing: ORCID iD orcid.org/0000-0002-3059-2014

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Date deposited: 09 Aug 2019 16:30
Last modified: 17 Sep 2019 00:52

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