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Synchrotron radiation computed tomography for experimental validation of a tensile strength model for unidirectional fibre-reinforced composites

Synchrotron radiation computed tomography for experimental validation of a tensile strength model for unidirectional fibre-reinforced composites
Synchrotron radiation computed tomography for experimental validation of a tensile strength model for unidirectional fibre-reinforced composites
Synchrotron radiation computed tomography has been used to analyse fibre break accumulation in unidirectional composites loaded in tension. The data are compared to model predictions. The model only slightly overestimated the composite failure strain, but predictions of fibre break density were too high, which can be mainly attributed to errors in the Weibull distribution. Both the number and percentage of interacting fibre break clusters were under-predicted by the model. This was attributed to an underestimation of stress concentrations in the model. While the experimental observations revealed mainly co-planar clusters, the model predicted mainly diffuse clusters. The experiments showed that the clusters did grow any further after their formation, while the model predicted a gradual development. Both local and dynamic stress concentrations were hypothesised to be key features for further exploration. The discrepancies identified, inform suggestions for directions advancing the state-of-the-art strength models of UD composites.
A: polymer-matrix composites (PMCs), B: stress concentrations, C: statistical properties/methods, D: radiography
1359-835X
106-113
Swolfs, Y.
d346a5b6-6d57-4e5e-b8e1-1b02a73d00eb
Morton, H.
dc4b3249-9a5d-4e40-b93a-0bf234c15db3
Scott, A.E.
37356844-61d7-450e-b33e-032c2c41903b
Gorbatikh, L.
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Reed, P.A.S.
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Sinclair, I.
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Spearing, S.M.
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Verpoest, I.
c43039e5-3249-440a-a2d1-5bf2dceb8c7a
Swolfs, Y.
d346a5b6-6d57-4e5e-b8e1-1b02a73d00eb
Morton, H.
dc4b3249-9a5d-4e40-b93a-0bf234c15db3
Scott, A.E.
37356844-61d7-450e-b33e-032c2c41903b
Gorbatikh, L.
8fa8ab94-d030-41e0-9817-ea53726a2926
Reed, P.A.S.
8b79d87f-3288-4167-bcfc-c1de4b93ce17
Sinclair, I.
6005f6c1-f478-434e-a52d-d310c18ade0d
Spearing, S.M.
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Verpoest, I.
c43039e5-3249-440a-a2d1-5bf2dceb8c7a

Swolfs, Y., Morton, H., Scott, A.E., Gorbatikh, L., Reed, P.A.S., Sinclair, I., Spearing, S.M. and Verpoest, I. (2015) Synchrotron radiation computed tomography for experimental validation of a tensile strength model for unidirectional fibre-reinforced composites. Composites Part A: Applied Science and Manufacturing, 77, 106-113. (doi:10.1016/j.compositesa.2015.06.018).

Record type: Article

Abstract

Synchrotron radiation computed tomography has been used to analyse fibre break accumulation in unidirectional composites loaded in tension. The data are compared to model predictions. The model only slightly overestimated the composite failure strain, but predictions of fibre break density were too high, which can be mainly attributed to errors in the Weibull distribution. Both the number and percentage of interacting fibre break clusters were under-predicted by the model. This was attributed to an underestimation of stress concentrations in the model. While the experimental observations revealed mainly co-planar clusters, the model predicted mainly diffuse clusters. The experiments showed that the clusters did grow any further after their formation, while the model predicted a gradual development. Both local and dynamic stress concentrations were hypothesised to be key features for further exploration. The discrepancies identified, inform suggestions for directions advancing the state-of-the-art strength models of UD composites.

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Accepted/In Press date: 17 June 2015
e-pub ahead of print date: 25 June 2015
Published date: October 2015
Keywords: A: polymer-matrix composites (PMCs), B: stress concentrations, C: statistical properties/methods, D: radiography
Organisations: Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 378789
URI: http://eprints.soton.ac.uk/id/eprint/378789
ISSN: 1359-835X
PURE UUID: 78befdf9-78f8-484d-9399-b4361f0084f3
ORCID for P.A.S. Reed: ORCID iD orcid.org/0000-0002-2258-0347
ORCID for S.M. Spearing: ORCID iD orcid.org/0000-0002-3059-2014

Catalogue record

Date deposited: 15 Jul 2015 09:37
Last modified: 17 Dec 2019 02:00

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Contributors

Author: Y. Swolfs
Author: H. Morton
Author: A.E. Scott
Author: L. Gorbatikh
Author: P.A.S. Reed ORCID iD
Author: I. Sinclair
Author: S.M. Spearing ORCID iD
Author: I. Verpoest

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