Global load-sharing model for unidirectional hybrid fibre-reinforced composites

Yentl Swolfs; R. M. McMeeking; V. P. Rajan; F. W. Zok; Ignaas Verpoest; Larissa Gorbatikh

doi:10.1016/j.jmps.2015.08.009

Global load-sharing model for unidirectional hybrid fibre-reinforced composites

Yentl Swolfs^*
, R. M. McMeeking
, V. P. Rajan
, F. W. Zok
, Ignaas Verpoest
, Larissa Gorbatikh

^*Corresponding author for this work

KU Leuven
University of Bath
University of Oxford
King's College London
Department of Materials Engineering
University of California at Santa Barbara

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

Abstract

A promising strategy to increase the tensile failure strain of carbon fibre-reinforced composites is to hybridise carbon fibres with other, higher-elongation fibres. The resulting increase in failure strain is known as the hybrid effect. In the present article, a global load-sharing model for hybrid composites is developed and used to carry out a parametric study for carbon/glass hybrids. Hybrid effects of up to 15% increase in failure strain are predicted, corresponding reasonably well to literature data. Scatter in the carbon fibre strength is shown to be crucial for the hybrid effect, while the scatter in glass fibre strength is much less important. In contrast to reports in earlier literature, the ratio of failure strains of the two fibres has only a small influence on the hybrid effect. The results provide guidelines for designing optimal hybrid composites.

Original language	English
Pages (from-to)	380-394
Number of pages	15
Journal	Journal of the Mechanics and Physics of Solids
Volume	84
Early online date	18 Aug 2015
DOIs	https://doi.org/10.1016/j.jmps.2015.08.009
Publication status	Published - Nov 2015

Bibliographical note

Date of Acceptance: 17/08/2015

Acknowledgements
The work leading to this publication has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under the topic NMP-2009-2.5-1, as part of the project HIVOCOMP (Grant agreement no. 246389). The authors thank the Agency for Innovation by Science and Technology in Flanders (IWT) for the grant of YS. IV holds the Toray Chair in Composite Materials at KU Leuven and acknowledges its support for this work. YS wishes to thank Professor William Curtin for bringing the idea of an extended GLS model to his attention.

Keywords

A. Strengthening and mechanisms
B. Fibre-reinforced composite material
C. Hybrid composites
C. Probability and statistics

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10.1016/j.jmps.2015.08.009Licence: Unspecified

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abstract = "A promising strategy to increase the tensile failure strain of carbon fibre-reinforced composites is to hybridise carbon fibres with other, higher-elongation fibres. The resulting increase in failure strain is known as the hybrid effect. In the present article, a global load-sharing model for hybrid composites is developed and used to carry out a parametric study for carbon/glass hybrids. Hybrid effects of up to 15\% increase in failure strain are predicted, corresponding reasonably well to literature data. Scatter in the carbon fibre strength is shown to be crucial for the hybrid effect, while the scatter in glass fibre strength is much less important. In contrast to reports in earlier literature, the ratio of failure strains of the two fibres has only a small influence on the hybrid effect. The results provide guidelines for designing optimal hybrid composites.",

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AU - Verpoest, Ignaas

AU - Gorbatikh, Larissa

N1 - Date of Acceptance: 17/08/2015 Acknowledgements The work leading to this publication has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under the topic NMP-2009-2.5-1, as part of the project HIVOCOMP (Grant agreement no. 246389). The authors thank the Agency for Innovation by Science and Technology in Flanders (IWT) for the grant of YS. IV holds the Toray Chair in Composite Materials at KU Leuven and acknowledges its support for this work. YS wishes to thank Professor William Curtin for bringing the idea of an extended GLS model to his attention.

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N2 - A promising strategy to increase the tensile failure strain of carbon fibre-reinforced composites is to hybridise carbon fibres with other, higher-elongation fibres. The resulting increase in failure strain is known as the hybrid effect. In the present article, a global load-sharing model for hybrid composites is developed and used to carry out a parametric study for carbon/glass hybrids. Hybrid effects of up to 15% increase in failure strain are predicted, corresponding reasonably well to literature data. Scatter in the carbon fibre strength is shown to be crucial for the hybrid effect, while the scatter in glass fibre strength is much less important. In contrast to reports in earlier literature, the ratio of failure strains of the two fibres has only a small influence on the hybrid effect. The results provide guidelines for designing optimal hybrid composites.

AB - A promising strategy to increase the tensile failure strain of carbon fibre-reinforced composites is to hybridise carbon fibres with other, higher-elongation fibres. The resulting increase in failure strain is known as the hybrid effect. In the present article, a global load-sharing model for hybrid composites is developed and used to carry out a parametric study for carbon/glass hybrids. Hybrid effects of up to 15% increase in failure strain are predicted, corresponding reasonably well to literature data. Scatter in the carbon fibre strength is shown to be crucial for the hybrid effect, while the scatter in glass fibre strength is much less important. In contrast to reports in earlier literature, the ratio of failure strains of the two fibres has only a small influence on the hybrid effect. The results provide guidelines for designing optimal hybrid composites.

KW - A. Strengthening and mechanisms

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KW - C. Probability and statistics

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JO - Journal of the Mechanics and Physics of Solids

JF - Journal of the Mechanics and Physics of Solids

ER -

Global load-sharing model for unidirectional hybrid fibre-reinforced composites

Abstract

Bibliographical note

Keywords

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