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Pseudo-ductility in intermingled carbon/glass hybrid composites with highly aligned discontinuous fibres

Pseudo-ductility in intermingled carbon/glass hybrid composites with highly aligned discontinuous fibres
Pseudo-ductility in intermingled carbon/glass hybrid composites with highly aligned discontinuous fibres
The aim of this research is to manufacture intermingled hybrid composites using aligned discontinuous fibres to achieve pseudo-ductility. Hybrid composites, made with different types of fibres that provide a balanced suite of modulus, strength and ductility, allow avoiding catastrophic failure that is a key limitation of composites. Two different material combinations of high strength carbon/E-glass and high modulus carbon/E-glass were selected. Several highly aligned and well dispersed short fibre hybrid composites with different carbon/glass ratios were manufactured and tested in tension in order to investigate the carbon ratio effect on the stress–strain curve. Good pseudo-ductile responses were obtained from the high modulus carbon/E-glass composites due to the fragmentation of the carbon fibres. The experimental results were also compared with an analytical solution. The intermingled hybrid composite with 0.25 relative carbon ratio gave the maximum pseudo-ductile strain, 1.1%, with a 110 GPa tensile modulus. Moreover, the initial modulus of the intermingled hybrids with 0.4 relative carbon ratio is 134 GPa, 3.5 times higher than that of E-glass/epoxy composites. The stress–strain curve shows a clear “yield point” at 441 MPa and a well dispersed and gradual damage process.
1359-835X
35-44
Yu, Hana
5512fdbb-42be-4e9b-b9cd-990a81174fa6
Longana, Marco L.
43a4dd27-a29f-4538-8345-c52350001511
Jalalvand, Meisam
21ef0df8-fc7c-4466-a2fc-ee98ed3408a2
Wisnom, Michael R.
93bec88e-5256-49f2-9869-5ac551e18d7a
Potter, Kevin D.
c13b1a00-1c83-42a8-94df-a263c7f2a7da
Yu, Hana
5512fdbb-42be-4e9b-b9cd-990a81174fa6
Longana, Marco L.
43a4dd27-a29f-4538-8345-c52350001511
Jalalvand, Meisam
21ef0df8-fc7c-4466-a2fc-ee98ed3408a2
Wisnom, Michael R.
93bec88e-5256-49f2-9869-5ac551e18d7a
Potter, Kevin D.
c13b1a00-1c83-42a8-94df-a263c7f2a7da

Yu, Hana, Longana, Marco L., Jalalvand, Meisam, Wisnom, Michael R. and Potter, Kevin D. (2015) Pseudo-ductility in intermingled carbon/glass hybrid composites with highly aligned discontinuous fibres. Composites Part A: Applied Science and Manufacturing, 73, 35-44. ().

Record type: Article

Abstract

The aim of this research is to manufacture intermingled hybrid composites using aligned discontinuous fibres to achieve pseudo-ductility. Hybrid composites, made with different types of fibres that provide a balanced suite of modulus, strength and ductility, allow avoiding catastrophic failure that is a key limitation of composites. Two different material combinations of high strength carbon/E-glass and high modulus carbon/E-glass were selected. Several highly aligned and well dispersed short fibre hybrid composites with different carbon/glass ratios were manufactured and tested in tension in order to investigate the carbon ratio effect on the stress–strain curve. Good pseudo-ductile responses were obtained from the high modulus carbon/E-glass composites due to the fragmentation of the carbon fibres. The experimental results were also compared with an analytical solution. The intermingled hybrid composite with 0.25 relative carbon ratio gave the maximum pseudo-ductile strain, 1.1%, with a 110 GPa tensile modulus. Moreover, the initial modulus of the intermingled hybrids with 0.4 relative carbon ratio is 134 GPa, 3.5 times higher than that of E-glass/epoxy composites. The stress–strain curve shows a clear “yield point” at 441 MPa and a well dispersed and gradual damage process.

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Accepted/In Press date: 14 February 2015
e-pub ahead of print date: 4 March 2015
Published date: 1 June 2015

Identifiers

Local EPrints ID: 445016
URI: http://eprints.soton.ac.uk/id/eprint/445016
DOI:
ISSN: 1359-835X
PURE UUID: ddf0c395-915c-4d7e-8cd4-a8f6ede045a0

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Date deposited: 18 Nov 2020 13:16
Last modified: 18 Nov 2020 13:16

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Contributors

Author: Hana Yu
Author: Marco L. Longana
Author: Meisam Jalalvand
Author: Michael R. Wisnom
Author: Kevin D. Potter

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