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Comparative design of E-glass and flax structures based on reliability

Comparative design of E-glass and flax structures based on reliability
Comparative design of E-glass and flax structures based on reliability
Flax fibres are often documented as having equivalent properties to E-glass ones. Based on these comparisons they have been proposed as a suitable replacement for E-glass in structural applications. However, some recent experimental studies demonstrate that flax behaves differently to conventional composites at the structural scale, which indicates that the capabilities of flax need to be better understood at this scale. This paper therefore uses reliability analysis to generate flax structures with an equivalent safety to those in E-glass, accounting for the change in behaviour. An extensive literature review of flax laminate mechanical properties is performed to define their range and variations. These values are used to simulate probabilities of failure which demonstrate that flax structure needs to be 2.4 times heavier than the E-glass structures to have an equivalent safety. It concludes that flax fibres might be used in some applications but cannot replace E-glass in volume constrained structures.
natural fibres, strength, analytical modelling, numerical analysis, statistical properties, mechanical properties
0263-8223
1-14
Blanchard, J.M.F.A.
bdbffd26-3f7d-4320-a6a3-d061609cec1b
Sobey, A.J.
e850606f-aa79-4c99-8682-2cfffda3cd28
Blanchard, J.M.F.A.
bdbffd26-3f7d-4320-a6a3-d061609cec1b
Sobey, A.J.
e850606f-aa79-4c99-8682-2cfffda3cd28

Blanchard, J.M.F.A. and Sobey, A.J. (2019) Comparative design of E-glass and flax structures based on reliability. Composite Structures, 225, 1-14, [111037]. (doi:10.1016/j.compstruct.2019.111037).

Record type: Article

Abstract

Flax fibres are often documented as having equivalent properties to E-glass ones. Based on these comparisons they have been proposed as a suitable replacement for E-glass in structural applications. However, some recent experimental studies demonstrate that flax behaves differently to conventional composites at the structural scale, which indicates that the capabilities of flax need to be better understood at this scale. This paper therefore uses reliability analysis to generate flax structures with an equivalent safety to those in E-glass, accounting for the change in behaviour. An extensive literature review of flax laminate mechanical properties is performed to define their range and variations. These values are used to simulate probabilities of failure which demonstrate that flax structure needs to be 2.4 times heavier than the E-glass structures to have an equivalent safety. It concludes that flax fibres might be used in some applications but cannot replace E-glass in volume constrained structures.

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Blanchard et al. corrected paper - Accepted Manuscript
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More information

Accepted/In Press date: 22 May 2019
e-pub ahead of print date: 7 June 2019
Published date: 1 October 2019
Keywords: natural fibres, strength, analytical modelling, numerical analysis, statistical properties, mechanical properties

Identifiers

Local EPrints ID: 431245
URI: http://eprints.soton.ac.uk/id/eprint/431245
ISSN: 0263-8223
PURE UUID: 9f36fd4c-9c80-414f-9308-654bafa55659
ORCID for A.J. Sobey: ORCID iD orcid.org/0000-0001-6880-8338

Catalogue record

Date deposited: 28 May 2019 16:30
Last modified: 07 Oct 2020 06:13

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