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Characterisation of the transverse thermoelastic properties of natural fibres used in composites

Gentles, F. and Anderson, J. and Thomason, J.L. (2010) Characterisation of the transverse thermoelastic properties of natural fibres used in composites. In: 14th European Conference on Composite Materials, ECCM14, 2010-06-07 - 2010-06-10, Budapest, Hungary.

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To predict the properties of a composite, it is necessary to identify the properties of the constituent materials, especially those of the fibre. Mechanical properties of natural fibres (NF) are anisotropic and cannot be characterised in the same way as isotropic materials. Therefore further characterisation of the natural fibres is needed to determine their transverse thermo-mechanical behaviour. An understanding of the thermoelastic anisotropy of natural fibres is important for defining their performance in potential composite applications. In this study, thermoelastic properties of flax and sisal fibres where determined through a combination of experimental measurements and micromechanical modelling. Dynamic mechanical thermal analysis and thermal mechanical analysis techniques were employed to characterise model unidirectional NF-epoxy composites over a range off-axis loading angles. These results were input into a number of micromechanical and semi-empirical models to determine the transverse and longitudinal thermoelastic properties of the fibre. The results confirm the high degree of anisotropy in properties of the flax and sisal fibres.

Item type: Conference or Workshop Item (Paper)
ID code: 27074
Keywords: natural fibres, thermoelastic anisotropy, micromechanical modelling, semi-empirical models, Mechanical engineering and machinery, Mechanical Engineering, Mechanics of Materials, Biomaterials, Ceramics and Composites, Computational Mechanics, Modelling and Simulation
Subjects: Technology > Mechanical engineering and machinery
Department: Faculty of Engineering > Mechanical and Aerospace Engineering
Depositing user: Ms Katrina May
Date Deposited: 30 Aug 2010 13:03
Last modified: 24 Jul 2015 09:48
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