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

F. Gentles, J. Anderson, J.L. Thomason

Research output: Contribution to conferencePaper

Abstract

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.
LanguageEnglish
Number of pages10
Publication statusPublished - 7 Jun 2010
Event14th European Conference on Composite Materials, ECCM14 - Budapest, Hungary
Duration: 7 Jun 201010 Jun 2010

Conference

Conference14th European Conference on Composite Materials, ECCM14
CityBudapest, Hungary
Period7/06/1010/06/10

Fingerprint

Natural fibers
Thermoelastic
Transverse
Composite
Fiber
Flax
Fibers
Composite materials
Anisotropy
Thermoanalysis
Mechanical properties
Thermal Analysis
Empirical Model
Epoxy
Mechanical Behavior
Mechanical Properties
Angle
Predict
Necessary
Modeling

Keywords

  • natural fibres
  • thermoelastic anisotropy
  • micromechanical modelling
  • semi-empirical models

Cite this

Gentles, F., Anderson, J., & Thomason, J. L. (2010). Characterisation of the transverse thermoelastic properties of natural fibres used in composites. Paper presented at 14th European Conference on Composite Materials, ECCM14, Budapest, Hungary, .
Gentles, F. ; Anderson, J. ; Thomason, J.L. / Characterisation of the transverse thermoelastic properties of natural fibres used in composites. Paper presented at 14th European Conference on Composite Materials, ECCM14, Budapest, Hungary, .10 p.
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Gentles, F, Anderson, J & Thomason, JL 2010, 'Characterisation of the transverse thermoelastic properties of natural fibres used in composites' Paper presented at 14th European Conference on Composite Materials, ECCM14, Budapest, Hungary, 7/06/10 - 10/06/10, .

Characterisation of the transverse thermoelastic properties of natural fibres used in composites. / Gentles, F.; Anderson, J.; Thomason, J.L.

2010. Paper presented at 14th European Conference on Composite Materials, ECCM14, Budapest, Hungary, .

Research output: Contribution to conferencePaper

TY - CONF

T1 - Characterisation of the transverse thermoelastic properties of natural fibres used in composites

AU - Gentles, F.

AU - Anderson, J.

AU - Thomason, J.L.

PY - 2010/6/7

Y1 - 2010/6/7

N2 - 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.

AB - 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.

KW - natural fibres

KW - thermoelastic anisotropy

KW - micromechanical modelling

KW - semi-empirical models

UR - http://eccm14.pt.bme.hu/

M3 - Paper

ER -

Gentles F, Anderson J, Thomason JL. Characterisation of the transverse thermoelastic properties of natural fibres used in composites. 2010. Paper presented at 14th European Conference on Composite Materials, ECCM14, Budapest, Hungary, .