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Is the low shear modulus of flax fibres an advantage for polymer reinforcement?
- Source :
- Materials Letters, Materials Letters, Elsevier, 2016, 185, pp.534-536. ⟨10.1016/j.matlet.2016.09.067⟩
- Publication Year :
- 2016
- Publisher :
- HAL CCSD, 2016.
-
Abstract
- Flax fibres are increasingly used as polymer reinforcement as an alternative to glass fibres. Indeed, flax has attractive assets (low density, low environmental footprint, high tensile mechanical properties, etc.) but also some limits that need to be investigated. This study gives a comparison between the in-plane shear behaviour of flax/epoxy and glass/epoxy unidirectional laminates. For equivalent volume fractions, the shear stiffness of biocomposites is significantly lower than glass ones. This result is explained by the microstructure and anisotropic properties of flax fibres wall components. However, the micromechanical analytical model of in-plane shear strength demonstrates that the low shear modulus of flax fibres (Gf LT =2500 and 29,700 MPa for flax and glass fibre, respectively) is an advantage since it limits strain concentration within plies by reducing potential cracking. Finally, due to the low failure strain of flax composites, our study show that a 2% strain limit must be chosen for a suitable comparison of flax and glass composites shear strength.
- Subjects :
- Materials science
Glass fiber
Polymeric composite
02 engineering and technology
010402 general chemistry
01 natural sciences
Shear modulus
Ultimate tensile strength
Shear strength
General Materials Science
Composite material
chemistry.chemical_classification
Mechanical Engineering
Elastic properties
Polymer
Epoxy
[CHIM.MATE]Chemical Sciences/Material chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microstructure
0104 chemical sciences
Shear (sheet metal)
chemistry
Mechanics of Materials
visual_art
visual_art.visual_art_medium
Flax fibres
0210 nano-technology
Subjects
Details
- Language :
- English
- ISSN :
- 0167577X
- Database :
- OpenAIRE
- Journal :
- Materials Letters, Materials Letters, Elsevier, 2016, 185, pp.534-536. ⟨10.1016/j.matlet.2016.09.067⟩
- Accession number :
- edsair.doi.dedup.....a37576390f0bd7f31cd9da72ddfccb48