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Quasi-static behaviour and damage assessment of flax/epoxy composites
Highlights Tension, compression and in-plane shear properties of flax/epoxy and glass/epoxy. Mechanical properties of flax and glass composites have the same scattering level. Interfacial debonding between fibre cell walls is observed. Damage of flax/epoxy has been assessed by the crack density development.
Abstract Experimental investigations were conducted on flax and E-glass fibres reinforced epoxy matrix composites subjected to quasi-static loadings. Flax/epoxy samples having [0]12, [90]12, [0/90]3S and [±45]3S stacking sequences, with a fibre volume fraction of 43% have been tested under tension, compression and in-plane shear loadings. Overall, the compression strength of glass/epoxy was 76% greater than for the flax/epoxy composite. The damage evolution of flax/epoxy of [0/90]3S and [±45]3S samples has been evaluated in terms of transverse crack densities with respect to the load increment. The crack density exhibited a classical “S” shaped pattern for [0/90]3S and linearly for [±45]3S specimens versus the applied load. The final crack densities were respectively of 32/cm and 25/cm for the [0/90]3S and [±45]3S samples.
Quasi-static behaviour and damage assessment of flax/epoxy composites
Highlights Tension, compression and in-plane shear properties of flax/epoxy and glass/epoxy. Mechanical properties of flax and glass composites have the same scattering level. Interfacial debonding between fibre cell walls is observed. Damage of flax/epoxy has been assessed by the crack density development.
Abstract Experimental investigations were conducted on flax and E-glass fibres reinforced epoxy matrix composites subjected to quasi-static loadings. Flax/epoxy samples having [0]12, [90]12, [0/90]3S and [±45]3S stacking sequences, with a fibre volume fraction of 43% have been tested under tension, compression and in-plane shear loadings. Overall, the compression strength of glass/epoxy was 76% greater than for the flax/epoxy composite. The damage evolution of flax/epoxy of [0/90]3S and [±45]3S samples has been evaluated in terms of transverse crack densities with respect to the load increment. The crack density exhibited a classical “S” shaped pattern for [0/90]3S and linearly for [±45]3S specimens versus the applied load. The final crack densities were respectively of 32/cm and 25/cm for the [0/90]3S and [±45]3S samples.
Quasi-static behaviour and damage assessment of flax/epoxy composites
Liang, Shaoxiong (author) / Gning, Papa-Birame (author) / Guillaumat, Laurent (author)
2014-11-27
10 pages
Article (Journal)
Electronic Resource
English
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