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Effect of fibre content on the mechanical properties of hemp fibre woven fabrics/polypropylene composite laminates

Abstract : Nowadays natural fibre composites have gained great significance as reinforcements in polymer matrix composites. Composite material based on a polymer matrix reinforced with natural fibres is extensively used in industry due to their biodegradability, recyclability, low density and high specific properties. A study has been carried out here to investigate the fibre volume fraction effect of hemp fibre woven fabrics/PolyPropylene (PP) composite laminates on the tensile properties and impact hammer impact test. Initially, composite sheets were fabricated by the thermal-compression process with desired number of fabric layers to obtain composite laminates with different fibre volume fraction. Uniaxial, shear and biaxial tensile tests were performed and mechanical properties were calculated. Impact hammer test was also carried out to estimate the frequency and damping parameters of stratified composite plates. Scanning Electron Microscope (SEM) analysis was performed to observe the matrix and fibre constituent defects. Hemp fabrics/PP composite laminates exhibits viscoelastic behaviour and as the fibre volume fraction increases, the viscoelastic behaviour decreases to elastic behaviour. Due to this, the tensile strength increases as the fibre content increases. On the other hand, the natural frequency increases and damping ratio decrease as the fibre volume fraction increases.
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https://hal-utt.archives-ouvertes.fr/hal-03576703
Contributor : Guillaume Montay Connect in order to contact the contributor
Submitted on : Wednesday, February 16, 2022 - 11:19:02 AM
Last modification on : Tuesday, September 13, 2022 - 3:50:44 PM

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Sheedev Antony, Abel Cherouat, Guillaume Montay. Effect of fibre content on the mechanical properties of hemp fibre woven fabrics/polypropylene composite laminates. Polymers and Polymer Composites, SAGE, 2021, 29 (9_suppl), pp.S790-S802. ⟨10.1177/09673911211023942⟩. ⟨hal-03576703⟩

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