Effect of geometric dimensions and fibre orientation on 3D moisture diffusion in flax fibre reinforced thermoplastic and thermosetting composites

In this work, we investigate the diffusion behaviour of twill flax fabrics reinforced thermoplastic and thermosetting composites elaborated by the vacuum infusion technique. Water absorption tests were conducted by immersing composite specimens into tap and salt water at room temperature. In particu...

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Veröffentlicht in:Composites. Part A, Applied science and manufacturing Jg. 95; S. 75 - 86
Hauptverfasser: Chilali, Abderrazak, Assarar, Mustapha, Zouari, Wajdi, Kebir, Hocine, Ayad, Rezak
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier Ltd 01.04.2017
Elsevier
Schlagworte:
3D diffusion models
absorption
algorithms
ambient temperature
composite materials
Edge effect
Engineering Sciences
fabrics
Fibre orientation effect
flax
Flax fibre
saline water
thermoplastics
Thickness effect
Water ageing
water uptake
Water ageing
3D diffusion models
Thickness effect
Flax fibre
Fibre orientation effect
Edge effect
ISSN:1359-835X, 1878-5840
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Zusammenfassung:In this work, we investigate the diffusion behaviour of twill flax fabrics reinforced thermoplastic and thermosetting composites elaborated by the vacuum infusion technique. Water absorption tests were conducted by immersing composite specimens into tap and salt water at room temperature. In particular, the effects of aspect ratio, thickness and fibre orientation are considered. The principal three-dimensional (3D) diffusion parameters are identified by 3D Fick’s and Langmuir’s models using an optimization algorithm. It is found that the flax reinforced thermoplastic composite absorbs less water than the flax thermoset composite. In addition, the obtained absorption curves indicate that the equilibrium mass gain linearly increases with fibre orientation, decreases with thickness and strongly related to the diffusion rate. Furthermore, 3D water diffusion kinetics are shown to depend on the samples aspect ratio and governed by a privileged direction.
Bibliographie:ObjectType-Article-1
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content type line 23
ISSN:1359-835X
1878-5840
DOI:10.1016/j.compositesa.2016.12.020