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Properties evolution of flax/epoxy composites under fatigue loading

Article dans une revue avec comité de lecture
Author
LIANG, Shaoxiong
128669 Département de Recherche en Ingéniérie des Véhicules pour l'Environnement [DRIVE]
GNING, Papa-Birame
128669 Département de Recherche en Ingéniérie des Véhicules pour l'Environnement [DRIVE]
ccGUILLAUMAT, Laurent
206863 Laboratoire des Arts et Métiers ParisTech d'Angers - Procédés Matériaux Durabilité [LAMPA - PMD]

URI
http://hdl.handle.net/10985/8601
DOI
10.1016/j.ijfatigue.2014.01.003
Date
2014
Journal
International Journal of Fatigue

Abstract

The tension–tension fatigue behaviour of flax fibre reinforced epoxy matrix composites have been investigated for specimens having [0]12, [90]12, [0/90]3S and [±45]3S lay-ups. The Probabilized Stress–Number of cycles (P-S–N) curves have been determined for each laminate type. The measured stress and strain data allowed to quantify the evolution of the mechanical properties, i.e. stiffness, damping and permanent strain as a function of imposed cycles. Especially, the stiffening phenomenon of flax reinforcements oriented parallel to the loading direction has been confirmed. However, due to the competition between damage development and the fibre stiffening, the increase in the longitudinal Young’s modulus was noticed on the composites depending on the ratio of fibres parallel to load direction.

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