Journal
INTERNATIONAL JOURNAL OF FATIGUE
Volume 63, Issue -, Pages 36-45Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2014.01.003
Keywords
Flax fibres; Polymer-matrix composites (PMCs); Fatigue; Damage mechanics
Funding
- Faber fund from the Bourgogne Region, France
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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. (C) 2014 Elsevier Ltd. All rights reserved.
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