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Investigation and modeling of the fatigue damage in natural fiber composites

Conférence invitée
Author
BOUGHERARA, Habiba
EL SAWI, Ihab
FAWAZ, Zouheir
ccMERAGHNI, Fodil
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]

URI
http://hdl.handle.net/10985/10049
DOI
10.1002/9781119090427.ch4
Date
2015

Abstract

The main objective of this preliminary investigation is to identify and characterize the damage evolution of angle ply ([±45] 16 ) flax-reinforced epoxy composites using an energy-based damage model combined with Scanning Electron Microscopy (SEM) observations. The damage model’s parameters for the flax-reinforced epoxy composite were determined from quasi-static and fatigue tests. The preliminary results showed that the energy-based damage model is able predict accurately the damage rate in both longitudinal and transverse directions for loads. The mechanism of damage initiation in the flax/epoxy composites and the damage evolution, during each test, were monitored using SEM. A direct correlation between the microstructure of the flax-reinforced epoxy composites and the damage was obtained.

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