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Journal articles
An investigation of the damage mechanisms and fatigue life diagrams of flax fiber-reinforced polymer laminates
Abstract : In this paper we investigated the fatigue damage of a unidirectional flax-reinforced epoxy composite using infrared (IR) thermography. Two configurations of flax/epoxy composites layup were studied namely, [0]16 unidirectional ply orientation and [\textpm45]16. The high cycle fatigue strength was determined using a thermographic criterion developed in a previous study. The fatigue limit obtained by the thermographic criterion was confirmed by the results obtained through conventional experimental methods (i.e., Stress level versus Number of cycles to failure). Furthermore, a model for predicting the fatigue life using the IR thermography was evaluated. The model was found to have a good predictive value for the fatigue life. In order to investigate the mechanism of damage initiation in flax/epoxy composites and the damage evolution, during each fatigue test we monitored the crack propagation for a stress level and at different damage stages, a direct correlation between the percentage of cracks and the mean strain was observed.
https://hal-univ-tlse3.archives-ouvertes.fr/hal-01952558
Contributor : Pierre Naegelen <>
Submitted on : Wednesday, December 12, 2018 - 11:44:48 AM
Last modification on : Wednesday, June 24, 2020 - 4:18:55 PM
Contributor : Pierre Naegelen <>
Submitted on : Wednesday, December 12, 2018 - 11:44:48 AM
Last modification on : Wednesday, June 24, 2020 - 4:18:55 PM