Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Damage mechanisms characterization of flax fibers–reinforced composites with interleaved natural viscoelastic layer using acoustic emission analysis

Abstract : In this paper, the static and fatigue behavior of flax fiber-reinforced composites with and without an interleaved natural viscoelastic layer are investigated. Viscoelastic composite plates consist of a soft natural viscoelastic layer which is confined between two identical flax fiber reinforced composites. Different stacking sequences of specimens are tested with uniaxial tensile loading until failure. The mechanical behavior and the acoustic activity of damage sources in various configurations with and without a viscoelastic layer are compared. The analysis of acoustic emission signals and the macroscopic and microscopic observations led to the identification of the main acoustic signatures of different damage modes dominant in each type of composites (with and without a viscoelastic layer). These results allow better identification of the influence of the impact of a viscoelastic layer on the mechanical behavior of different composites. In addition, static and fatigue flexural behavior of unidirectional composites with and without viscoelastic layer are characterized in 3-point bending tests. The effects of viscoelastic layer on the stiffness, hysteresis loops, and loss factor are studied for various numbers of cycles during cyclic fatigue.
Type de document :
Article dans une revue
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-02954704
Contributeur : Abderrahim El Mahi <>
Soumis le : jeudi 1 octobre 2020 - 11:43:51
Dernière modification le : lundi 8 février 2021 - 16:15:55

Identifiants

Collections

Citation

Abderrahim El Mahi, Hajer Daoud, Jean-Luc Rebiere, Isabelle Gimenez, Mohamed Taktak, et al.. Damage mechanisms characterization of flax fibers–reinforced composites with interleaved natural viscoelastic layer using acoustic emission analysis. Journal of Composite Materials, SAGE Publications, 2019, 53 (18), pp.2623-2637. ⟨10.1177/0021998319836236⟩. ⟨hal-02954704⟩

Partager

Métriques

Consultations de la notice

39