A Study of the interlaminar fracture toughness of unidirectional flax/epoxy composites

Saadati, Y., Chatelain, J.-F., Lebrun, G., Beauchamp, Y., Bocher, P. et Vanderesse, N. (2020). A Study of the interlaminar fracture toughness of unidirectional flax/epoxy composites. Journal of Composites Science, 4 (2). p. 66. ISSN 2504-477X DOI 10.3390/jcs4020066

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Résumé

Having environmental and economic advantages, flax fibers have been recognized as a potential replacement for glass fibers as reinforcement in epoxy composites for various applications. Its widening applications require employing failure criteria and analysis methods for engineering design, analysis, and optimization of this material. Among different failure modes, delamination is known as one of the earliest ones in laminated composites and needs to be studied in detail. However, the delamination characteristics of unidirectional (UD) flax/epoxy composites in pure Mode I has rarely been addressed, while Mode II and Mixed-mode I/II have never been addressed before. This work studies and evaluates the interlaminar fracture toughness and delamination behavior of UD flax/epoxy composite under Mode I, Mode II, and Mixed-mode I/II loading. The composites were tested following corresponding ASTM standards and fulfilled all the requirements. The interlaminar fracture toughness of the composite were determined and validated based on the specific characteristics of natural fibers. Considering the variation in the composite structure configuration and its effects, the results of interlaminar fracture toughness fit in the range of those reported for similar composites in the literature and provide a basis for the material properties of this composite.

Type de document:	Article
Mots-clés libres:	Flax-epoxy composite Interlaminar fracture energy Fracture toughness Delamination Mode I Mode II and Mixed-mode I–II interlaminar fracture Critical energy release rate
Date de dépôt:	03 mars 2022 13:47
Dernière modification:	03 mars 2022 13:47
Version du document déposé:	Version officielle de l'éditeur
URI:	https://depot-e.uqtr.ca/id/eprint/9991

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