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Study of translaminar fracture toughness of unidirectional flax/epoxy composite

Saadati, Yousef and Lebrun, Gilbert and Bouvet, Christophe and Chatelain, Jean-François and Beauchamp, Yves Study of translaminar fracture toughness of unidirectional flax/epoxy composite. (2020) Composites Part C: Open access, 1. ISSN 2666-6820

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Official URL: https://doi.org/10.1016/j.jcomc.2020.100008

Abstract

Ever growing applications of flax fiber-reinforced composites (FFRCs) and their suitability for structural uses involve implementing the design and failure criteria for these composites. Translaminar fracture is one of the primary failure modes of unidirectional (UD) fiber-reinforced composites, and measuring it is essential for design purposes and in many material failure studies. However, the translaminar fracture parameters have not been evaluated for UD-FFRCs; thus, there is no data available in the literature. Moreover, conventional test methods for this failure mode are complex, and there is no standard method for measuring this value in compression. In this study, the translaminar fracture behavior of a UD flax/epoxy composite has been examined, and its fracture toughness in tension and compression in the fiber direction are determined following existing standard meth- ods as well as using a methodology developed using infrared thermography. Compact tension specimens were adapted and used for this purpose. A fractographic study is conducted to examine the fracture surfaces and better understand the failure mechanisms. For tensile tests, the results of infrared thermography are in good agreement with those of ASTM E1922 and lie in the range of values obtained for similar composites in the literature.

Item Type:Article
HAL Id:hal-02953322
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Ecole nationale supérieure des Mines d'Albi-Carmaux - IMT Mines Albi (FRANCE)
Other partners > Ecole de Technologie Supérieure - ETS (CANADA)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université du Québec à Trois-Rivières - UQTR (CANADA)
Other partners > Université McGill (CANADA)
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Deposited On:30 Sep 2020 07:33

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