Development of novel green and biocomposite materials: Tensile and flexural properties and damage analysis using acoustic emission

Bravo, Alencar, Toubal, Lotfi, Koffi, Demagna et Erchiqui, Fouad (2015). Development of novel green and biocomposite materials: Tensile and flexural properties and damage analysis using acoustic emission. Materials & Design , 66 (PA). pp. 16-28. doi:10.1016/j.matdes.2014.10.026 Repéré dans Depositum à https://depositum.uqat.ca/id/eprint/981

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Résumé

A new green composite made of natural polyethylene (NPE) has never been produced using short birch fibers and compared with others biocomposites with matrices of linear low-density polyethylene (LLDPE) and high-density polyethylene (HDPE). Versions with and without a coupling agent (CA) in fiber ratios of 10, 20, 30 and 40 wt% were produced. Tensile and 3-point flexural tests were conducted to measure the mechanical properties of the composites, and acoustic-emission testing was used to measure the evolution ofdamage caused by irreversible changes in the materials in correlation with an analysis of the damage modes. It was concluded that the extent of the damage and the contribution of each damage mode depend on the material, the test performed and, especially the presence of a CA. The results prove that the choice of composite for a particular application must be a judicious one and should consider not only the mechanical properties but also the damage processes of the composite, which may be crucial for longterm applications.

Type de document:	Article
Informations complémentaires:	Licence d'utilisation : CC-BY-NC-ND 4.0
Mots-clés libres:	Biocomposite materials; Tensile and flexural properties; Damage analysis; Acoustic emission testing; High density polyethylenes; Linear low density polyethylenes
Divisions:	Génie
Date de dépôt:	29 mars 2020 18:10
Dernière modification:	29 mars 2020 18:10
URI:	https://depositum.uqat.ca/id/eprint/981

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