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Impact behaviour of flax/epoxy composite plates

Article dans une revue avec comité de lecture
Author
LIANG, Shaoxiong
GNING, Papa-Birame
128669 Département de Recherche en Ingéniérie des Véhicules pour l'Environnement [DRIVE]
ccGUILLAUMAT, Laurent
206863 Laboratoire des Arts et Métiers ParisTech d'Angers - Procédés Matériaux Durabilité [LAMPA - PMD]

URI
http://hdl.handle.net/10985/9935
DOI
10.1016/j.ijimpeng.2015.01.006
Date
2015
Journal
International Journal of Impact Engineering

Abstract

This paper presents an experimental investigation of the impact behaviour of flax/epoxy composite plates submitted to low-velocity transverse impact. Low energy drop-weight impact tests have been performed on two types of quasi-isotropic flax/epoxy composites, rectangularly shaped with edges lengths of 142 mm × 94 mm and 2.85 mm thick. Residual properties have been assessed by compression after impact tests. A detailed description of damage development, especially the increase of the rear face crack with respect to the impact energy is given by the microscopic observation. The influence of impact damage on the residual strength is described. A loss of 15%–30% in compression resistance was noticed for specimens impacted by 10 J. Dynamic effects appeared negligible and a good concordance was found between quasi-static three points bending and low energy impact loadings.

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