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An experimental analysis of fracture Mechanisms of short glass fibre reinforced polyamide 6,6 (SGFR-PA66)

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2009
auteur(s) Mouhmid Bouchaib; Imad Abdellatif; Benseddiq Noureddine; Lecompte D.
journal (abréviation) Composites Science and Technology (Compos Sci Tech)
volume (numéro) 69 (15-16)
  
pages 2521 – 2526
résumé In the present work, toughness of unfilled polyamide 6,6 (PA66) and short glass fibre reinforced polyamide 6,6 (SGFR-PA66) was investigated. Digital image correlation (DIC) was used with a single camera for in-plane displacement field measurement and then strain computation. The results allowed to extract the resistance curve for the PA66 and critical stress intensity factors, KIc, for the SGFR-PA66 with three glass fibre contents (15, 30 and 50% (wt)) and under room temperature (20°C). The tests were carried out on Single Edge Notched Tension (SENT) specimens. The DIC technique allowed to precise the spatial distribution of the local strains in a defined region including the crack tip at different steps of the loading. Scanning electron microscopy observations illustrated different damage mechanisms occurring in the studied composites: matrix crack, fibre-matrix interface failure and fibres pull out.
mots clés Glass fibre reinforced composites; Toughness; Digital Image Correlation
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