Use of acoustic emission to discriminate damage modes in carbon fibre reinforced epoxy laminate during tensile and buckling loading
Résumé
The purpose of this work is to use acoustic emission signal parameters to identify and
characterize the various damage mechanisms in composite and composite-antenna-structures
during tensile and buckling loading. The wave form, FFT diagram, peak power, frequency
centroid, peak frequency, absolute energy, average frequency, duration and amplitude were
used for discriminate the acoustic emission signals, enabling a correlation with the damage
mechanisms modes: fibre breakage, interfacial debonding fibre/matrix, micro and macro
matrix cracking, delamination onset (microdelamination) and propagation of delamination
(macrodelamination). These results open perspectives for real-time damage monitoring in
complex composite material.
Origine : Fichiers produits par l'(les) auteur(s)
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