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Effects of the shock duration on the response of CFRP composite laminates

Article dans une revue avec comité de lecture
Author
GAY, Elise
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
BERTHE, Laurent
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
BOUSTIE, Michel
ARRIGONI, Michel
55607 Laboratoire brestois de mécanique et des systèmes [LBMS]
BUZAUD, Eric
197470 GRAMAT [DAM/GRAMAT]

URI
http://hdl.handle.net/10985/9083
DOI
10.1088/0022-3727/47/45/455303
Date
2014
Journal
Journal of Physics D: Applied Physics

Abstract

Shock loads induce a local tensile stress within a sample. The location and amplitude of this high strain rate stress can be monitored respectively by the duration and intensity of the shock. The process is applied to carbon fibre reinforced polymer (CFRP) composites, involved in aeronautic or defense industry. This paper describes the response of CFRP laminates of different thicknesses to a shock load normal to the fibres direction. The effects of the shock duration on the wave propagation are key issues of this work. Experiments have been performed on high power laser facilities and on a high power pulsed generator to get a wide range of pulse duration from fs to µs. Numerical simulation provides a comprehensive approach of the wave propagation and tensile stress generation within these complex materials. The main result concerns the relation between the load duration, the tensile stress and the induced delamination within 1, 4 and 8 ply composite laminates

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