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Impact response of thick composite plates under uniaxial tensile preloading

Article dans une revue avec comité de lecture
Author
GUILLAUD, Nicolas
FROUSTEY, Catherine
ccVIOT, Philippe
ccDAU, Frédéric

URI
http://hdl.handle.net/10985/10158
DOI
10.1016/j.compstruct.2014.11.021
Date
2014
Journal
Composite Structures

Abstract

This work focuses on the impact response of composite plates 5 mm thick subjected to uniaxial tension preload. Laminated carbon/epoxy with quasi-isotropic stacking sequence ([0/45/90/-45]2)S samples were used. Doehlert-type design of experiments was proposed to investigate the influence of both preload and impact energy on impact composite responses. Deformation, varying from 300 to 3000 micro-strain, was imposed thanks to a preload device designed for this purpose. Impacts were generated using a home made drop tower. Imposed impact energy was varying from 30 to 214 J. Post-impact damage was characterized by both non-destructive (ultrasound) and destructive (deply) techniques. Influence of the preloading on delamination areas (total and projected) was quantified and found sensitive to the preloading.

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