Cure multiphysic couplings effects on the dynamic behaviour of a thick epoxy (original) (raw)

2013

Abstract

High performance epoxies are more and more used for structural applications, namely for naval and offshore structures as well as for aeronautical and aerospace structures. It is well known today that internal residual stresses are developed during the curing of thermosetting materials. However, several defects like cracks and bubbles inside of the matte r might arise, especially with increasing thickness. These defects may provoke serious damages within the concerned structure in service, especially unde r dynamic solicitations. In order to offer a better quality control, pulsed lasers have recently been used in non destructive inspection and characterization of composites [[1]]. This work focuses on internal gradients of properties generat ed during the curing and their consequences on the dynamical behavior of the epoxy matrix LY 556 . To do this, couplings induced by the curing between the chemistry, the thermal and the mechanics of the matrix in progress are presented and are ta...

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