Modeling of the Ultrasonic Propagation into Carbon-Fiber-Reinforced Epoxy Composites, Using a Ray Theory Based Homogenization Method

摘要

This paper describes a study dedicated to the modeling of the ultrasonic propagation in parts made of carbon-fiber-reinforced epoxy composites (CFRP), which is of great interest for the aircraft industry. In a previous article, we proposed to evaluate the field radiated into such components by means of a homogenization method coupled to the pencil model implemented in CIVA software. This homogenization is based on the follow-up of the energy ray paths inside each ply of a pattern, and leads to effective stiffness constants through the building of a slowness surface. An improvement is proposed here which allows to take into account the inner refraction energy losses.