Simulation of the Ultrasonic Inspection of Composite Materials

摘要

In the present paper, ultrasonic testing of composite materials for aeronauticalrnapplications with intra-laminar cracks is investigated experimentally and byrnnumerical simulations. For this purpose, different specimens were used. An idealrnspecimen without any crack and two specimens with cracks synthetically generated.rnThe experimental measurements were done with normal piezoelectric longitudinalrnand surface wave ultrasonic transducers in Pulse Echo and Trough Transmissionrnconfiguration. For better interpretation of the received signals, wavernpropagation in the cross section of the rail was modelled numerically using a FEMrncode which was adapted to the special testing situation. The simulations are inrngood agreement with the experimental results for all specimens dealt with.rnThis activity is a part of our contribution at BRITE EURAM "INDUCINDUCE - AdvancedrnIntegrated NDT Concepts for Unified Life-Cicle".