Elastic wave propagation is widely used for Non-Destructive Testing and Structural Health Monitoring. Simulation techniques allowing for virtual damage detection based on wave propagation are of particular interest. Numerical simulation of ultrasonic wave propagation in structures based on Finite Difference approach is presented. The method is implemented using Graphical Processing Units. The major focus is on temperature influencing wave propagation. This effect is studied using coupled thermo-mechanical analyses. A complete simulation framework, developed for wave propagation and wave interaction with structural damage subjected to inhomogeneous temperature field, is proposed. This framework is illustrated using Lamb wave propagation in metallic plates with cracks. Temperature field originates from thermoelastic and frictional effects in these simulations.
展开▼
