2011:33 Mathematical modelling of ultrasonic testing of components with defects close to a non-planar surface

The report describes work that has been performed in order to model ultrasonic testing of components that contain a defect close to a non-planar surface. The studies have been performed in both 2D and 3D, and in 2D in both the anti-plane (SH) and the in-plane (P-SV).

The results show that the presence of a non-planar back wall can reduce the detectability of defects close to the surface.

The results show that the corrugated interface can have important, and in some cases, major effects on the signal response. The results depend crucially on the parameters chosen for the corrugation also the material properties can affect the results.