Simulation of Guided Wave Inspection Based on the Reciprocity Principle and the Semi‐Analytical Finite Element Method

A model is developed to simulate guided waves (GW) inspections. It is derived from the reciprocity principle and predicts the signal received by a transducer after radiation of GWs by an emitter and their scattering by a defect. The modal solution in a guide of arbitrary section is obtained using the Semi‐Analytical Finite Element method (SAFE). Radiation by a transducer mounted on the section and scattering by a normal crack are computed by post‐processing SAFE results.