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This document describes research into optimizing the excitation efficiency of a torsional wave periodic permanent magnet (PPM) electromagnetic acoustic transducer (EMAT) array for pipe inspection. A 3D finite element model of the EMAT array in a steel pipe is developed to study the effects of varying the number of elements in the array. Simulation results for models with different element numbers are compared to determine an optimal number that maximizes the amplitude of the torsional wave signal, represent
- Author
- gorkembayten
- Language
- EN