Comparative analysis of different methods of acoustic beam angle measurement and calculation of directivity patterns for angle piezoelectric transducers

Abstract

Results of applying the electromagnetic-acoustic multiple-shadow method to testing smalldiameter cylindrical objects with Rayleigh waves are presented. The possibility for using the spectral and probabilistic-statistical approaches to processing detected signals is demonstrated. The capabilities of the method are evaluated when revealing surface flaws of different types, orientations, and dimensions in various objects.