METHOD OF SELECTING ULTRASONIC TRANSDUCERS FOR USE IN ULTRASONIC INSPECTION APPARATUS

摘要

A method of selecting the ultrasonic transducers which are used in non destructive ultrasonic inspection apparatus consists of establishing under predetermined conditions the frequency spectra of the transducers under consideration, comparing these spectra with the frequency spectrum of a reference transducer obtained under the same predetermined conditions, and selecting only those transducers of which the frequency spectrum is substantially identical in form to that of the reference transducer.