Abstract:This paper follows a strictly theoretical one presented in the previous CFA [I]. We had shown the advantage of using nonuniformly excited transducers in wideband pulse-echo method for nondestructive tetsing. We can now produce the source (and sensitivity) profile we want by a masking method not detaiIed herein. We limit the study to planar disc transducers. The transient field radiated by a planar transducer vibrating with a conventional uniform profile is often described as a superposition of a plane wave and… Show more
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