ULTRASONIC TRANSDUCER WITH IMPROVED COMPRESSIVE LOADING

摘要

This invention is an ultrasonic device (10) with increased efficiency as a result of substantially increased pressure uniformity across individual PZTs , and through the PZT stack (12). Specifically, the PZT stack (12) is uniforml y compressed by way of a bolt (16) having a head that has a surface area rough ly equal to the surface area of the individual piezoelectric elements. The bolt (16) is further combined with an aft end bell (14) that has a reduced surfac e contact with the bolt head (22), and a larger surface with the adjacent piezoelectric stack (12).