Title :
A multifrequency composite ultrasonic transducer system
Author :
Bui, Tuan ; Chan, Helen L.W. ; Unsworth, Joe
Author_Institution :
Ausonics Pty. Ltd., Lane Cove, NSW, Australia
Abstract :
A multifrequency composite ultrasonic transducer system is described that comprises piezoelectric ceramic rods embedded in a polymer matrix. By selecting the appropriate thickness and width of ceramic rod, the transducer assembly can be made to resonate at a number of frequencies, as predicted by the mode coupling theory. One of the resonance frequencies is determined by the width of the ceramic rod; other resonance frequencies are determined by the width-to-thickness ratio of the ceramic rods. A batch of five 2-MHz and 5-MHz dual-frequency transducers was fabricated. The results correlate well with the theoretical prediction
Keywords :
composite materials; piezoelectric transducers; ultrasonic transducers; 2 MHz; 5 MHz; multifrequency composite ultrasonic transducer; piezoelectric ceramic; polymer matrix; resonance frequencies; Australia; Ceramics; Composite materials; Physics; Piezoelectric transducers; Polymers; Resonance; Resonant frequency; Ultrasonic imaging; Ultrasonic transducers;
Conference_Titel :
Ultrasonics Symposium, 1988. Proceedings., IEEE 1988
Conference_Location :
Chicago, IL
DOI :
10.1109/ULTSYM.1988.49453
