A multifrequency composite ultrasonic transducer system

Bui, Tuan, Chan, Helen L.W.,Unsworth, Joe

Chicago, IL（1988）

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摘要

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

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关键词

composite materials,piezoelectric transducers,ultrasonic transducers,2 MHz,5 MHz,multifrequency composite ultrasonic transducer,piezoelectric ceramic,polymer matrix,resonance frequencies,

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