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The study on finite element analyses of ultrasonic transducer is presented by using the finite element software ANSYS. The transducer is treated as 1/18 3-D finite element analysis modeling to study the ultrasonic transducer acoustic performance. The model of ultrasonic transducer is used in modal analysis and harmonic solutions to understand its mechanical behavior and its natural frequency. Modal...
This paper reported modeling and theoretical characterization of circular piezoelectric micromachined ultrasonic transducer (pMUT) for immersion applications. Zinc oxide (ZnO) was employed as piezo active material and nickel aluminum bronze alloy UNS C63000 (CuAl10Ni5Fe4) also known as “sea bronze”, was introduced as electrodes. First, virtual fabrication process was carried out within software environment...
The precise relationship between fundamental and higher order modes of capacitive micro-machined ultrasonic transducers (CMUTs) with rectangular membranes were determined. We investigated the effects of higher order modes on acoustical characteristics of CMUTs with rectangular membranes, especially effects on the transmission gain spectrum, through experiments using fabricated rectangular CMUT cells...
A cylindrical standing wave ultrasonic motor using cantilever and sandwich type transducers was proposed in this paper. There are four pairs of cantilevers outside the cylindrical stator, and four PZT ceramics are set between each pair of cantilevers. The PZT ceramics together with a pair of cantilevers compose a longitudinal transducer. The bending mode of cylindrical stator is excited by the longitudinal...
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