Theoretical analysis is performed for the sound radiation of a cylindrical power transformer composed of piezoelectric transducers with radial polarization. The transformer is driven in thickness-stretch mode, and an exact solution is obtained for the sound pressure and sound power level in the surrounding fluid. Representative examples are used to illustrate the sound field induced by the operation of the transformer. Numerical results indicate that the electrical impedance and the thickness ratio of actuator/sensor to metal core have considerable effects on sound radiation of the cylindrical power transformer.
Acoustic Radiation of a Cylindrical Piezoelectric Power Transformer
Manuscript received January 9, 2013; final manuscript received February 22, 2013; accepted manuscript posted March 7, 2013; published online August 21, 2013. Editor: Yonggang Huang.
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Zhang, H., Ye, G., and Zhang, Z. (August 21, 2013). "Acoustic Radiation of a Cylindrical Piezoelectric Power Transformer." ASME. J. Appl. Mech. November 2013; 80(6): 061019. https://doi.org/10.1115/1.4023979
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