Journal: Volume 21, No. 1, 2016
Pages: 78 – 88
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Development of monomorfic converters using spatial and angular interaction of electric field vector and polarization vector

Yuliia Bondarenko, Constantine Bazilo, Vasyl Zaika

Abstract

The article is devoted to further improvement of monomorphic piezoelectric transducers with the aim of increasing sound pressure level. The vector of force, acting on piezoelectric element, is traditionally parallel to polarization vector. To obtain sensors with the desired characteristics in the design of piezoelectric transducers it is proposed to connect monomorphic piezoelectric elements so that electric field vector would made an angle with polarization vector. The magnitude of the angle between electric field vector and polarization vector for providing maximum level of sound pressure is determined by the calculation. Connection circuits and the mode of flexural vibrations excitation in disk monomorphic piezoelements, which allowed to increase sound pressure level by 20-25 dB, are described. The dependence of sound pressure on the circuit connections to the generator is determined. It is established and experimentally confirmed that sound pressure level will be higher when connecting the generator to a disk electrode, than when connecting it to a ring electrode. It is shown that the use of additional inductance in the circuit can further increase sound pressure level

Keywords

monomorphic converter, spatial and angular interaction, electric field vector, polarization vector, sound pressure level

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Suggested citation

Bondarenko, Yu., Bazilo, C., & Zaika, V. (2016). Development of monomorfic converters using spatial and angular interaction of electric field vector and polarization vector. Bulletin of Cherkasy State Technological University, 21(1), 78-88.