Non Direction High-frequency Underwater Transducer

A non direction high-frequency acoustic transducer had been designed and prepared with PZT-5 type piezoelectric ceramic ring. When the piezoelectric ceramic ring vibrates on its thickness mode, the resonant frequency is higher than that of other modes. The affiliations of the resonant frequency and the size of the piezoelectric ceramic ring transducer are obtained by finite element analysis. The resonant frequency of the transducer increases when the thickness of the piezoelectric ceramic ring decreases. The resonant frequency of the transducer increases slowly when the height of the piezoelectric ceramic ring decreases. The inner diameter of piezoelectric ceramic ring has nothing to do with its thickness resonant frequency. The actual sample is produced for verifying the accuracy of the simulation results. The affiliation of the resonant frequency and the size of actual transducer is the same as the simulation results. So we have produced a high-frequency acoustic transducer whose resonant frequency is 290 kHz and the maximum transmit voltage response of the product is 143dB. Compare the products and the traditional cylindrical transducers, the products haven't only a good non direction circle directional, but it also has a high resonant frequency (290 kHz).