Modified 1-3 Ceramic/Epoxy Piezocompsite and Cylinder Array Transducer

The modified 1-3 piezocomposites were prepared in order to improve the stability of underwater acoustic transducers. The composite consists of 1-3 ceramic/epoxy composite and ceramic plate with series pattern. It was fabricated by dicing PZT ceramic along mutually perpendicular directions on the flat and then filling epoxy into grooves. In the paper, the cylinder transducer array made of modified 1-3 composite was fabricated. The performance of the transducer was investigated. The resonance frequency is 72 kHz when the diameter of the transducer is 85 mm. The transmitting voltage response reached 139 dB at 72 kHz, the receiving sensitivity was -212 +/- 4 dB in the frequency range of 20 kHz to 60 kHz, the directivity pattern was omnidirectional in horizontal direction and with beam width of 12 degrees in vertical direction.