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http://dx.doi.org/10.5050/KSNVN.2008.18.4.424

Development of Underwater Wide-band Acoustic Transducer Using the 1-3 Piezoelectric Composite  

Lee, Kyung-Woo (경원훼라이트공업㈜ 부설연구소)
So, Hyoung-Jong (경원훼라이트공업㈜)
Lim, Sil-Mook (한국산업기술대학교 신소재공학과)
Kim, Won-Ho (국방과학연구소 6기술본부)
Kim, Dae-Yun (국방과학연구소 6기술본부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.18, no.4, 2008 , pp. 424-431 More about this Journal
Abstract
Recently, it is required that acoustic transducers for underwater detection and communication sensor have wide bandwidth and low operating frequency. In this research, the new acoustic transducer is proposed. This transducer is tonpilz type, and made of 1-3 piezoelectric composites as a driving parts. The developed transducer is evaluated the TVR(transmission voltage response) and RVS(receiving voltage sensitivity) characteristics around $4{\sim}14\;kHz$ frequency range and is compared to conventional tonpilz transducer made of solid piezoelectric ceramics as a driving parts. The resonance frequency of the developed transducer is decreased by 30% and the -3 dB bandwidth is increased by 90%, compared to conventional transducer with same dimensions. The value of TVR is decreased by 9 dB and The value of RVS is the same at resonance frequency.
Keywords
Wide-band Acoustic Transducer; 1-3 Piezoelectric Composite; Low Frequency; Tonpilz Transducer;
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