Proceedings of the Acoustical Society of Korea Conference (한국음향학회:학술대회논문집)

The Acoustical Society of Korea (한국음향학회)
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Design of a FFR-typed High Power Deep-water Sonar Transducer using a Coupled FE-BEM

결합형 유한요소-경계요소 기법에 의한 FFR 형태의 고출력 심해저용 쏘나 변환기 설계

  • Jarng Soon Suck (Dept. of Electrical Control & Instrumentation, Chosun University) ;
  • Lee Je Hyeong (Dept. of Electrical Control & Instrumentation, Chosun University) ;
  • Ahn Heung Gu (Dept. of Electrical Control & Instrumentation, Chosun University) ;
  • Choi Heun Ho (Dept. of Electrical Control & Instrumentation, Chosun University)
  • 장순석 (조선대학교 공과대학 전기) ;
  • 이제형 (조선대학교 공과대학 전기) ;
  • 안흥구 (조선대학교 공과대학 전기) ;
  • 최현호 (조선대학교 공과대학 전기)
  • Published : 1999.07.01
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Abstract

A high power deep-water sonar transducer of FFR (Free Flooded Ring) type has been designed using a coupled FE-BEM. The present sonar transducer is composed of rectangular piezoelectric ceramics and pie-shaped steels (or the advantage of simple fabrication. The dynamics of the sonar transducer is modelled in three dimensions and is analyzed with external electrical excitation conditions. Different results are available such as steady-state frequency response for TX and RX displacement modes, directivity patterns, back-scattering patterns, bandwidths, transmitting voltage responses and receiving sensitivity responses. The TV response shows a very high acoustic pressure of 150 dB/lV (ref $1{\mu}Pa$ at 1m) at 1900 Hz. This ultra high power response of the sonar transducer indicates a new possibility of the sonar transducer development.

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