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

The Acoustical Society of Korea (한국음향학회)
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Design and Acoustic Properties of Acoustic Device with Metal-Piezoceramic Circular Plate

금속-압전세라믹스로 구성된 음향소자의 설계 및 음향특성

  • Go Young-Jun (Department of Sensor and System Engineering, Yeungnam University) ;
  • Lee Sang-Wook (School of Electrical & Electronic Eng., Yeungnam University) ;
  • Nam Hyo-Duk (School of Electrical & Electronic Eng., Yeungnam University) ;
  • Chang Ho-Gyeong (Department of Electrophysics, Kyungsan University)
  • 고영준 (영남대학교 센서 및 시스템공학과) ;
  • 이상욱 (영남대학교 전기전자공학부) ;
  • 남효덕 (영남대학교 전기전자공학부) ;
  • 장호경 (경산대학교 전자물리학과)
  • Published : 2000.07.07
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Abstract

In this study, the acoustic transducer of a thin circular disc-type with PZT/Metal was designed. The dielectric and piezoelectric properties of $0.5wt\%$ $MnO_2$ and NiO doped 0.1Pb($Mg_{1/3}$$Nb_{2/3}$)$O_3$-$0.45PbTiO_3$-$0.45PbZrO_3$ ceramics were investigated aiming at acoustic transducer applications. The vibration characteristics for the laminated circular plate was analyzed for the various thickness and diameter of the piezoceramic layer and metal layer. The acoustic characteristics which is radiated from the acoustic transducer within the finite space was simulated using the finite element method. It has been observed that the characteristics of the sound pressure ard impedance response calculated for the various models of the size and geometry of acoustic transducer.

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