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Research Article

Comparative analysis of the acoustic characteristics of different types of cymbal transducers

심벌 트랜스듀서의 종류별 음향 특성 비교 분석

Youji Choi1
,
Hayeong Shim1
,
Yongrae Roh1∗
최 유지1
,
심 하영1
,
노 용래1∗
1경북대학교 기계공학부
∗Corresponding Author
31 May 2019. pp. 256-265
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Abstract

Several types of cymbal transducers used for underwater detection have been studied. Representative types are Moonie, convex cymbal, and concave cymbal transducers. In this study, we analyzed the characteristics of these three types of transducers for underwater broadband projectors and compared them together. First, the influence of structural variables on the acoustic characteristics of the transducers was analyzed. Based on this, we derived the structure of each transducer type to have a specific center frequency and the maximum bandwidth. As a result of comparing the performance of the optimized transducers, the convex cymbal transducer turned out to be best in terms of both broad bandwidth and high power.

Keywords
Moonie transducer
Convex cymbal transducer
Concave cymbal transducer
Finite element analysis

수중 탐지용으로 사용되는 심벌 트랜스듀서에는 여러 가지 종류가 연구되어져 왔는데, 대표적인 종류로 Moonie 트랜스듀서, 컨벡스 심벌 트랜스듀서, 그리고 컨케이브 심벌 트랜스듀서 등이 있다. 본 연구에서는 수중 광대역 프로젝터용으로 이들 세 종류의 트랜스듀서의 특성을 분석하고 비교하였다. 트랜스듀서의 구조 변수들이 각 트랜스듀서의 음향 특성에 미치는 영향을 분석하고 이를 바탕으로 각 트랜스듀서 종류가 특정 중심주파수를 가지면서 대역폭이 최대가 되는 구조를 도출하였다. 최적화된 구조를 가지는 트랜스듀서들의 성능을 비교한 결과, 컨벡스 심벌 트랜스듀서가 광대역과 고출력, 두 측면에서 모두 가장 우수하다는 것을 확인하였다.

키워드
Moonie 트랜스듀서
컨벡스 심벌 트랜스듀서
컨케이브 심벌 트랜스듀서
유한요소해석
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Information
  • Publisher :The Acoustical Society of Korea
  • Publisher(Ko) :한국음향학회
  • Journal Title :The Journal of the Acoustical Society of Korea
  • Journal Title(Ko) :한국음향학회지
  • Volume : 38
  • No :3
  • Pages :256-265
  • Received Date : 2018-11-21
  • Accepted Date : 2019-05-20
  • DOI :https://doi.org/10.7776/ASK.2019.38.3.256
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