Current Applied Physics

Korean Physical Society (한국물리학회)
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Insertion loss of sound waves through composite acoustic window materials

Lee, Ji-Hye;Kim, Byoung-Nam;Shin, Ku-Kyun;Yoon, Suk-Wang

  • Published : 20100000
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Abstract

This study evaluated the insertion loss of sound waves through composite acoustic window materials for sonar dome applications, and examined the influence of dome shape on the sonar performance. The insertion loss of sound waves through acoustic window materials was experimentally measured as a function of frequency at normal incidence. The insertion loss was also theoretically estimated with threeand four-medium layer models. The theoretical estimation of insertion loss showed good agreement with the experimental measurements. The insertion loss was also measured as a function of angle of incidence. The characteristics of longitudinal and converted shear waves were observed at various angles of incidence. This study will be useful to select acoustic window materials with the appropriate acoustic characteristics for practical sonar dome applications.

Keywords

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