Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on the Acoustic Performance Design Technique of Underwater Acoustic Material

수중 음향재료의 음향성능 설계기법 연구

  • Received : 2013.09.03
  • Accepted : 2013.10.14
  • Published : 2013.10.20
Download PDF
⟨ Previous Next ⟩

Abstract

The requirement of acoustic performance about underwater acoustic material which is used in underwater environment more increases. Underwater acoustic material was made by viscoelastic material such as a rubber and a polyurethane etc. In order to increase an acoustic performance, several kinds of inclusions were added to viscoelastic material. In this paper, acoustic modelling and analysis techniques were introduced and the acoustic characteristics of underwater acoustic material were studied. Echo reduction and transmission loss were calculated with volume fraction of inclusion in the material. Also the characteristic impedance and the input impedance of underwater acoustic material were obtained and effects on the echo reduction and transmission loss of material were discussed.

Keywords

References

  1. Gaunaurd, G. C. and Uberall, H., 1978, Theory of Resonant Scattering from Spherical Cavities in Elastic and Viscoelastic Media, Journal of Acoustical Society of America, Vol. 63, No. 6, pp. 1699-1712. https://doi.org/10.1121/1.381908
  2. Gaunaurd, G. C. and Überall, H., 1982, Resonance Theory of Effective Properties of Perforated Solid, Journal of Acoustical Society of America, Vol. 71, No. 2, pp. 282-295. https://doi.org/10.1121/1.387452
  3. Kerr, F. H., 1992, The Scattering of a Plane Wave by Spherical Elastic Inclusion, International Journal of Engineering Science, Vol. 30, No. 2, pp. 169-186. https://doi.org/10.1016/0020-7225(92)90050-Q
  4. Kerr, F. H., 1992, An Effective Medium Approach to the Study of Plane Wave Propagation in an Elastic Matrix with Spherical Elastic Inclusions, International Journal of Engineering Science, Vol. 30, No. 2, pp. 187-198. https://doi.org/10.1016/0020-7225(92)90051-H
  5. Baird, A. B., Kerr, F. H. and Townend, D. J., 1999, Wave Propagation in a Viscoelastic Medium Containing Fluid-filled Microspheres, Journal of Acoustical Society of America, Vol. 105, No. 3, pp. 1527-1538. https://doi.org/10.1121/1.426692
  6. Skelton, E. A. and James, J. H., 1997, Theoretical Acoustics of Underwater Structures, Imperial College Press.
  7. Meng, T., Wei, L. T. and Hong, X. H., 2010, Noise Reduction Analysis of an Underwater Decoupling Layer, Journal of Vibration and Acoustics, Vol. 132, pp. 061006-1-7. https://doi.org/10.1115/1.4002126
  8. Seo, Y. S., Kang, M. W., Shin, K. K. and Jeon, J. J., 2011, Acoustic Performance Study of FRP Acoustic Window, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 21, No. 10, pp. 890-896. https://doi.org/10.5050/KSNVE.2011.21.10.890
  9. Shin, K. K., Seo, Y. S., Kang, M. W. and Jeon, J. J., 2013, The Influence of Design Factors of Sonar Acoustic Window on Transfer Function of Self Noise due to Turbulent Boundary Layer, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 23, No. 1, pp. 56-64. https://doi.org/10.5050/KSNVE.2013.23.1.056

Cited by

  1. A Study on the Acoustic Baffle to Reduce Ghost Target According to Structure behind Cylindrical Array Sensor vol.25, pp.6, 2015, https://doi.org/10.5050/KSNVE.2015.25.6.440
  2. A Durability Study on the Acoustic Baffle for Underwater Environment vol.26, pp.4, 2016, https://doi.org/10.5050/KSNVE.2016.26.4.449