Acoustical Physics

, Volume 52, Issue 6, pp 638–647

Impedance theory of sound absorption: The best absorber and the black body

  • Yu. I. Bobrovnitskiĭ
Article

DOI: 10.1134/S1063771006060030

Cite this article as:
Bobrovnitskiĭ, Y.I. Acoust. Phys. (2006) 52: 638. doi:10.1134/S1063771006060030

Abstract

The impedance theory of scattering (which was proposed by the author—see Acoust. Phys. 52, No. 5 (2006)) is used as the basis for studying the extremum properties of the absorption and scattering sound powers of arbitrary elastic bodies in an arbitrary acoustic medium. Impedance-type conditions are obtained for the surfaces of a best absorber, a perfect scatterer, and a so-called Macdonald body. The absorbing and scattering properties of these objects are studied in comparison with the Kirchhoff black body. Illustrative examples are presented.

PACS numbers

43.30.Ky 43.55.Ev 43.20.Tb 

Copyright information

© Pleiades Publishing, Inc. 2006

Authors and Affiliations

  • Yu. I. Bobrovnitskiĭ
    • 1
  1. 1.Blagonravov Institute of Mechanical EngineeringRussian Academy of SciencesMoscowRussia

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