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Multipole reasonances in elastic wave-scattering from cavities and in acoustic wave-scaterring from bubbles and droplets

  • G. Gaunaurd
Classical Scattering Theory
Part of the Lecture Notes in Physics book series (LNP, volume 130)

Abstract

By means of the Resonance Theory of viscoelastic wave-scattering from cavities in solids, we examine several multipole contributions to the sonar cross sections of fluid-filled cavities in solid rubbers. The analysis is done first ignoring, and then accounting for mode-conversion in the solid rubber matrix. The results are analytically particularized to the simpler cases of a) the nth multipole of a gas-bubble in water, b) the nth multipole of a liquid droplet in a gas, c) the zeroth order multipole (i.e., monopole) contribution for a gas-filled cavity in solid rubber. Results for other multipoles are then numerically examined and displayed, up to the quadrupole case. The program we have developed can generate similar results for any higher-order multipole and any combination of substances, in any of the above situations.

Keywords

Liquid Droplet Resonance Theory Solid Rubber Giant Monopole Resonance Monopole Case 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    G. Gaunaurd, H. Uberall: “Theory of resonant scattering from spherical cavities in elastic and viscoelastic media,” J. Acoust. Soc. Amer. 63, 1699–1712 (1978)Google Scholar
  2. [2]
    G. Gaunaurd, H. Uberall: “Numerical evaluation of modal resonances in the echoes of compressional waves scattered from fluid-filled spherical cavities in solids”, J. Applied Phys. 52, in pressGoogle Scholar
  3. [3]
    G. Gaunaurd, K. P. Scharnhorst, H. Überall: “Giant monopole resonances in the scattering of waves from gas-filled spherical cavities and bubbles,” J. Acoust. Soc. Amer. 65, 573–594 (1979)Google Scholar
  4. [4]
    Physics of Sound in the Sea, Pt. IV, ed. by R. Wildt, Summary Technical Report Div. 6, Vol. 8 (AD200624), Chap. 28, Fig. 1 (1946)Google Scholar

Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • G. Gaunaurd
    • 1
  1. 1.Naval Surface Weapons CenterMaryland

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