Powered by OpenAIRE graph
Found an issue? Give us feedback
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ The Journal of the A...arrow_drop_down
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
The Journal of the Acoustical Society of America
Article . 1982 . Peer-reviewed
Data sources: Crossref
versions View all 1 versions
addClaim

Creeping waves in acoustic scattering and the ringing of resonances

Authors: G. C. Gaunaurd; H. Überall;

Creeping waves in acoustic scattering and the ringing of resonances

Abstract

The ringing of resonances in acoustic scattering was experimentally observed by Faran in selected cases. In our resonance scattering theory [G. C. Gaunaurd and H. Überall, J. Appl. Phys. 50, 4642 (1979)], this is obtained simply as the Fourier transform of a pole term in the scattering amplitudes, with poles located in the complex-frequency plane corresponding to the eigenfrequencies of the target system, as described in the radar case by the “Singularity Expansion Method” (SEM). These SEM poles are found to occur in distinct “layers,” and each such layer corresponds to the manifestations of a given circumferential wave, as obtained by us previously from a Watson transformation. We show for impenetrable spheres and cylinders that summing the pole terms over a corresponding layer leads to creeping pulses with arrival times governed by the group velocity, including multiple circumnavigations which constitute the ringing. Phase and group velocity dispersion curves are obtained directly from the SEM poles. [H. Überall is also at Catholic University, Washington, DC, supported by the Office of Naval Research.]

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    0
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
Powered by OpenAIRE graph
Found an issue? Give us feedback
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
bronze