Resonance Acoustic Spectroscopy

Veksler, N. D.

doi:10.1007/978-3-642-84795-0

Cited by 80 publications

(52 citation statements)

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“…3(a)) are related to the peaks observed (arrows) on Fig. 3(b) [2,3,25]. These peaks are due to the resonances of modes n, they are connected with the propagation of circumferential waves [3,13,27].…”

Section: Backscattered Acoustic Signal From a Tubementioning

confidence: 79%

“…[2,3,25] It is possible to obtain the resonance spectrum using another method developed in first time in experiment and applied to theoretical results: a new Fourier transform is applied to the impulse time signal in which the specular echo (reflected echo) is suppressed and replaced by zeroes, this technique supresses the real background and the obtained spectrum is the backscattered resonance spectrum presented on Fig. 3(b) [26].…”

Section: Backscattered Acoustic Signal From a Tubementioning

confidence: 99%

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A Neuro-fuzzy Computing Technique for Modeling the Acoustic Form Function of Immersed Tubes

Nahraoui¹,

Aassif²,

Elhanaoui³

et al. 2013

IJCA

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An Adaptative Neuro-Fuzzy Inference System (ANFIS) is developed to predict the acoustic form function (FF) for an infinite length cylindrical shell excited perpendicularly to its axis. The Wigner-Ville distribution (WVD) is used like a comparison tool between the calculated FF by the analytical method and that predicted by the neuro-fuzzy technique for a copper tube. During the application of this technique, several configurations are evaluated for various radius ratio b/a (a: outer radius, b: inner radius of tube). This neuro-fuzzy technique is able to predict the FF with a mean relative error (MRE) about 1.7%.

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Section: Backscattered Acoustic Signal From a Tubementioning

confidence: 79%

Section: Backscattered Acoustic Signal From a Tubementioning

confidence: 99%

A Neuro-fuzzy Computing Technique for Modeling the Acoustic Form Function of Immersed Tubes

Nahraoui¹,

Aassif²,

Elhanaoui³

et al. 2013

IJCA

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show abstract

“…Another feature characterizing the sound scattering is the large quality of sharp peaks and dips aroused by the contribution of vibrations of the shell with a viscous liquid filler to the eigen frequencies. Thus, the figure shows the effects of the resonance acoustic scattering (Gaunaurd, Werby, 1990;Veksler, 1993;Kaplunov et al, 1994Kaplunov et al, , 1998Belov et al, 1999). Fig.…”

Section: Numerical Calculations and Analysis Of Resultsmentioning

confidence: 99%

“…(16) and (17) for the inner fluid viscous cylinder (34) where Φ m and Ψ m are the unknown quantities.…”

Section: The Methods Of Solution Of the Problemmentioning

confidence: 99%

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Analysis of Spectral Characteristics of Sound Waves Scattered from a Cracked Cylindrical Elastic Shell Filled with a Viscous Fluid

Piddubniak¹,

Piddubniak²

2013

Archives of Acoustics

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The scattering of plane steady-state sound waves from a viscous fluid-filled thin cylindrical shell weakened by a long linear slit and submerged in an ideal fluid is studied. For the description of vibrations of elastic objects the Kirchhoff-Love shell-theory approximation is used. An exact solution of this problem is obtained in the form of series with cylindrical harmonics. The numerical analysis is carried out for a steel shell filled with oil and immersed in seawater. The modules and phases of the scattering amplitudes versus the dimensionless wavenumber of the incident sound wave as well as directivity patterns of the scattered field are investigated taking into consideration the orientation of the slit on the elastic shell surface. The plots obtained show a considerable influence of the slit and viscous fluid filler on the diffraction process.

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Algebraic Aspects of Multiple Scattering by Two Parallel Cylinders: Classification and Physical Interpretation of Scattering Resonances

Décanini

Folacci

Gabrielli

et al. 1999

Journal of Sound and Vibration

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Resonance Acoustic Spectroscopy

Cited by 80 publications

References 0 publications

A Neuro-fuzzy Computing Technique for Modeling the Acoustic Form Function of Immersed Tubes

A Neuro-fuzzy Computing Technique for Modeling the Acoustic Form Function of Immersed Tubes

Analysis of Spectral Characteristics of Sound Waves Scattered from a Cracked Cylindrical Elastic Shell Filled with a Viscous Fluid

Algebraic Aspects of Multiple Scattering by Two Parallel Cylinders: Classification and Physical Interpretation of Scattering Resonances

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