CFP last date
22 April 2024
Reseach Article

Guided Waves Propagation in Two-layer Tubes: Effects of the Inner Part in Contact with Air in the Cavity

by Abdelkader Elhanaoui, Elhoucein Aassif, Gerard Maze, Dominique Decultot
International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 102 - Number 2
Year of Publication: 2014
Authors: Abdelkader Elhanaoui, Elhoucein Aassif, Gerard Maze, Dominique Decultot
10.5120/17790-8581

Abdelkader Elhanaoui, Elhoucein Aassif, Gerard Maze, Dominique Decultot . Guided Waves Propagation in Two-layer Tubes: Effects of the Inner Part in Contact with Air in the Cavity. International Journal of Computer Applications. 102, 2 ( September 2014), 34-43. DOI=10.5120/17790-8581

@article{ 10.5120/17790-8581,
author = { Abdelkader Elhanaoui, Elhoucein Aassif, Gerard Maze, Dominique Decultot },
title = { Guided Waves Propagation in Two-layer Tubes: Effects of the Inner Part in Contact with Air in the Cavity },
journal = { International Journal of Computer Applications },
issue_date = { September 2014 },
volume = { 102 },
number = { 2 },
month = { September },
year = { 2014 },
issn = { 0975-8887 },
pages = { 34-43 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume102/number2/17790-8581/ },
doi = { 10.5120/17790-8581 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T22:32:06.093008+05:30
%A Abdelkader Elhanaoui
%A Elhoucein Aassif
%A Gerard Maze
%A Dominique Decultot
%T Guided Waves Propagation in Two-layer Tubes: Effects of the Inner Part in Contact with Air in the Cavity
%J International Journal of Computer Applications
%@ 0975-8887
%V 102
%N 2
%P 34-43
%D 2014
%I Foundation of Computer Science (FCS), NY, USA
Abstract

This paper studies the acoustic backscattering of short ultrasonic pulses by air-filled stainless steel-solid polymer two-layer cylindrical tubes immersed in water. The stainless steel one-layer tube is taken as a reference. The focus of this paper is on revealing the effects of physical characteristics of the solid polymer on the scattering phenomenon. The work is done from the calculation of the backscattered pressure, an inverse Fourier Transform, which provides a temporal signal. Wigner-Ville representation has been chosen in order to analyze the acoustic signal backscattered by each tube. For reduced frequencies ranging from 0. 1 to 200, the resonance spectrum and resonance trajectories have shown the manifestations of the guided waves. In this respect, the bifurcation of the A0 wave to the A0- and the A0+ waves has been observed. The authors investigate the reduced cutoff frequencies of the symmetrical and the antisymmetrical guided waves, specially the curves changes. The findings are then compared with those obtained for the stainless steel one-layer cylindrical tube. Reduced cutoff frequency values have also been extracted from Wigner-Ville time-frequency images. A good agreement has, therefore, been obtained. The study of acoustic scattering by stainless steel-solid polymer two-layer tubes has revealed the sliding of the reduced cutoff frequencies of A1 and S1 guided waves towards low values, due the repulsion phenomena. The relationship between reduced cutoff frequency and velocity of wave in the solid polymer is linear; which is a very interesting result.

References
  1. Murphy, J. D. , Breitenbach, E. D. and Überall,H. 1978 Resonance scattering of acoustic waves from cylindrical shells, J. Acoust. Soc. Am. 64, 677–683.
  2. Flax, L. , Gaunaurd, G. C. and Überall, H. 1981 Physical Acoustics XV, Academic Press, New York, 191-293.
  3. Maze, G. , Ripoche, J. 1983 Méthode d'isolement et d'identification des résonances (M. I. I. R. ) de cylindres et de tubes soumis à une onde acoustique plane dans l'eau, (Method of Isolation and Identification of Resonances (M. I. I. R. ) of cylinders and cylindrical shells immersed in water), Revue de Physique Appliquée. 18, 319-326.
  4. Maze, G. , Izbicki,J. -L. and Ripoche, J. 1985 Resonances of plates and cylinders: Guided waves, Journal of the Acoustical Society of America 77, 1352-1357.
  5. Sammelmann, G. S. , Trivett, D. H. , and Hackman, R. H. 1989 The acoustic scattering by a submerged, spherical shell. I. The bifurcation of the dispersion curve for the antisymmetric Lamb wave, J. Acoust. Soc. Am. 85, 114–124.
  6. Maze, G. , Léon, F. , Ripoche, J. , Klauson, A. , Metsaveer, J. and Überall, H. 1995 Nature de l'onde de Scholte sur une coque cylindrique, (Nature of the Scholte wave on a cylindrical shell), Acustica, International Journal on Acoustics 81, 201-213.
  7. Maze, G. , Léon, F. , Ripoche, J. and Überall, H. 1999 Repulsion phenomena in the phase-velocity dispersion curves of circumferential waves on elastic cylindrical shells, Journal of the Acoustical Society of America, 105, 1695-1701.
  8. Maze, G. , Izbicki, J. -L. and Ripoche,J. 1986 Acoustic scattering from cylindrical shells: guided waves and resonances of the liquid column, Ultrasonics 24, 354-361.
  9. Chati, F. , Léon, F. and Maze, G. 2005 Acoustic scattering by a metallic tube with a concentric solid polymer cylinder coupled by a thin water layer. Influence of the thickness of the water layer on the two Scholte-Stoneley waves, Journal of the Acoustical Society of America 118, 2820-2828.
  10. Liang-Wu Cai, and Sànchez Dehesa, J. 2008 Acoustic scattering by radially stratified scatterers, Journal of the Acoustical Society of America 124, 2715-2726.
  11. Hashminejad, S. M. and Rajabi, M. 2008 Acoustic scattering from functionally graded cylindrical shells, Journal Sound and Vibration 202, 208-228.
  12. Jamali, J. , Naet, M. H. , Honarvar, F. and Rajabi, M. 2011 Acoustic scattering from functionally graded cylindrical shells, Arch. Mech. Warszawa, 63 (1), 25-56.
  13. Jiangong Yu, Lefebvre, J. E. and Elmaimouni, L. 2013 Toroidal wave in multilayered spherical curved plates, Journal Sound and Vibration 332, 2816-2830.
  14. Hasheminejad, S. M. and Safari, N. 2005 Acoustic scattering from viscoelastically coated spheres and cylinders in viscous fluids, Journal of Sound and Vibration 280, 101–125.
  15. Flax, L. , Varadan, V. K. and Varadan, V. V. 1980 Scattering of an obliquely incident wave by an infinite cylinder, J. Acoust. Soc. Am. 68, 1832-1835.
  16. Abramovitz, M. and Stegun, I. A. 1964 Handbook of Mathematical Functions, National Bureau of Standards, Washington, DC, 435-442.
  17. Flax, L. , Gaunaurd, G. C. and Überall, H. 1981 Theory of Resonance Scattering, in Vol. 15 of Physical Acoustics Academic, New York, Chap. 3, 191–294.
  18. Cohen, L. 1995 Time-Frequency Analysis, Prentice Hall, PTR, the City University of New York, 1-316.
  19. Cohen, L. 1989 Time-frequency distribution—a review, Proc IEEE, 77(7), 941–981.
  20. Flandrin, P. 1993 Temps-Fréquence, Hermès, Paris, 7-390.
Index Terms

Computer Science
Information Sciences

Keywords

Acoustic backscattering Two-layer cylindrical tube Resonance spectrum Wigner-Ville time-frequency representation.