Determination of the Thickness of Elastic Tube Using the Time-Frequency Analysis of Wigner-Ville

被引：4
|
作者：
Latif, R. [1 ,2 ]
Latif, R. [1 ,2 ]
Aassif, E. [2 ]
Laaboubi, M. [2 ]
Maze, G. [3 ]
机构：
[1] Univ Ibn Zohr, Ecole Natl Sci Appliquees, ESSI, Agadir 80000, Morocco
[2] Univ Ibn Zohr, Lab Metrol & Traitement Informat, Agadir 80000, Morocco
[3] Univ Havre, Lab Ondes & Milieux Complexes, Le Havre, France
来源：
ACTA ACUSTICA UNITED WITH ACUSTICA | 2009年 / 95卷 / 05期
关键词：
SIGNAL ANALYSIS; SCATTERING; TOOL; REPRESENTATION; RESONANCES; PLATE; MODE;
D O I：
10.3813/AAA.918215
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The dimensional characterization of an elastic cylindrical shell can be done thanks to its cut-off frequencies of the acoustic circumferential waves propagating around the circumferential of the shell. The Wigner-Ville time-frequency representation, that take into account both the time and frequency parameters of a signal, is used in this study to access to the sought parameters. In this paper, the Wigner-Ville Distribution is applied to acoustic experimental signals backscattered by an aluminium tube with a radii radio b/a (a: external radius, b: internal radius). The time-frequency images of Wigner-Ville obtained permit to determine the cut-off frequency. From these frequencies we have determined with precision the radii radio b/a and also the aluminium cylindrical shell thickness.
引用
收藏
页码：843 / 848
页数：6
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