Defect identification in rods subject to forced vibrations using the spatial wavelet transform

Use of the wavelet transform (WT) to study the forced vibrations in a rod in order to detect the presence of a defect is proposed. The axial vibrations in an inhomogeneous rod, produced by the application of different forces, are simulated by the Network Simulation Method and the obtained response i...

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Bibliographic Details
Published inApplied acoustics Vol. 68; no. 6; pp. 699 - 715
Main Authors Castro, E., García-Hernández, M.T., Gallego, A.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.06.2007
Elsevier
Subjects
Acoustics
Damage detection
Exact sciences and technology
Forced vibrations
Fundamental areas of phenomenology (including applications)
Network simulation method
Noise
Physics
Structural acoustics and vibration
Structural health monitoring
Wavelet transform
Forced vibrations
Wavelet transform
Structural health monitoring
Damage detection
Network simulation method
Noise
Forced vibration
Rod
Identification
Displacement
Wavelet transformation
Network
Simulation model
Structure
Comparative study
Monitoring
Defect detection
Damaging
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Summary:Use of the wavelet transform (WT) to study the forced vibrations in a rod in order to detect the presence of a defect is proposed. The axial vibrations in an inhomogeneous rod, produced by the application of different forces, are simulated by the Network Simulation Method and the obtained response is analyzed with the WT. An analysis of the detection and location of defects for several applied forces and defects generated by locally changing density or stiffness of the rod is presented. A noise test was carried out to check the robustness of the technique in real situations.
ISSN:0003-682X
1872-910X
DOI:10.1016/j.apacoust.2006.04.003