2013
DOI: 10.1117/12.2012249
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Crack detection with Lamb wave wavenumber analysis

Abstract: In this work, we present our study of Lamb wave crack detection using wavenumber analysis. The aim is to demonstrate the application of wavenumber analysis to 3D Lamb wave data to enable damage detection. The 3D wavefields (including v x , v y and v z components) in time-space domain contain a wealth of information regarding the propagating waves in a damaged plate. For crack detection, three wavenumber analysis techniques are used: (i) two dimensional Fourier transform (2D-FT) which can transform the time-spa… Show more

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Cited by 15 publications
(11 citation statements)
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“…Local wavenumber analysis proposed in is based on 3D FT. In this procedure, spatial windowing of full wavefield data is applied.…”
Section: Full Wavefield Signal Processing For Damage Detectionmentioning
confidence: 99%
“…Local wavenumber analysis proposed in is based on 3D FT. In this procedure, spatial windowing of full wavefield data is applied.…”
Section: Full Wavefield Signal Processing For Damage Detectionmentioning
confidence: 99%
“…However, this approach does not retain the spatial information. Through a spatial windowing technique, spatial information can be retained and the relationship between location and frequency/wavenumber can be revealed [14][15][16].…”
Section: Space-frequency-wavenumber Representationmentioning
confidence: 99%
“…Anomalies of GW propagating in honeycomb core sandwich plates with debonding were studied numerically, as well as by using laser vibrometer data by Zhao et al [13]. Various techniques of damage localization were developed in recent years using various phenomena like wave reflection detection [14], local standing wave [15], a local change in wavelength [16], energy distribution variations [17,18], local magnitude decrease [19], etc. GW measurement techniques, along with full wavefield processing techniques for damage detection, were summarized in the paper [20].…”
Section: Introductionmentioning
confidence: 99%