Effect of Surface Cracks on Rayleigh Wave Propagation: An Experimental Study
Publication: Journal of Structural Engineering
Volume 128, Issue 2
Abstract
This experimental study investigates the use of Rayleigh waves for crack detection in structural elements. Receiver arrays measure surface accelerations at various locations with respect to a vertical slot cut into a thin Plexiglas sheet. Two-dimensional Fourier transform calculations provide Rayleigh wave dispersion and energy with respect to various slot depths. In addition, autospectrum calculations aid in defining slot location. It is shown that slots reflect short wavelengths and allow the transmission of long wavelengths. Slot location is easily identified from autospectrum measurements; however, accurate determination of slot depth is dependent on the aperture function of the array.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 128 • Issue 2 • February 2002
Pages: 240 - 248
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Aug 7, 2000
Accepted: Aug 13, 2001
Published online: Feb 1, 2002
Published in print: Feb 2002
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