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- W2392971331 abstract "A continuous wavelet transform is applied to analyzing circumferential guided waves in an annulus with an interior radial crack. For circumferential guided waves signals inspired by an impact load, continuous wavelet transform based on Gabor wavelet can effectively solve the frequency dispersion problem in wave propagating process, and the arrival times and amplitudes of each frequency can be extracted from dynamic strain signals at an arbitrary point on the surface of the annulus. A thin-wall annulus with inner-to-outer radius ratio 0.95 is discussed by this method, and it can be considered separately by the different model with different crack depth. Because the first and second modes waves are propagating at all frequency-domain, they can be extracted by a suitable wavelet scaling parameter. After considering the interaction on crack and the mode conversion of these two modes waves, the location of the interior radial crack in the annulus can be identified quantificationally by the wavelet result of the echo signals. Then, the extent of damage can also be estimated by analyzing the reflected wave from crack surface. This method is a powerful tool to detect the interior damage in thin-walled tubes, and it is convenient to extend to practical engineering applications." @default.
- W2392971331 created "2016-06-24" @default.
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- W2392971331 date "2004-01-01" @default.
- W2392971331 modified "2023-09-24" @default.
- W2392971331 title "DETECTION OF THE RADIAL CRACK IN A THIN-WALLED TUBE" @default.
- W2392971331 hasPublicationYear "2004" @default.
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