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- W2380843949 abstract "The potential of the crack detection method based on multi-resolution analysis of wavelet was revealed in the light of the response at a single point on a beam-like structure subjected to concentrated moving loads.When moving along the structure,the moving loads cause small distortions in the dynamic response of the beam-like structure at the crack locations.In general,these small distortions are difficult to be detected visually.An ANSYS model of a cracked beam was established.The transient analysis of moving load was carried out by shifting the point of the concentrated force.The response at the mid-span of beam-like structure was calculated and processed with multi-resolution wavelet transformation.The crack on the beam-like structure was then found in accordance with the position of peak value in multi-resolution wavelet analysis of the signals of deflection,velocity and acceleration of the moving load.Furthermore,based on the principle of superposition,the solution obtained for a single moving load was expanded to the case of a series of identical,equi-distant moving loads and opposite direction moving loads,and the key parameter dominating the dynamic response of the beam-like structure was identified.The effects of several cracks and the selection of best wavelet functions were discussed in detail.The proposed method is applicable for low velocity-movements while for high velocity-movements it is not recommended." @default.
- W2380843949 created "2016-06-24" @default.
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- W2380843949 date "2011-01-01" @default.
- W2380843949 modified "2023-09-23" @default.
- W2380843949 title "Dynamic response and crack detection of simply supported beam under moving loads" @default.
- W2380843949 hasPublicationYear "2011" @default.
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