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- W1509636799 abstract "This article describes how cracks may develop and the modal shapes and frequencies of the cracked structure may change accordingly when the structure is subjected to dynamic or static loads. Based on this fact, a new method is proposed to locate beam cracks and to estimate their depths. The fault-induced modal shape and frequency changes of cracked structures are taken into account in order to construct a new hybrid crack detection method. The method includes two steps: crack localization and depth estimation. The locations of the cracks are determined by applying the wavelet transform to the modal shape. Using the measured natural frequencies as inputs, the depths of the cracks are estimated from a database established by wavelet finite element method. The effectiveness of the proposed hybrid two-step method is demonstrated by numerical simulation and experimental investigation of a cantilever beam with two cracks. The analyses presented in this article also indicated that the proposed method performed reasonably well at certain level of noise." @default.
- W1509636799 created "2016-06-24" @default.
- W1509636799 creator A5006189098 @default.
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- W1509636799 date "2012-05-11" @default.
- W1509636799 modified "2023-10-16" @default.
- W1509636799 title "Wavelet-Based Detection of Beam Cracks Using Modal Shape and Frequency Measurements" @default.
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- W1509636799 doi "https://doi.org/10.1111/j.1467-8667.2012.00760.x" @default.
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