Abstract
A novel structural damage detection method with a new damage index, i.e., the statistical moment-based damage detection (SMBDD) method in the frequency domain, has been recently proposed. The aim of this study is to extend the SMBDD method in the frequency domain to the time domain for building structures subjected to non-Gaussian and non-stationary excitations. The applicability and effectiveness of the SMBDD method in the time domainis verified both numerically and experimentally. Shear buildings with various damage scenarios are first numerically investigated in the time domain taking into account the effect of measurement noise. The applicability of the proposed method in the time domain to building structures subjected to non-Gaussian and non-stationary excitations is then experimentally investigated through a series of shaking table tests, in which two three-story shear building models with four damage scenarios aretested. The identified damage locations and severities are then compared with the preset values. The comparative results are found to be satisfactory, and the SMBDD method is shown to be feasible and effective for building structures subjected to non-Gaussian and non-stationary excitations.
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Supported by: The Hong Kong Polytechnic University through a PhD studentship for the first author and the Research Grants Council of Hong Kong (PolyU 5319/10E) for the second author
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Zhang, J., Xu, Y.L., Li, J. et al. Statistical moment-based structural damage detection method in time domain. Earthq. Eng. Eng. Vib. 12, 13–23 (2013). https://doi.org/10.1007/s11803-012-0147-8
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DOI: https://doi.org/10.1007/s11803-012-0147-8