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- W2890179776 abstract "Detection of incipient damage of structures at the earliest possible stage is desirable for successful implementation of any health monitoring system. In this paper, we focus on breathing crack problem and present a new reference-free algorithm for fatigue crack detection, localization, and characterization for beam-like structures. We use the spatial curvature of the Fourier power spectrum as a damage sensitive feature for fatigue crack identification. An exponential weighting function that takes into account nonlinear dynamic signatures, such as sub- and superharmonics, is proposed in the Fourier power spectrum in order to enrich the damage-sensitive features of the structure. Both numerical and experimental studies have been carried out to test and verify the proposed algorithm." @default.
- W2890179776 created "2018-09-27" @default.
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- W2890179776 date "2019-02-01" @default.
- W2890179776 modified "2023-09-27" @default.
- W2890179776 title "Reference-Free Breathing Crack Identification of Beam-Like Structures Using an Enhanced Spatial Fourier Power Spectrum with Exponential Weighting Functions" @default.
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- W2890179776 doi "https://doi.org/10.1142/s0219455419500172" @default.
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