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- W4385301195 abstract "Modal vibration analysis is crucial in dynamic analysis and has been extensively employed for structural damage detection and health monitoring. This paper proposes a nondestructive approach utilizing camera-based heterodyne interferometry and acoustic excitation for modal analysis, aiming to accurately identify a structure's modal parameters. Using a high-speed complementary metal oxide semiconductor (CMOS) camera, full-field images of a vibrating structure with high-density spatial resolution can be quickly captured and analyzed to obtain sufficient vibration response data for modal analysis through heterodyne interferometry. In the experiment, a beam's vibration response under random white noise excitation is detected with heterodyne interferometry to extract natural frequencies. Mode shapes are derived from the full-field vibration response determined by heterodyne interferometry using an acoustic wave at natural frequencies. The findings display a considerable consistency with results from finite element analysis (FEA) and laser Doppler vibrometry (LDV), indicating that the proposed method serves as an effective technique for vibration modal analysis." @default.
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- W4385301195 date "2023-06-19" @default.
- W4385301195 modified "2023-10-16" @default.
- W4385301195 title "Vibration Modal Assessment Using Acoustic Stimulation and Camera-Assisted Heterodyne Interferometry" @default.
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- W4385301195 doi "https://doi.org/10.1109/metroaerospace57412.2023.10189941" @default.
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