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Keywords: cross-correlation function
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Proceedings Papers

Operational Modal Analysis and Baseline-Free Damage Detection of a Beam Under Random Excitation via a Novel Demodulation Method With a Reference Signal

Linfeng Lyu, Ke Yuan, Weidong Zhu
Proc. ASME. IMECE2023, Volume 1: Acoustics, Vibration, and Phononics, V001T01A016, October 29–November 2, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2023-116852
https://doi.org/10.1115/IMECE2023-116852
... laser Doppler vibrometer is calculated, and the cross-correlation function is multiplied by a sinusoidal signal whose frequency is one estimated damped natural frequency of the beam. The processed cross-correlation function is filtered by a low-pass filter to obtain the undamped mode shape of the beam...
View Paper titled, Operational Modal Analysis and Baseline-Free Damage Detection of a Beam Under Random Excitation via a Novel Demodulation Method With a Reference Signal
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Topics: Damage, Laser Doppler vibrometers, Modal analysis, Random excitation, Signals