Modal analysis using camera-based heterodyne interferometry and acoustic excitation

Zonghui Chen,Wen Xiao,Feng Pan,Hongliang Hao,Lan Ma

Mechanical Systems and Signal Processing（2019）

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摘要

•A CMOS-DVR based heterodyne interferometry is developed for full-field vibration measurement.•Acoustic wave is used for vibration excitation avoiding impairment on the structure.•Modal parameters of a steel cantilever beam are extracted using heterodyne interferometry and acoustic excitation.•The experimental results are verified by FEA and LDV.

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关键词

Modal analysis,Full-field vibration measurement,Heterodyne interferometry,Acoustic excitation

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