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Proceedings Paper

A new thin-wall beam modal testing method based on single point laser continuous plane scanning vibration measurement
Author(s): Jigang Wu; Bin Qin; Xuejun Li; Qiancheng Zhao
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Paper Abstract

A high precision and fast testing method for pure modal of vibration body by continuous constant speed plane scanning vibration measurement using single point laser doppler vibrometer is proposed. Thin-walled beam as test object, single point laser continuous plane scanning vibration measurement modal testing scheme is proposed. The processing method for the actual vibration signal is investigated, and the calculating method for the upper and lower alternate envelope of vibration displacement signal is proposed. Thin-walled beam as test object, The modal test platform based on single point laser continuous constant speed plane scanning vibration measurement is put up, and the validity of the modal testing method is verified by the modal testing of thin sheet beam.

Paper Details

Date Published: 10 October 2013
PDF: 6 pages
Proc. SPIE 8916, Sixth International Symposium on Precision Mechanical Measurements, 89162G (10 October 2013); doi: 10.1117/12.2035704
Show Author Affiliations
Jigang Wu, Hunan Univ. of Science and Technology (China)
Bin Qin, Hunan Univ. of Science and Technology (China)
Xuejun Li, Hunan Univ. of Science and Technology (China)
Qiancheng Zhao, Hunan Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 8916:
Sixth International Symposium on Precision Mechanical Measurements
Shenghua Ye; Yetai Fei, Editor(s)

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