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Proceedings Paper

Non-contact measuring technique for the vibration test of the bent structure
Author(s): Liguo Sun; Chengbin Du; Yuquan Chen
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Paper Abstract

The method of non-contact measurement is applied to test the vibration of bent top. Firstly, vibration velocities at the bent top along light paths were measured with the PDV-100 at two different positions. And secondly, vibration velocities at the bent top along direction and vertical direction of the rail were calculated. Velocity spectrum is changed into displacement spectrum by the method of frequency-spectrum- transformation. Curve of the vibration displacement time history is obtained finally. This method is very useful for the case when testing instrument can not be arranged on the direction of vibration due to the restriction of site condition.

Paper Details

Date Published: 25 August 2009
PDF: 6 pages
Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 73753S (25 August 2009); doi: 10.1117/12.839267
Show Author Affiliations
Liguo Sun, Hohai Univ. (China)
Chengbin Du, Hohai Univ. (China)
Yuquan Chen, Hohai Univ. (China)


Published in SPIE Proceedings Vol. 7375:
ICEM 2008: International Conference on Experimental Mechanics 2008
Xiaoyuan He; Huimin Xie; YiLan Kang, Editor(s)

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