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Proceedings Paper

Damping measurement using laser self-mixing interference with spectrum analysis
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Paper Abstract

A method for measuring the damping coefficient of vibrating target based on Fourier transform of self-mixing interference signal is presented. Theoretical researches indicate, the dominant harmonic order of the laser self-mixing signal is proportional to the amplitude of vibration. Based on this theory, damping efficient can be extracted from the ratio between the amplitudes of the vibration target at different moments. The error of the damping coefficient is about 4%.This method characterized by simple structure, non-contact measurement and high accuracy, can be extensively applied in measurement of industrial harmonic damping vibration.

Paper Details

Date Published: 7 November 2018
PDF: 7 pages
Proc. SPIE 10819, Optical Metrology and Inspection for Industrial Applications V, 1081910 (7 November 2018); doi: 10.1117/12.2502438
Show Author Affiliations
Rui Wang, Xiamen Univ. (China)
Yanbin Xiong, Xiamen Univ. (China)
Teng Fen, Xiamen Univ. (China)
Huiru Yang, Xiamen Univ. (China)
Hanqiao Chen, Xiamen Univ. (China)
Wencai Huang, Xiamen Univ. (China)

Published in SPIE Proceedings Vol. 10819:
Optical Metrology and Inspection for Industrial Applications V
Sen Han; Toru Yoshizawa; Song Zhang, Editor(s)

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