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Proceedings Paper

Multi-beam laser heterodyne measurement with ultra-precision for Young modulus based on oscillating mirror modulation
Author(s): Y. Chao Li; Q. Ding; Y. Gao; L. Ling Ran; J. Ru Yang; C. Yu Liu; C. Hui Wang; J. Feng Sun
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Paper Abstract

This paper proposes a novel method of multi-beam laser heterodyne measurement for Young modulus. Based on Doppler effect and heterodyne technology, loaded the information of length variation to the frequency difference of the multi-beam laser heterodyne signal by the frequency modulation of the oscillating mirror, this method can obtain many values of length variation caused by mass variation after the multi-beam laser heterodyne signal demodulation simultaneously. Processing these values by weighted-average, it can obtain length variation accurately, and eventually obtain value of Young modulus of the sample by the calculation. This novel method is used to simulate measurement for Young modulus of wire under different mass by MATLAB, the obtained result shows that the relative measurement error of this method is just 0.3%.

Paper Details

Date Published: 21 August 2014
PDF: 7 pages
Proc. SPIE 9233, International Symposium on Photonics and Optoelectronics 2014, 923317 (21 August 2014); doi: 10.1117/12.2064949
Show Author Affiliations
Y. Chao Li, Heilongjiang Univ. (China)
Q. Ding, Heilongjiang Univ. (China)
Y. Gao, Heilongjiang Univ. (China)
L. Ling Ran, Heilongjiang Univ. (China)
J. Ru Yang, Heilongjiang Univ. (China)
C. Yu Liu, Heilongjiang Univ. (China)
C. Hui Wang, Harbin Institute of Technology (China)
J. Feng Sun, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 9233:
International Symposium on Photonics and Optoelectronics 2014
Zhiping Zhou, Editor(s)

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