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Proceedings Paper

Measurement of the velocities in the transient acceleration process using all-fiber photonic Doppler velocimetry
Author(s): Jian Wang; Chong-qing Wu; Hong-wei Song; Tao Yu; Jing-jing Xu
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Paper Abstract

Based on analysis of basic photonic Doppler velocimetry (PDV), a formula to measure velocity variation in a single cycle is put forward. PDV has been improved in three aspects, namely, the laser, the detector and the data processing. A measurement system for velocity of the initial stage of a shock motion has been demonstrated. Instantaneous velocity measurements have been performed. The experimental results have a good agreement with the values obtained from the accelerometer. Compared with the traditional fringe method, the proposed method in this paper can identify instantaneous velocity variation. So it is particularly suitable for measuring the velocity in the transient acceleration process of shock waves and detonation waves.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77536F (17 May 2011); doi: 10.1117/12.886469
Show Author Affiliations
Jian Wang, Beijing Jiaotong Univ. (China)
Chong-qing Wu, Beijing Jiaotong Univ. (China)
Hong-wei Song, Institute of Mechanics (China)
Tao Yu, Beijing Jiaotong Univ. (China)
Jing-jing Xu, Beijing Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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