Share Email Print
cover

Proceedings Paper

Multipoint velocity interferometer system for any reflector and its applications
Author(s): ZeRen Li; Ruchao Ma; Guanghua Chen; Yuankun Liu; Jun Liu; Jianquan Yao
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A Multi-Point velocity interferometer system for any reflector (VISAR) has been developed which can simultaneously measure velocity versus time histories of two to eight points by double delayed legs or two to sixteen points by single velocity sensitivity on a target or different objects during dynamic compression. A single-frequency laser beam is divided into two to eight or sixteen individual beams that are transmitted into an experimental device by incident fibers to illuminate measured points. Diffusely reflected laser beams from different measured points are separately collected by fiber detectors and guided by signal fibers into a common 'push and pull' interfering cavity with the same delay etalon to interfere. This not only simplifies the system structure and the experimental operation, but also eliminates the system error among measured points and makes the system almost as small in volume as that of a single-point VISAR. The Multi- Point VISAR possesses all the advantages of the traditional single-point VISAR as well as the temporal and the space resolution ability. We have used it to monitor velocity histories of several points on a target in a few explosion experiments, and good experimental results were obtained.

Paper Details

Date Published: 17 April 2001
PDF: 10 pages
Proc. SPIE 4183, 24th International Congress on High-Speed Photography and Photonics, (17 April 2001); doi: 10.1117/12.424288
Show Author Affiliations
ZeRen Li, Tianjin Univ. and Southwest Institute of Fluid Physics (China)
Ruchao Ma, Southwest Institute of Fluid Physics (China)
Guanghua Chen, Southwest Institute of Fluid Physics (China)
Yuankun Liu, Southwest Institute of Fluid Physics (China)
Jun Liu, Southwest Institute of Fluid Physics (China)
Jianquan Yao, Tianjin Univ. (China)


Published in SPIE Proceedings Vol. 4183:
24th International Congress on High-Speed Photography and Photonics
Kazuyoshi Takayama; Tsutomo Saito; Harald Kleine; Eugene V. Timofeev, Editor(s)

© SPIE. Terms of Use
Back to Top