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Proceedings Paper

Double Exposed Photography Of Flying Small Particles In High Speed Spray By The Use Of Delay System With Optical Fiber
Author(s): S. Umezu; T. Egashira; S. Hatano; T. Murakami
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Paper Abstract

A new photographic technique to measure the velocity of small particles flying at high speed has been developed. A pulse Ruby laser and an optical fiber system are employed for taking a double exposed photograph in a very short time interval. The delay time is precisely determined by setting the fiber length, then the accuracy of velocity measurements is mainly influenced by the measurements of moving distances of particles. This new technique is applied to observation of diesel fuel spray, and the usefulness of the technique is confirmed.

Paper Details

Date Published: 7 June 1989
PDF: 4 pages
Proc. SPIE 1032, 18th Intl Congress on High Speed Photography and Photonics, (7 June 1989); doi: 10.1117/12.969123
Show Author Affiliations
S. Umezu, Oita College of Technology (Japan)
T. Egashira, Kyushu Sangyou University (Japan)
S. Hatano, Kyushu University (Japan)
T. Murakami, Kyushu University (Japan)

Published in SPIE Proceedings Vol. 1032:
18th Intl Congress on High Speed Photography and Photonics
DaHeng Wang, Editor(s)

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