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Proceedings Paper

Sonde Optique A Etages Pour La Detection Des Ecailles Enregistrement Par Fibre Optique Et Camera Electronique A Fente
Author(s): Jean-Pierre Gauthier; Michel Bouchu
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Paper Abstract

The method of hydrodynamic diagnostic discribed in the other communication we present at this congress, which uses a shock - ionized probe, a fiber optic transmission and a streak electronic camera recorder allows us to design new devices with multi-effects. We describ e an optical probe composed of ten small 0.2 mm thick spaces separated from one another by transparent glass plates 1.5 mm thick. The sweep record shows series of short flashes following exactly the moving and the pressure level of the front shock wave in the probe. The experience we are to present, shows some of the avantages of using this kind of diagnostic. The results wich are obtained with the lead plate striking the probes at a 2.5 mm//us speed show successives shocks in these multi-stages optical probes. An X-Ray experience made in the same conditions make clear that this hapvensbecause of a monaspall detached from the main plate 2 mm ahead and producing a previous shock before the main one. This method does not pretend to measure the speed of the scale, its thickness ... etc, therefore we are only looking for an accident during the target moving or not. Notice the reduced dimensions of this king of probe, the diameter of which is 4 mm, the length 20 mm and there is very easy to set up.

Paper Details

Date Published: 27 July 1979
PDF: 4 pages
Proc. SPIE 0189, 13th Intl Congress on High Speed Photography and Photonics, (27 July 1979); doi: 10.1117/12.957571
Show Author Affiliations
Jean-Pierre Gauthier, Centre d'Etudes de Vaujours - Service Moyens d'Essais (France)
Michel Bouchu, Centre d'Etudes de Vaujours - Service Moyens d'Essais (France)

Published in SPIE Proceedings Vol. 0189:
13th Intl Congress on High Speed Photography and Photonics
Shin-Ichi Hyodo, Editor(s)

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