Streak Records In Wedge Technique With High Resolution

Manfred Held

doi:10.1117/12.975541

1 September 1987 Streak Records In Wedge Technique With High Resolution

Manfred Held

Proceedings Volume 0674, 17th Intl Congress on High Speed Photography and Photonics; (1987) https://doi.org/10.1117/12.975541
Event: 17th International Conference on High Speed Photography and Photonics, 1986, Pretoria, South Africa

Abstract

Resolution in space can be improved considerably with the wedge technique. A prerogative is, however, that the event proceeds uniformly across the plane of the wedge. Arrangements are in general chosen so that the event must arrive at the wedge simultaneously. This involves the use of highly accurate and elaborate plane wave generators. The present paper proposes to use a method that permits measuring both the time of arrival of a shock or detonation wave and the arrival of the shock wave after a certain distance of propagation, which can be recorded continuously along the wedge. However, the wedge material must be transparent. By means of the multi-streak-technique, the shock velocity can be observed as a function of the thickness of the wedge across a larger plane. In this way, phenomena can be observed and recorded not only when the wave front is plane, but also when the phenomenon is converging or diverging.

Citation Download Citation

Manfred Held "Streak Records In Wedge Technique With High Resolution", Proc. SPIE 0674, 17th Intl Congress on High Speed Photography and Photonics, (1 September 1987); https://doi.org/10.1117/12.975541

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