The Use Of A Perot Fabry Velocimeter To The Study Of Shock Loaded Polystyrene

Bernier H.; Durand M.; Lalle P.

doi:10.1117/12.936284

9 January 1984 The Use Of A Perot Fabry Velocimeter To The Study Of Shock Loaded Polystyrene

Bernier H., Durand M., Lalle P.

Proceedings Volume 0427, High Speed Photography, Videography, and Photonics I; (1984) https://doi.org/10.1117/12.936284
Event: 27th Annual Technical Symposium, 1983, San Diego, United States

Abstract

We describe the present capabilities of a Perot Fabry velocimeter used in the study of shock waves. The main characteristics of this velocimeter are : the ability to give two measurements in the same experiment, a duration of the record in the range 500 ns - 200 μs, an accuracy of - 2 m/s, the possibility of velocity measurements of specular reflecting surfaces or scratched surfaces, the velocities being measured in the direction of the normally reflected beam or in a direction making some angle from the normally reflected beam. The application of this velocimeter to the study of polystyrene submitted to a shock loading followed by unloading is shown. The shock polar is described by three segments in which the relation between shock U and material velocities u are U = 2,6 + 1,46 u if u< 2,82 km/s ; U = 2,03 + 1,41 u if u > 3,6 km/s and U = 5,23 + 0,52 u in the intermediate range.

Citation Download Citation

Bernier H., Durand M., and Lalle P. "The Use Of A Perot Fabry Velocimeter To The Study Of Shock Loaded Polystyrene", Proc. SPIE 0427, High Speed Photography, Videography, and Photonics I, (9 January 1984); https://doi.org/10.1117/12.936284

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