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A Test Bench for the Shock Loading by an Electrical Explosion of Foils

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Abstract

Pulsed mechanical loads on objects are produced upon an electrical explosion of metal foils with an area of <400 cm2. A bank of 48 ИК 100-0.4 УХЛ4 capacitors is mounted in four metallic tanks with oil insulation and stores an energy of up to 96 kJ. Each two capacitors are switched by a thyratron and transfer a current along a cable line to a common electrical explosion unit. Twenty-four spark gaps operate with a time spread of ±3 ns relative to the trigger pulse and have an electric strength margin of ∼80%. The total inductance of the circuit is ∼70 nH. The discharge current amplitude reaches 1.68 MA, and its oscillation quarter-period lasts ∼1.8 µs. Various designs for the electrical explosion unit, based on an aluminum foil 7 µm thick, and methods for measuring the mechanical impulse values are described. The distribution of impulse over the foil area is controlled by the number of exploded foil layers. All of the test bench units can be transported and promptly put into operation at a new site.

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Authors and Affiliations

  1. Russian Federal Nuclear Center, All-Russia Scientific Research Institute of Experimental Physics, pr. Mira 37, Sarov, Nizhni Novgorod oblast, 607190, Russia

    A. I. Gerasimov, V. A. Zolotov & V. V. Kul’gavchuk

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  1. A. I. Gerasimov
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  2. V. A. Zolotov
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  3. V. V. Kul’gavchuk
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__________

Translated from Pribory i Tekhnika Eksperimenta, No. 4, 2005, pp. 101–106.

Original Russian Text Copyright © 2005 by Gerasimov, Zolotov, Kul’gavchuk.

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Gerasimov, A.I., Zolotov, V.A. & Kul’gavchuk, V.V. A Test Bench for the Shock Loading by an Electrical Explosion of Foils. Instrum Exp Tech 48, 515–520 (2005). https://doi.org/10.1007/s10786-005-0089-8

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  • DOI: https://doi.org/10.1007/s10786-005-0089-8

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