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Experimental model of the role of cracks in the mechanism of explosive eruption of St. Helens-80

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Abstract

A unique mini model of explosive volcano eruption through a formed system of cracks is developed. The process of crack formation and development is simulated by electric explosion of a conductor in a plate of optically transparent organic glass submerged into water. The explosion of a wire aligned with a through hole in the plate generates shock-wave loading along the plate and forms cracks. The fundamental role of high velocity flow in crack wedging by a high power hydrodynamic flow of a pulsating explosion cavity has been demonstrated.

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Authors and Affiliations

  1. Lavrentev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    V. K. Kedrinskii & A. A. Skulkin

Authors
  1. V. K. Kedrinskii
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  2. A. A. Skulkin
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Corresponding author

Correspondence to V. K. Kedrinskii.

Additional information

Original Russian Text © V.K. Kedrinskii, A.A. Skulkin, 2017, published in Zhurnal Tekhnicheskoi Fiziki, 2017, Vol. 87, No. 7, pp. 1008–1013.

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Kedrinskii, V.K., Skulkin, A.A. Experimental model of the role of cracks in the mechanism of explosive eruption of St. Helens-80. Tech. Phys. 62, 1024–1029 (2017). https://doi.org/10.1134/S1063784217070052

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  • DOI: https://doi.org/10.1134/S1063784217070052

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