Azimuthal Characteristics on Blast Wave from a Cylindrical Charge – Small Scale Experiment –

Azimuthal Characteristics on Blast Wave from a Cylindrical Charge – Small Scale Experiment –

Tomotaka Homae, Yuta Sugitana,Tohoharu Matsumura, Kunihiko Wakabayashi

Abstract. Azimuthal characteristics on blast wave from a cylindrical charge were experimentally investigated. A cylindrical PETN pellet, weight of 0.50 g, was detonated on a large steel plate, which is a model of the ground surface. 0°was defined as the direction of detonation, which was correspondence with the central symmetry axis of the cylindrical pellet. 12 pressure transducers were embedded in the steel plate to measure the pressure histories on the plate. The direction of the pellet and detonation was rotated every 30° and the distribution of blast pressure histories around the explosive were obtained. The peak overpressure and impulse were high in the range from 30° to 80° compared with the standard explosion data in which the explosive was placed vertically for a two-dimensional axisymmetric explosion on the steel plate and detonated from the top of the explosive. On the contrary, these blast parameters were low in the range from 90° to 130°. These blast pressures were not low in the direction of 180°. These findings are important for safety. The data will be compared with numerical simulations in future.

Keywords
Explosion, Azimuth Angle, Non-Spherical Explosive, Blast Pressure, Impulse

Published online 7/30/2019, 4 pages
Copyright © 2019 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Tomotaka Homae, Yuta Sugitana,Tohoharu Matsumura, Kunihiko Wakabayashi, Azimuthal Characteristics on Blast Wave from a Cylindrical Charge – Small Scale Experiment –, Materials Research Proceedings, Vol. 13, pp 53-56, 2019

DOI: https://doi.org/10.21741/9781644900338-9

The article was published as article 9 of the book Explosion Shock Waves and High Strain Rate Phenomena

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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