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Proceedings Paper

Nonideal detonation of Al-rich emulsion explosives
Author(s): Shigeru Itoh; Katsuhiko Takahashi; Kenji Murata; Yukio Katoh; Akio Kira; Masaki Kojima; Masahiro Fujita
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Paper Abstract

It is known that emulsion explosives behave non-ideally in their detonation. The behavior of the non-ideal detonation has not yet been sufficiently investigated. In order to obtain a better comprehension of the non-ideal detonation behavior, optical measurements and measurements of the velocity of the detonation wave were carried out. Streak photographs were taken by an image converter camera using a usual shadowgraph system. Five kinds of emulsion explosives which differ the aluminum contents were used in experiments. These emulsion explosives were put into copper, aluminum and PMMA containers. In case of the copper pipe container, the velocity of the detonation wave is constant at any aluminum contents. But in the case of the PMMA pipe container, the velocity of the detonation wave becomes lower in proportion to aluminum contents. The shapes of the reaction zone and the front of the detonation zone were also recognized from the streak photographs. In case of the copper pipe container, the detonation wave is plane, but in case of PMMA pipe container, the detonation wave curves near the pipe wall and its shape is a convex. It is considered that acoustic impedance of the container have effects on the propagation of the detonation wave.

Paper Details

Date Published: 12 December 1997
PDF: 4 pages
Proc. SPIE 3173, Ultrahigh- and High-Speed Photography and Image-based Motion Measurement, (12 December 1997); doi: 10.1117/12.294553
Show Author Affiliations
Shigeru Itoh, Kumamoto Univ. (Japan)
Katsuhiko Takahashi, Kumamoto Univ. (Japan)
Kenji Murata, Kumamoto Univ. (Japan)
Yukio Katoh, Kumamoto Univ. (Japan)
Akio Kira, Kumamoto Univ. (Japan)
Masaki Kojima, Kumamoto Univ. (Japan)
Masahiro Fujita, Kumamoto Univ. (Japan)


Published in SPIE Proceedings Vol. 3173:
Ultrahigh- and High-Speed Photography and Image-based Motion Measurement
C. Bruce Johnson; Andrew Davidhazy; James S. Walton; Takeharu Goji Etoh; C. Bruce Johnson; Donald R. Snyder; James S. Walton, Editor(s)

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