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TECHNICAL PAPERS

A Method for Producing Extra-High Dynamic Pressure Due to the Efficient Use of High Explosive

[+] Author and Article Information
Zhi-Yue Liu

Research Center for Explosion Safety, National Institute of Advanced Industrial Science and Technology, Onogawa 16-1, Tsukuba, Ibaraki 305-8565, Japan

Katsumi Tanaka

Research Center for Developing Fluorinated Greenhouse Gas Alternatives, National Institute of Advanced Industrial Science and Technology, Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan

Shigeru Itoh

Shock Wave and Condensed Matter Research Center, Kumamoto University, Kurokami 2-39-1, Kumamoto, Kumamoto 860-8555, Japan

J. Pressure Vessel Technol 126(2), 264-268 (May 05, 2004) (5 pages) doi:10.1115/1.1687384 History: Received May 27, 2003; Revised June 22, 2003; Online May 05, 2004
Copyright © 2004 by ASME
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References

Figures

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Schematic illustration of ultra-high pressure experimental assembly. 1-detonator, 2-plane wave generator, 3-explosive I, 4-explosive holder I, 5-flyer, 6-standoff, 7-explosive II, 8-explosive holder II, 9-powder, 10-powder container, 11-momentum trap.
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Simplified computational model based on the experimental setup. 1-detonator, 2-plane wave generator, 3-explosive I, 4-flyer, 5-standoff, 6-explosive II, 7-water.
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Calculated flyer velocities with various flyer thicknesses under two explosive lengths
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Numerical representation of the dynamic process in form of pressure contour at several instants: (a) 0 μs, (b) 4.6 μs, (c) 6.7 μs, (d) 8.1 μs, and (e) 9.3 μs. Each image includes main explosive (or detonation products), flyer, thin explosive layer (or detonation products), and water.
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Calculated pressure profiles in thin explosive layer and water as the 2 mm aluminum flyer is used
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Calculated pressure profiles in thin explosive layer and water as the 1 mm aluminum flyer is used
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Calculated pressure profiles in the situation of 5 mm-long SEP explosive directly acting on 5 mm long water column
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Maximal pressure distributions along the axial direction in three cases: 1 mm thick flyer, 2 mm thick flyer, and explosive-water contact

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