In the material processing such as shock synthesis and powder consolidation by shock waves the method for generating dynamic pressure is a vital factor for the quality of the final recovered materials. A general and convenient way for producing shock wave demanded in such applications is to take advantage of the explosion effect from high explosive. Under normal conditions, a given high explosive can only provide some kind of magnitude of dynamic pressure after its explosion. Therefore, it is whether possible to obtain the higher dynamic pressure by adequately changing the form of the explosion of high explosive. Starting from this motivation, we put forward a new method for producing high dynamic pressure from the use of the overdriven detonation of high explosive. The proposed device consists of the following configurations. A metal flyer accelerated by the high explosive is used to impact another layer of high explosive to incur an overdriven detonation in this layer of explosive. The overdriven detonation of high explosive acts on the powder materials, bringing out high dynamic pressures to the materials studied. To examine the efficiency of this combination on the improvement of dynamic pressure, a numerical computation is performed on this system. The details on the illustration of this method as well as the results of numerical investigation will be given.
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e-mail: z-liu@aist.go.jp
e-mail: tanaka@aist.go.jp
e-mail: itoh@mech.kumamoto-u.ac.jp
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A Method for Producing Extra-High Dynamic Pressure Due to the Efficient Use of High Explosive
Zhi-Yue Liu,
e-mail: z-liu@aist.go.jp
Zhi-Yue Liu
Research Center for Explosion Safety, National Institute of Advanced Industrial Science and Technology, Onogawa 16-1, Tsukuba, Ibaraki 305-8565, Japan
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Katsumi Tanaka,
e-mail: tanaka@aist.go.jp
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
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Shigeru Itoh
e-mail: itoh@mech.kumamoto-u.ac.jp
Shigeru Itoh
Shock Wave and Condensed Matter Research Center, Kumamoto University, Kurokami 2-39-1, Kumamoto, Kumamoto 860-8555, Japan
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Zhi-Yue Liu
Research Center for Explosion Safety, National Institute of Advanced Industrial Science and Technology, Onogawa 16-1, Tsukuba, Ibaraki 305-8565, Japan
e-mail: z-liu@aist.go.jp
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
e-mail: tanaka@aist.go.jp
Shigeru Itoh
Shock Wave and Condensed Matter Research Center, Kumamoto University, Kurokami 2-39-1, Kumamoto, Kumamoto 860-8555, Japan
e-mail: itoh@mech.kumamoto-u.ac.jp
Contributed by the Pressure Vessels and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received by the PVP Division May 27, 2003; revision received June 22, 2003. Associate Editor: S. Y. Zamrik.
J. Pressure Vessel Technol. May 2004, 126(2): 264-268 (5 pages)
Published Online: May 5, 2004
Article history
Received:
May 27, 2003
Revised:
June 22, 2003
Online:
May 5, 2004
Citation
Liu, Z., Tanaka, K., and Itoh, S. (May 5, 2004). "A Method for Producing Extra-High Dynamic Pressure Due to the Efficient Use of High Explosive ." ASME. J. Pressure Vessel Technol. May 2004; 126(2): 264–268. https://doi.org/10.1115/1.1687384
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