Results 111 to 120 of about 1,219 (167)
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Propellants, Explosives, Pyrotechnics, 1978
AbstractThe facilities and methods in use at Nobel's Explosives Company Ltd. for assessing explosive potential by the underwater method are described. Quantities measured include the velocity of detonation, the bubble period, the maximum bubble radius and the pressure‐time signature of the shock wave.
S. Paterson, A. H. Begg
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AbstractThe facilities and methods in use at Nobel's Explosives Company Ltd. for assessing explosive potential by the underwater method are described. Quantities measured include the velocity of detonation, the bubble period, the maximum bubble radius and the pressure‐time signature of the shock wave.
S. Paterson, A. H. Begg
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Underwater electrical wire explosion
2007 16th IEEE International Pulsed Power Conference, 2007Summary form only given. We report on experimental and computer modeling research of underwater electrical wire explosions (UEWE) which present a promising method tor generation of strong shock waves (SSW) and non-ideal plasma. Micro-and nano-second time scale generators for UEWE of Al, Cu and W wires were employed.
Ya. E. Krasik +8 more
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Underwater explosion of spherical explosives
Journal of Materials Processing Technology, 1999Abstract Underwater explosion of high explosive generates underwater shock waves. This phenomenon has been observed by optical measurement. Propagation histories of underwater shock waves in the range close to explosive have been obtained by processing photographs.
Akio Kira, Masahiro Fujita, Shigeru Itoh
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Underwater electrical wire explosion
Plasma Sources Science and Technology, 2010A brief review of the results obtained in recent research of underwater electrical wire explosions using microsecond and nanosecond generators is presented. It was shown that the increase in the rate of energy input into the exploding wire allows one to increase the wire temperature and amplitude of shock waves (SWs).
Ya E Krasik +10 more
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Low-Energy Underwater Explosions
The Physics of Fluids, 1968Results are presented concerning a theoretical and experimental investigation of low-energy spherical underwater explosions. The theoretical analysis makes use of the explicity hydrodynamic-shock-tube solution, a simple incompressible bubble theory, and its modification which accounts for the finite signal propagation times and the low compressibility ...
L. E. Heuckroth, I. I. Glass
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The Underwater Detection of TNT Explosive
IEEE Transactions on Nuclear Science, 2011Tagged neutron inspection system was used for the underwater detection of explosives. Neutrons were produced in the d + t nuclear reaction with API 120 sealed tube neutron generator. Five kilograms of TNT explosive were measured in a pool filled with water. Measurements were done in target in, target out configuration.
Sudac, Davorin +3 more
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The Journal of the Acoustical Society of America, 1976
Explosions have been used as underwater acoustic sources for many years, sometimes at rates exceeding 50 000 charges a year. During the past decade the types of studies undertaken with explosion sources have changed in character, and the requirements on charge levels have become more demanding. For example, an accuracy of ±1 dB in narrow-band levels is
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Explosions have been used as underwater acoustic sources for many years, sometimes at rates exceeding 50 000 charges a year. During the past decade the types of studies undertaken with explosion sources have changed in character, and the requirements on charge levels have become more demanding. For example, an accuracy of ±1 dB in narrow-band levels is
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EMISSION BY UNDERWATER EXPLOSIONS
GEOPHYSICS, 1970Theoretical and experimental investigations of the seismic effects of underwater explosions of dynamite charges are described. We investigate the acoustic efficiency in a broad frequency band and in the seismic frequency band, the partition of energy between the shock wave and bubble pulses, the seismic effects of cavitation due to ghost reflection at
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Spectra of Large Underwater Explosions
The Journal of the Acoustical Society of America, 1965The line structure present in the spectra of small underwater explosive charges, due to interference between shock wave and bubble pulse, has often been observed. Signals received at Bermuda from two recent large underwater explosions exhibit similar characteristics.
G. R. Hamilton, Brian Patterson
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An underwater explosive shock gun
Journal of Fluid Mechanics, 1967A theoretical study is made of a simple design for an underwater shock gun, which consists of a chamber in the form of a hollow circular cone, with a spherical sector of explosive charge fitted into the apex. When the explosive is initiated at the apex, the resulting sector of a spherical blast wave will be diffracted by expansion waves moving inwards ...
A. Coombs, C. K. Thornhill
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