Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"detonator"”.
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An evaluation of diver performance using different safety vest detonators
… the performance of SCUBA divers in pulling the detonator knob on the diver's personal floatation device while treading water. Three shapes, three sizes, and three positions of the detonator knob were tested to determine their effects on the time it took divers to activate the emergency …
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Electromagnetic modeling of hot-wire detonators using analytical and numerical methods with comparison to experiment
… electromagnetic (EM) characteristics of hot-wire detonators are determined in order to quantify more precisely their response to EM illumination. The analyses include a comprehensive study of detonators physical characteristics, which is then used to model detonators using transmission line …
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Numerical study of detonation in solid explosives under hydrodynamic and elastic-plastic confinement
… in mining. First, we consider the response of a detonator in isolation, guided by an underwater explosion test. Following validation, the strength of the blast wave is examined at several distances from the detonator. Results show that the blast wave in the near field is asymmetric and stronger …
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Automatic Detection of Elongated Objects in X-Ray Images of Luggage
… the automatic detection of elongated objects (detonators) in x-ray images using matched filtering, the Hough transform, and information fusion techniques. A sophisticated algorithm has been developed for detonator detection in x-ray images, and computer software utilizing this algorithm was …
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Explosive property of aluminum powder liquid oxygen mixture
… oxygen when fired without the use of a fixed detonator.</p>
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Determining the Reaction Zone Length in Shock Initiated PETN
… is a secondary explosive used in electrical detonators in the form of a pressed powder. The reaction zone length of PETN is smaller than that of most other explosives, therefore there is a lack of data due to insufficient resolution of existing methods. Furthermore, most prior work has been …
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Control for an optically powered firing set using miniature photovoltaic arrays
… deliver the transformed electrical energy to a detonator. In order for this system to be further optimized for implementation into an actual firing set, the output voltage state needs to be controlled and the temperature of the MPA and illuminating source minimized. This thesis reports on the …
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Multispectral optical depth measurements in post-detonation high explosive fireballs
… on a modified RP-80 exploding bridgewire (EBW) detonator, which is manufactured by Teledyne RISI. Five laser wavelengths were studied which cover the visible through long-wave infrared region of the spectrum. These 405nm, 532nm, 650nm, 1310nm and 9600nm lasers were used to probe the …
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Shock wave interactions at explosive/metallic interfaces
… two diameters of the armature end containing the detonator, but the cracks did not extend as would be expected when the tubing expanded under explosive pressurization. Such cracks are a cause of magnetic flux cut-off in generators, and such flux losses seriously affect generators' energy …
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Shock initiation of explosives under the microscope
… to practical systems such as those used in detonator systems such as the exploding bridge wire and exploding foil initiator. In our first foray into fast pyrometry we used low density octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) samples which were hand packed into wells containing …
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Investigating the use of rubber to attenuate the effect of blast load applied to a surrogate lower leg
… or an innocent civilian who activates the detonator. As such, land mines have reached epidemic proportions in the Third World, affecting both combatants and civilians, whether they are on foot or in a vehicle. When stepping on an anti-personnel land mine, traumatic amputation of the foot, …
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Evaluating the legitimacy of national security practices and anti-terrorism legislation
… is a suicide bomber on the London tube with a detonator in his hand waiting to go under a tunnel before detonating the bomb causing injures and deaths, police have a positive obligation to protect the lives of the people. The correct assumption that the police can make is that the suicide …
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Konstrukce přípravku na sloučení ručních operací při výrobě termostabilních rozbušek
Tato práce se zabývá problematikou výrobního přípravku potřebného ke sloučení ručních operací při výrobě termostabilních rozbušek. Cílem bylo navrhnout ergonomické, praktické a funkční zařízení, které nahradí stávající nevyhovující způsob výroby. Práce je zaměřena na popis a následné využití …