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 8 of 8 for “"flyer plates"”.
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Reactive solids under shock compression
… an apparatus to launch and monitor laser-driven flyer-plates was developed. This was coupled to a home built photonic Doppler velocimeter (PDV) which tracks the motion of flyer plates and embedded gauges. This system was characterized using PDV to determine the range of impact velocities and …
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Shock initiation of explosives under the microscope
… of solid state explosives by thin, laser-driven flyer plates. These flyer plates consist of aluminum foils, typically 25 – 75 μm thick, which are launched using a Nd:YAG laser with a 20 ns pulse width in a technique developed within the Dlott group. A full description of the novel instrumentation …
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New technologies for spectroscopy of materials under static and shock compression
… film was shocked using simplified laser-driven flyer plates, also described here. The local dynamics were probed using fluorescence emission of the dye, and the global dynamics were probed with a photon Doppler velocimeter. The results indicated that within the 8-15 ns duration of the imparted …
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Verification and Validation of Magnetohydrodynamics Simulations of Electrically Exploded Conductors
Dense Z-pinches, magnetically-driven flyer plates, and electrically exploded wires and foils all take advantage of the extreme Lorentz forces and/or Ohmic heating generated by intense electrical current pulses through an initially solid conductor. Magnetohydrodynamics (MHD) simulations are used to …
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Performance of the UBC two-stage light-gas gun
… front of the projectile is a metal disk - the flyer plate. In a typical experiment, the behaviour of the target material under the high pressure conditions that result from the impact between the flyer plate and the target is examined. In this study, the use of gun powder loads of 46 to 150 g, …
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Characterization framework to develop ball-milled thermites as additives to polymer-bound explosives
… tabletop setup uses laser-launched hypervelocity flyer plates to shock-compress isolated particles suspended in transparent polymer wells. The fast, nanosecond-timescale onset of shear-driven reactions, observable as hot spots forming within the first ~50 ns after impact, was tracked optically …
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Theory and modeling of laser-driven flyer plate experiments to study explosives under a microscope
… and simulating microscopic size, laser-driven flyer impact experiments at 0.5 – 4.5 km/s, (2) identify and develop effective material models for inert and reactive materials, and (3) utilize this framework to present deeper understanding of reactive behavior for a classical reactive material, …
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Shock compressing liquids on a tabletop microscope, with special focus on detonating nitromethane
… using a spatially homogenized laser to launch flyer plates, 0.5 mm diameter, 18 – 37 µm thick disks of Al-1100 at velocities up to 4.5 km/s. Upon impact the flyer transmits a shock wave into the desired sample. A full description of the new sample array designed to contain microliters of liquid …