Flyer plate impact

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August undefined, 2024

Weblaunch of 0.5-4.5 km/s laser-driven metal flyer plates and the impact with stationary targets of Pyrex and fused silica glasses, and Lexan and Plexiglas polymers, producing pressures in the target ... WebIn this paper we present a newly developed one-dimensional hydrodynamic simulation code and use it to determine the shock evolution in flyer plate impact experiments. The code is Lagrangian with artificial viscosity and uses shock Hugoniot data in its equation-of-state calculations instead of SESAME data tables.

Indirect ignition of energetic materials with laser-driven flyer plates

WebThe impact of laser-driven flyer plates on energetic materials CL-20, PETN, and TATB has been investigated. Flyer plates composed of 25 μm thick Al were impacted into the energetic materials at velocities up to 1.3 km/s. The flyer plates were accelerated by means of an Nd:YAG laser pulse. The laser pulse generates rapidly expanding plasma between … WebMar 23, 2024 · High velocity impact of flyers on target plates produces shockwaves associated with high strain rate (>10 6 /s). The shockwave travels in opposite directions into the flyer and the target plate and upon reaching the free surface at both the ends, reflect as the rarefactions. These rarefactions travel towards each other and meet to cause a zone ... circulatory system grade 8 worksheets pdf

A Novel Fluid Structure Interaction Experiment to Investigate ...

WebDec 1, 2006 · As an example, the flyer-plate impact test is based on generating a shockwave in the material being tested by impacting a plate made from an unknown material with another plate made from a ... WebJun 1, 2013 · The schematic of the t–X (time vs. distance) diagram, which illustrates the propagation of compression and tensile waves through the target and flyer plates during … WebMay 18, 2024 · We present a computational approach using a multimaterial, arbitrary Lagrangian–Eulerian code termed ALE3D to model the nanosecond/micrometer dynamics of the launch of 0.5–4.5 km/s laser-driven metal flyer plates and the impact with stationary targets of Pyrex and fused silica glasses, and Lexan and Plexiglas polymers, producing … diamond head photography

Simulation of shock waves in flyer plate impact experiments

Note: Heated flyer-plate impact system - PubMed

WebIn this paper we present a newly developed one-dimensional hydrodynamic simulation code and use it to determine the shock evolution in flyer plate impact experiments. The code … WebA technique for launching heated flyer plates was developed on a single-stage gas gun. This type of impact creates a well-posed mechanical state and a tunable thermal state, … circulatory system grade 4WebJun 19, 2000 · Charges of pentaerythritol tetranitrate (PETN) were impacted by laser-driven flyer plates launched from substrate backed aluminum films. The flyers were produced by single pulses from a Q-switched Nd:YAG laser. The aluminum flyers were between 3 and 5 μm thick, had diameters of 1 mm, and achieved velocities up to 8 km s−1. The stresses … diamond head pickleball

"WebJun 8, 2024 · Initial STEM analysis of the samples found that the flyer plate impact at 2.4 km/s resulted in the formation of microbands roughly 1 μm from the impact surface, as shown in Fig. 3 (a high magnification of supplementary material Fig. S2), while the majority of the remaining microstructure is unaffected by the pressure generated during impact ... " - Flyer plate impact

Flyer plate impact

$Spall fracture in aluminum bicrystals: Molecular dynamics study$

WebThe sabot design (Fig. 7.34) was optimized to minimize heat transfer from the heated flyer plate to the sabot body with the introduction of an insulator tube. The flyer plate of the material under study was launched against a fixed Inconel plate in normal impact experiments [58]. A WC plate was used for pressure-shear experiments [60]. WebWe present a computational approach using a multimaterial, arbitrary Lagrangian-Eulerian code termed ALE3D to model the nanosecond/micrometer dynamics of the launch of 0.5-4.5 km/s laser-driven metal flyer plates and the impact with stationary targets of Pyrex and fused silica glasses, and Lexan and Plexiglas polymers, producing pressures in the …

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WebWe investigated the launch and target impact of laser-driven Al flyer plates using photon Doppler velocimetry (PDV). We studied different flyer designs launched by laser pulses of different energies, pulse durations and beam diameters, that produced km s-1 impacts with transparent target materials. Laser-launching Al flyers 25-100 μm thick cemented to … WebJan 20, 2024 · The impact of laser-driven flyer plates on energetic materials CL-20, PETN, and TATB has been investigated. Flyer plates composed of 25 μm thick Al were impacted into the energetic materials at ...

WebJun 1, 2024 · In this study, a miniaturized exploding foil initiator, based on high pulsed electrical power generator, was designed to launch a micro Kapton ® flyer for impact initiation of a high explosive in order to understand its performance characteristics. Here, the explosive substance was replaced with a witness plate because the flyer poses various ... WebMay 18, 2024 · We present a computational approach using a multimaterial, arbitrary Lagrangian–Eulerian code termed ALE3D to model the nanosecond/micrometer …

WebThis report describes the details of a series of plate impact experiments that were conducted on a gas gun in an effort to validate a new technique for plate impact using … WebOct 14, 2010 · Fig. 1. (Color online) Schematic flyer impact experiment. A flyer plate moving with constant velocity impacts upon a target at rest. Initially two shock waves are …

WebAug 1, 2024 · They found that when the standoff distance, impact velocity and discharge energy was 0.4 mm, 116.83 m/s, and 2.5 kJ, respectively, the successful crimping was achieved. ... When the flyer plate collides with the parent plate, the distance between the maximum deformation area and the coil reaches 5 mm, and the Lorentz force continues …

WebWe investigated the launch and target impact of laser-driven Al flyer plates using photon Doppler velocimetry (PDV). We studied different flyer designs launched by laser pulses … diamond head picturesWebApr 11, 2024 · Flyer plate impact experiments (spallation and recovery) are conducted on a 3-m long, 14-mm bore diameter, single-stage gas gun. The schematic experimental setup is shown in Fig. 2. Both the flyer plate (6) and the target/sample (7) are made of the same solution-treated hot-rolled IN718 alloy, and their thicknesses are 1 mm and 2 mm, … diamondhead pictureWebJan 29, 2024 · 107s-1 is to perform shear plate impact experiments.5‒7 In a general plate impact experiment, a gas gun launches a plate projectile towards a thin, circular … diamond head pictures hawaiiWebNov 21, 2024 · At t = 0, the sample/flyer plate are initially unstressed and traveling at a speed, $ {V_P}_o $, the projectile velocity, while the target plate is unstressed and at rest. Post-impact, the normal component of stress/particle velocity in the sample and plates is described by the S-V diagram on the top right; the transverse component is shown ... diamond head photos hawaiiWebJan 1, 2015 · This paper compares the sensitivities of different modeling approaches for fundamental flyer plate impact experiments to variations of several input parameters. … diamondhead pine courseWebThe flyer plate may impact the target plate at normal incidence, resulting in what is called a normal plate impact experiment. An oblique plate impact experiment consists of an … diamond head pill boxWebFlyer Plate; Linear Velocity Profile; ... Theoretical analysis of a pulsed-laser-driven hypervelocity flyer launcher.Internal. J. Impact Engng. 14439–449. CrossRef Google Scholar Lee, E.L. and Pfeifer, H. (1969). Velocities of fragments from exploding metal cylinders. Lawrence Livermore National Laboratory Report UCRL 50545, January. diamond head piece