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.
Results
Showing 1 to 11 of 11 for “"Shaped Charge"”.
-
Experimental testing of bimetallic and reactive shaped charge liners
A series of 13 shaped charge tests was conducted. The primary objectives were to investigate small scale bimetallic and reactive liners and to record the target deformation characteristics of larger scale reactive liners. Tests 1 - 9 used liners of 20.02 mm diameter and were conducted in either a …
-
Penetration in granite by shaped charge liners of various metals
… in Missouri red granite by cylindrical charges with metal liners of aluminum 2011 (T-3), aluminum 7075 (T-6), yellow brass, monel, maraging steel (vascomax 250), and copper was measured. Metals having high ductility and moderate compressive strength penetrated deeper than high strength …
-
Simulation of micro-shaped charge experiments and analysis of shock states for a hyper-elastic solid
This thesis focuses on shaped charge simulations using a hydro-code called ALE3D. It gives background on shaped charge research and motivation for the project itself along with information on a shaped charge experiment that took place at the University of Illinois Urbana Champaign. A baseline …
-
Further experimental investigations of underwater reactive shaped charge liners and aluminum particle combustion during hypervelocity water impact and penetration
… was to continue the investigation of reactive shaped charges. Although significant chemical energy is available in the form of combustion, the coupling of this energy to the target depends critically on the rate and position of energy deposition. Since this information is vital to forecasting …
-
Experimental observations of aluminum particle combustion during hypervelocity water impact and penetration
… have investigated the reaction between Al shaped charge jets and underwater environments. Although many qualitative and semi-quantitative characteristics are known, including pressure field augmentation, light emission from combusting material, and oxide-containing powder residues, the …
-
The use of shaped explosive charges to investigate permeability, penetration, and fracture formation in coal, dolomite and plexiglas
… rate are currently being developed. The use of shaped charges to initiate fractures in coal and increase the gas flow rate was the object of this research. The three areas of investigation were: 1) permeability changes in coal models after fracturing with shaped charge jets, 2) fracture …
-
Parallel algorithms applied to problems in two dimensional detonation shock dynamics
… system was built to generate optimal, shaped charge geometries using Detonation Shock Dynamics. The idea was to use IPC-DSD2D to estimate the shock pressure along a shaped charge liner and the normal shock velocity at the apex of the liner. These flow variables were then to be used as …
-
Investigation of enhanced aluminum casings for underwater explosives and development of spectroscopic techniques for measuring temperature in environments relevant to underwater ordnance
… analysis utilized aluminum cylinders with linear shaped charges embedded on the surface. The cavities produced jets which outperformed the regions on the cylinder without cavities in terms of enhanced radial bubble growth. It was also shown that cavities with sharp angles at the apex performed …
-
Investigating detonation fronts in small explosive charges using a wave shaper
… Wave shapers have been used for decades in shaped charge applications in larger warheads, but this current research has miniaturized the design to very small charges (8 mm in diameter and 5-6 mm long). The smaller the charge, the more significant effects like corner turning and critical (or …
-
Enhanced combined effects in aluminized explosives by an innovative initiation system
… amplifies detonation pressure and resultant shaped charge jet velocity, responsible for effective energy increase and providing opportunities for achieving the combined effects of blast and directed energy. Attention is focused towards the use of aluminized explosives because of their blast …
-
Constitutive equations for granular materials : application to dry sand and powder metal
… metallurgy industry to form net- or near-net-shaped components with high relative density by cold compaction. A new constitutive model for cold compaction of metal powders has been developed. The plastic flow of metal powders at the macroscopic level is assumed to be representable as a …