Spectral Emission Signatures from Cased High Explosive Charges

2021 ◽  
pp. 000370282110426
Author(s):  
Austin Butler ◽  
David Amondson ◽  
Herman Krier ◽  
Nick Glumac
Keyword(s):  
High Explosive ◽  
Atomic Emission ◽  
Combustion Products ◽  
Alloying Elements ◽  
Titanium Monoxide ◽  
Molecular Features ◽  
Explosive Charges ◽  
Spectroscopic Signatures ◽  
Nm Range ◽  
Alloy Titanium

Spectroscopic signatures of cased high-explosive charge denotations are examined using emission spectroscopy with sub nanometer resolution. Eleven distinct case materials are investigated for atomic features of their major alloying elements. Molecular features of case material combustion products are also investigated for five case materials. Emission is monitored within the 275–425 nm range for atomic features and in the 310–755 nm range for molecular features. Major alloying elements with concentrations greater than 5% are generally detected through atomic emission. Al, Cu, Fe, Mg, Cr, Mn, Pb, and Ni are all detected in concentrations less than 5%. Undetected elements include Zn, Nb, Ta, and V. Molecular emission from aluminum monoxide, titanium monoxide, and CN is measured for aluminum alloy, titanium alloy, and carbon fiber cases, respectively.

Compression of metal powders by flat high explosive charges part II

1973 ◽  
Vol 12 (11) ◽  
pp. 880-882
Author(s):  
A. P. Bogdanov ◽  
A. S. Lazarev ◽  
O. V. Roman ◽  
V. Ya. Furs
Keyword(s):  
High Explosive ◽  
Metal Powders ◽  
Explosive Charges

Cratering from High Explosive Charges. Analysis of Crater Data

1961 ◽  
Author(s):  
J. N. Strange ◽  
C. W. Denzel ◽  
T. I. McLane ◽  
III
Keyword(s):  
High Explosive ◽  
Explosive Charges

Impulsive Forming of Shell Structures With Apertures

2003 ◽  
Author(s):  
V. Sabelkin
Keyword(s):  
Dynamic Response ◽  
High Explosive ◽  
Impulsive Loading ◽  
Shell Structures ◽  
Plastic Properties ◽  
Aperture Diameter ◽  
Jet Engine ◽  
Explosive Charges ◽  
Explosive Forming ◽  
Static And Dynamic Loading

Different modern shell structures are exposed to impulsive loading very often. Some of them may have different imperfections such as apertures, welds, and irregular thickness. These structures can be made by static or impulsive loading. To know fractureless dynamic response of shell structures with apertures is important in many cases, especially for forming processes, because of the first appeared fracture can extend through a shell blank especially if material is brittle with low plastic properties. The tooling for impact and static loading of flat and shell structures was developed. Dynamic response of shell structures with unsupported apertures on internal impulsive loading by point high explosive charges is described. Strain state of shaped shell structures with apertures after explosive forming is shown. The limit aperture diameter for dynamic fractureless response is determined. Distributions of strain intensities on a sample cross section for different aperture diameters, static and dynamic loading are shown. Different jet engine parts were made using developed technology.

scholarly journals Modeling of Cooling and Solidification of TNT based Cast High Explosive Charges

2014 ◽  
Vol 64 (4) ◽  
pp. 339-343 ◽  
Author(s):  
A. Srinivas Kumar ◽  
V. Dharma Rao
Keyword(s):  
High Explosive ◽  
Explosive Charges

Filling the Gap between Hypervelocity and Low Velocity Impacts

2019 ◽  
Author(s):  
Werner Arnold ◽  
Thomas Hartmann ◽  
Ernst Rottenkolber
Keyword(s):  
High Explosive ◽  
Hypervelocity Impact ◽  
Shaped Charge ◽  
Low Velocity ◽  
Projectile Velocity ◽  
Critical Stimulus ◽  
Velocity Impact ◽  
Hypervelocity Impacts ◽  
Explosive Charges ◽  
Shaped Charge Jet

Abstract During more than one decade of studying initiation phenomenology numerous papers at the previous HVIS and other symposia ([1] - [12]) were published. Most of them dealt with the hypervelocity impact initiation of plastic bonded high explosive charges by shaped charge jets (SCJ) and a few ones reported results in the ordnance velocity impact regime with STANAG projectiles and explosively formed projectiles (EFP) ([2] & [11]). A recent finding of our investigations of shaped charge jet (SCJ) attacks suggests that the critical stimulus S = v2∙d (v = SCJ / projectile velocity; d = SCJ / projectile diameter) for the initiation of a munition can no longer be seen as a constant (S ≠ const.) ([11] & [10]). Also, known equations, e.g. Jacobs-Roslund [13], are not capable to describe low velocity and hypervelocity impacts with the same parameter set.

CRATERING FROM HIGH EXPLOSIVE CHARGES. COMPENDIUM OF CRATER DATA

1960 ◽  
Author(s):  
R. A. SAGER ◽  
C. W. DENZEL ◽  
W. B. TIFFANY
Keyword(s):  
High Explosive ◽  
Explosive Charges

Study and Development of the Components of Gas Generator Compositions Based on the Ammonium Nitrate to Improve Blasting Operations Safety

2021 ◽  
pp. 47-52
Author(s):  
D.A. Bayseytov ◽  
◽  
M.I. Tulepov ◽  
Zh.A. Amir ◽  
A.Ye. Orazbayev ◽  
...  
Keyword(s):  
Ammonium Nitrate ◽  
Aluminum Powder ◽  
High Explosive ◽  
Low Cost ◽  
Combustion Products ◽  
Gas Generator ◽  
Toxic Gases ◽  
Carbon Black Powder ◽  
Urgent Task ◽  
Low Sensitivity

The article is devoted to the study and development of the components of gas generator compositions based on the ammonium nitrate to improve safety of blasting operations. This is primarily due to the low cost of ammonium nitrate, low sensitivity to mechanical and detonation effects and a significantly lower content of harmful compounds in the combustion products compared to the analogues. PA-4 aluminum powder was used as fuel, carbon black powder — as a gas-forming agent. The effect was studied concerning different amounts of aluminum powder on the combustion characteristics of a gas generator composition based on the ammonium nitrate. Calculated and experimental data showed that it is unreasonable to introduce more than 5 % of aluminum into the composition. According to the results of the conducted study, a gas generator composition based on the ammonium nitrate was developed to increase blasting operations efficiency and safety. Laboratory and polygon studies confirmed the efficiency and safety of using gas generator compositions at the destruction of stone. Destruction of the stone occurred without scattering of individual fragments, formation, and propagation of an air shock wave. Thus, the urgent task is to ensure blasting operations safety using gas generator compositions, which will allow to eliminate the formation of harmful, toxic gases and the high explosive effect.

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