Tag Archives: blast wave

Research on detonation parameters of low density emulsion explosives modified by microballoons

Research on detonation parameters of low density emulsion explosives modified by microballoons
MARANDA A., DROBYSZ B., PASZULA* J.

Please cite as: CHEMIK 2014, 68, 1, 17–22

The paper presents the results of selected detonation parameters of low density emulsion explosives. Microballoons made of plastic materials were used in the research as a factor of reducing the density. Obtained explosive mixture had a density below 0.6 g/cm3. We conducted the studies on the dependence of the detonation velocity and intensity of the blast wave from the microballoons content. Keywords: water-in-oil emulsion explosives, detonation velocity, blast wave

Read more in pdf

pdf-icon

...
Read more

Numerical modeling methods – numerical model and modeling results Measurement of blast wave in Held’s Method Research of ANFO cylindrical explosive charge detonation in air using modern numerical modeling methods

Numerical modeling methods – numerical model and modeling results Measurement of blast wave in Held’s Method Research of ANFO cylindrical explosive charge detonation in air using modern numerical modeling methods
MARANDA A., KOŚLIK P., HADZIK* J., WILK Z.

Please cite as: CHEMIK 2014, 68, 1, 9–16 This paper presents the results of saletrole cylindrical explosive charge detonation in the air, using Ansys LS-Dyna program. Results of numerical analyzes were referenced to the actual effects of detonation in proving ground researches. Simulation and experimental researches were performed for cylindrical charges having a diameter 45 mm and length 250 mm. Additionally the measurements of the blast wave intensity were conducted by using Held’s Method, and measurements of the blast wave overpressure in three characteristic directions relative to the charge are also discussed. Keywords: blast wave, ANFO, computer simulation, impulse density

Read more in pdf

pdf-icon

...
Read more

Assessing the parameters of blast waves in the air generated by the detonation of 4,4?,5,5?-tetranitro-2,2?- biimidazole dihydrate and 3,3?-diaminoazoxyfurazan (DAAF) SZALA M., LEWCZUK R., PASZULA J.

Mateusz SZALA, Rafał LEWCZUK, Józef PASZULA ? Division of New Technology and Chemistry, Military University of Technology, Warsaw Abstract: The paper presents the results of studies covering the assessment of blast waves generated in the air by the detonation of 4,4?,5,5?-tetranitro-2,2?-biimidazole dihydrate  (TNBI?2H2O) and 3,3?-diamino-4,4?-azoxyfurazan (DAAF). Both compounds used in the studies have been produced at the Department of Explosives of the Military  University of Technology. As the reference material 2,4,6-trinitrotoluene (TNT) and 1,3,5,7-tetranitro-1,3,5,7-tetraaza-cyklooctane (octogen) were used. It has been  experimentally proven that TNBI?2H2O generates burst waves with parameters similar to the waves generated by octogen (HMX). Please cite as: CHEMIK 2013, 67, 13, 41-46 Introduction Until recently ?explosives? were associated solely with broadly defined military applications. Because of the more and more common use of chemical compounds and mixtures capable of causing an explosive conversion in such lines as: coal mining and petroleum, automotive industry, metallurgy or construction, the knowledge of the applications of high energy compounds becomes more and more widespread. Recently, the...
Read more