Topic
Brisance
About: Brisance is a research topic. Over the lifetime, 81 publications have been published within this topic receiving 603 citations.
Papers published on a yearly basis
Papers
Book•
12 Oct 1995
TL;DR: In this article, the authors proposed a method for determining the starting strength of high explosive charges and their sensitivity to high explosive charge impacts, including the sensitivity of high explosives to electric spark.
Abstract: 1. General Concepts and Classification of Explosives.- 1.1. Safety Precautions in Handling Explosives.- 1.2. Initiating Devices.- 1.2.1. Initiation of High Explosive Charges.- 2. Sensitivity of Explosives.- 2.1. Determination of the Heat Sensitivity of Explosives.- 2.2. Determination of the Sensitivity of Explosives to Electric Spark.- 2.3. Determination of the Adiabatic Sensitivity of Explosives.- 2.4. Sensitivity of Explosives to Mechanical Stimuli.- 2.4.1. Determination of Impact Sensitivity.- 2.4.2. Determination of Friction Sensitivity.- 2.4.3. Determination of the Sensitivity to Fragment Impact.- 2.4.4. Determination of Impact Vulnerability.- 2.5. Determination of the Initiating Strength of Primary Explosives.- 2.6. Determination of the Sensitivity of High Explosives to Detonators.- 2.7. Shock Wave Initiation of Detonation.- 2.7.1. Wedge Test for Determination of the Shock Wave Initiation Sensitivity.- 2.7.2. Gap Test for Determination of the Shock Wave Initiation Sensitivity.- 2.7.3. Determination of the Transmission of Detonation in Open Air.- 2.7.4. Determination of the Transmission of Detonation in Confinement.- 2.7.5. Determination of the Transmission of Detonation on a Free Surface.- 2.8. Determination of Blasting and Technical Characteristics of Detonators.- 2.8.1. Determination of the Sensitivity of Flash Detonators to Open Flame.- 2.8.2. Determination of the Sensitivity of Stab Detonators to the Firing Pin.- 2.8.3. Lead Block Test for Determination of the Initiating Strength of Detonators.- 2.8.4. Lead Plate Test for Determination of the Initiating Strength of Detonators.- 2.8.5. Copper Crusher Compression Test for Determination of the Initiating Strength of Detonators.- 2.8.6. The Sevran Method for Determination of the Initiating.- Strength of Detonators.- 2.8.7. Haid's Method for Determination of the Initiating Strength of Detonators.- 2.9. Determination of the Initiating Strength of Boosters.- 3. Combustion of Explosives.- 3.1. Determination of the Combustion Pressure at Constant Volume Conditions.- 3.2. Determination of the Composition and the Volume of Combustion Products.- 3.3. Determination of the Combustion Rate of Propellants at Constant Pressure Conditions.- 3.4. Determination of the Heat of Combustion of Explosives.- 4. Detonation.- 4.1. Determination of the Detonation Velocity.- 4.1.1. The Dautriche Method for Determination of the Detonation Velocity.- 4.1.2. Determination of the Detonation Velocity by Optical Methods.- 4.1.3. Determination of the Detonation Velocity Using Electronic Counter and Velocity Probes Technique.- 4.1.4. Determination of the Detonation Velocity Using Oscilloscope and Velocity Probes Technique.- 4.1.5. Determination of the Detonation Velocity Using Probe for Continuous Determination of Detonation Velocity and Oscilloscope Technique.- 4.1.6. Determination of the Detonation Velocity Using Optical Fibres as Velocity Probes.- 4.2. Determination of the Detonation Wave Parameters.- 4.2.1. Flying Plate Test for Determination of the Detonation Parameters.- 4.2.2. The Aquarium Test for Determination of the Detonation Parameters.- 4.2.3. Determination of the Detonation Parameters Using the Laser Technique.- 4.2.4. Determination of the Detonation Parameters Using Electromagnetic Particle Velocity Gauge Technique.- 4.2.5. Determination of the Detonation Wave Parameters Using Flash X-Ray Photography.- 4.2.6. Determination of the Detonation Pressure Using a Manganin Pressure Gauge.- 4.2.7. Determination of the Detonation Pressure Using a Polyvinylfluoride-Based Pressure Gauge.- 4.2.8. Determination of the Detonation Parameters by the Laser Interferometry Technique.- 4.3. Determination of the Detonation Temperature.- 4.3.1. Determination of Detonation Temperature Using a Two-Colour Optical Fibre Pyrometer.- 4.4. Determination of the Composition of Detonation Products.- 5. Working Capacity of Explosives.- 5.1. Lead Block Test for Determination of the Strength of Explosives.- 5.2. Determination of Explosive Strength Using the Ballistic Mortar.- 5.3. Determination of Explosive Strength by Underwater Detonation.- 5.4. Determination of Explosive Performances by the Double Pipe Test.- 5.5. Determination of the Parameters of Explosive Effects from the Cylinder Expansion Test.- 5.6. Determination of the Brisance by the Hess Test.- 5.7. Determination of the Brisance by Kast's Method.- 5.8. Determination of the Brisance by the Plate-Denting Test.- 5.9. Determination of the Shock Wave Parameters.- 5.9.1. Determination of the Shock Wave Pressure.- 5.9.2. Determination of the Shock Wave Velocity.- References.
159 citations
TL;DR: In this paper, several cast-cured plastic bonded explosives (PBXs) based on cyclic nitramines bonded by a polyurethane matrix have been prepared and studied.
Abstract: Several cast-cured plastic bonded explosives (PBXs) based on cyclic nitramines bonded by a polyurethane matrix have been prepared and studied. The nitramines were ε-CL20 (ε-2,4,6,8,10,12-hexanitro-2,4,6,8,10,12hexaazaisowurtzitane, ε-HNIW), BCHMX (bicyclo-HMX, cis-1,3,4,6tetranitro-octahydroimidazo-[4,5-d]imidazole), RDX (1,3,5-trinitro-1,3,5triazacyclohexane) and HMX (1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane). The detonation velocities were measured experimentally. The brisance of the prepared compositions was determined by the Kast method. The penetration performance of shaped charges filled with the prepared compositions was measured experimentally. The detonation parameters of the studied compositions and the individual explosives were calculated using the EXPLO5 thermodynamic code. It was concluded that CL20-HTPB has the highest detonation characteristics and performance of all of the prepared PBXs. BCHMX-HTPB is an interesting PBX with performance and detonation characteristics higher than those of RDX-HTPB. A linear relationship between the detonation pressures of the prepared PBXs and their performances in terms of the explosive brisance was observed; while the penetration depths formed by the shaped charge jets depended on the Gurney velocity of the studied PBXs samples.
39 citations
TL;DR: In this paper, the reaction mechanism of detonation of composite emulsion explosives sensitized by MgH2, which simultaneously plays the role of an energetic material, is presented.
Abstract: Preliminarily results on the reaction mechanism of detonation of composite emulsion explosives sensitized by MgH2, which simultaneously plays the role of an energetic material, are presented. Compared to emulsion explosives sensitized by glass microspheres, emulsion explosives sensitized by magnesium hydride have a different reaction mechanism of detonation. The shock wave overpressure, specific impulse, shock wave energy, and bubble energy are all greatly increased with the use of MgH2, and it is noticeable that the shock wave overpressure and shock wave energy increase by 17% and 24%, respectively. In addition, emulsion explosives sensitized by MgH2 improve significantly in terms of detonation velocity and brisance. These emulsion explosives also meet safety requirements.
39 citations
TL;DR: In this article, a new type of emulsion explosives with TiH2 powders was developed to improve the detonation performance and the effect of the amount of sensitizers GMs and energetic additives TiH 2 on explosion characteristics.
Abstract: In order to improve the detonation performance of emulsion explosives, a new type of emulsion explosives with TiH2 powders is developed. The influences of the amount of sensitizers GMs and energetic additives TiH2 on explosion characteristics of emulsion explosives are studied to determine the optimum compositions. Underwater explosion and brisance testing experiments show that, compared to traditional GMs sensitized emulsion explosives, the shock wave specific impulse I and total energy E of GMs-TiH2 sensitized emulsion explosives are improved significantly, and the effect of TiH2 powders on improving the explosion power of emulsion explosives is better than that of Ti powders. The brisance of GMs-TiH2 emulsion explosives is 23.80 mm compression of lead block, 7.7 mm more than that of the emulsion explosives sensitized by GMs alone. Therefore, the hydrogen containing material TiH2 could be a promising energetic additive for developing high-power emulsion explosives.
32 citations
Journal Article•
TL;DR: In this paper, a new melt cast composition based on BCHMX/TNT (60/40 by wt.) was prepared and the detonation velocities were measured experimentally.
Abstract: cis-1,3,4,6-Tetranitrooctahydroimidazo-[4,5 d]imidazole (BCHMX) is a new bicyclic nitramine which has been prepared using a two-stage synthetic method. In this work, a new melt cast composition based on BCHMX/TNT (60/40 by wt.) was prepared. For comparison purposes, Composition B based on RDX (1,3,5-trinitro1,3,5-triazacyclohexane)/TNT (60/40 by wt.), and HMX (1,3,5,7-tetranitro-1,3,5,7tetraazacyclooctane)/TNT (60/40 by wt.) were also studied. Impact and friction sensitivities of these compositions and of the individual explosives were determined. The detonation velocities were measured experimentally. The performance of the compositions prepared was studied by measuring the brisance using the Kast method. The detonation parameters of the compositions and the individual explosives were calculated using the EXPLO5 thermodynamic code. The results show that mixing these nitramines with TNT decreases their sensitivities. BCHMX/TNT is more sensitive to impact and friction than Composition B while it has higher detonation parameters, at the same level as HMX/TNT. In comparison, BCHMX/TNT has the highest relative brisance of the compositions studied. It is postulated that the higher performance characteristics of BCHMX and compositions based on it, in comparison with those of HMX, are due to a higher positive heat of formation for this nitramine.
24 citations
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| Year | Papers |
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| 2021 | 1 |
| 2020 | 1 |
| 2019 | 2 |
| 2018 | 5 |
| 2017 | 8 |
| 2016 | 7 |