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430 Newest Publications in propellants, explosives, pyrotechnics

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Experimental Study and DEM Simulation of Micro–Macro Behavior of TATB Granules During Compaction Using X‐ray Tomography

17-Apr-2015 | Bin Dai, Wei‐bin Zhang, Lin‐gang Lan, Yong Tian, Propellants, Explosives, Pyrotechnics, 2015

Abstract In this study, a noninvasive experimental method and a discrete element method (DEM) model were used to investigate the micro–macro behavior of TATB granules including global deformations, contact forces, stress distributions, local coordination number, local pore ratio, particle ...

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Elasticity of Crystalline Molecular Explosives

14-Apr-2015 | Daniel E. Hooks, Kyle J. Ramos, C. A. Bolme, Marc J. Cawkwell, Propellants, Explosives, Pyrotechnics, 2015

Abstract Crystalline molecular explosives are key components of engineered explosive formulations. In precision applications a high degree of consistency and predictability is desired under a range of conditions to a variety of stimuli. Prediction of behaviors from mechanical response and ...

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Molecular Origin of the Influence of the Temperature on the Loss Factor of a Solid Propellant

25-Mar-2015 | Aurélie Azoug, Robert Nevière, Andrei Constantinescu, Propellants, Explosives, Pyrotechnics, 2015

Abstract This study focuses on the viscoelastic behavior of an industrial hydroxyl‐terminated polybutadiene (HTPB) based solid propellant. The analysis of the loss factor as function of temperature enables the investigation of the molecular mechanisms participating in the nonlinear ...

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Moisture Proofing of Spray Dried Particles Comprising Ammonium Nitrate/Potassium Nitrate/Polymer

25-Mar-2015 | Seiichiro Nagayama, Katsumi Katoh, Eiko Higashi, Masahiko Hayashi, Kosuke Kumagae, Hiroto Habu, Yuji Wada, Katsuyuki ..., Propellants, Explosives, Pyrotechnics, 2015

Abstract The aim of this study was to fabricate moisture‐proof, phase‐stabilized, ammonium nitrate/potassium nitrate (AN/PN) particles, with a polymer used as the moisture‐proofing agent. The particles were prepared with a spray drying technique. Water solutions (or water dispersions) ...

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Shock Tube Effect Inside a Pyrotechnic Igniter

20-Mar-2015 | Gavin A. Buttigieg, Gregory H. Paine, Ralph C. Hsiao, Propellants, Explosives, Pyrotechnics, 2015

Abstract An output closure is a critical component of a pyrotechnic igniter. It controls the heat transfer duration of initiation train, stress loading on the propellant grain, and the pressure drop during closure deployment. Normally the pressure profiles calculated by a quasi‐static interior ...

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Effects of Temperature and Strain Rate on the Dynamic Fracture Properties of HTPB Propellant

13-Mar-2015 | Bing Long, Xinlong Chang, Kuan Hu, Youhong Zhang, Propellants, Explosives, Pyrotechnics, 2015

Abstract In order to study the influence of temperature and strain‐rate on HTPB propellant fracture capability under impact loading conditions, a dynamic fracture experiment at different temperatures was carried out by using the cracked straight‐through Brazilian disc (CSTBD) specimen on the ...

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Theoretical Study on Equivalent Target of Ceramic Composite Armor

13-Mar-2015 | Xu‐Dong Zu, Zheng‐Xiang Huang, Qiang‐Qiang Xiao, Bei‐Bei Liu, Propellants, Explosives, Pyrotechnics, 2015

Abstract The theory of equivalent target was studied by considering the standoff curve and the penetration model of the horizontal velocity method to analyze the equivalent mechanism of spaced target equating ceramic composite armor. This theory can forecast the penetration ability of the ...

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The Development of a Confined Impact Test for Evaluating the Safety of Polymer‐Bonded Explosives During Warhead Penetration

13-Mar-2015 | Xiaogan Dai, Qian Huang, Fenglei Huang, Ming Li, Yushi Wen, Xuwang Liu, Propellants, Explosives, Pyrotechnics, 2015

Abstract During warhead penetration, which lasts several milliseconds, warheads undertake moderate pressures reaching hundreds of MPa. Previous methods have been unable to mimic such stimuli to evaluate the safety of ammunitions. Hence, new safety evaluation methods with moderate pressures and ...

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Interior Ballistics Two‐Phase Reactive Flow Model Applied to Small Caliber Projectile‐Gun System

13-Mar-2015 | Ahmed Bougamra, Huilin Lu, Propellants, Explosives, Pyrotechnics, 2015

Abstract Multi‐dimensional multi‐component two‐phase flow modeling of solid propellant combustion in weapons is the new trend of the interior ballistics codes. Most of these codes are designated to large caliber guns and rockets simulation. Only a small number of investigations on ...

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Nitrogen‐Rich Energetic 1,2,5‐Oxadiazole‐Tetrazole – Based Energetic Materials

11-Mar-2015 | Thomas M. Klapötke, Tomasz G. Witkowski, Propellants, Explosives, Pyrotechnics, 2015

Abstract Research for new energetic materials with tailored properties is of particular interest in many research groups. In order to meet challenging requirements heterocyclic systems have been investigated. One of the most promising area of research is synthesis of high nitrogen content ...

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