scholarly journals Shock response of single crystal and nanocrystalline pentaerythritol tetranitrate: Implications to hotspot formation in energetic materials

2013 ◽  
Vol 139 (16) ◽  
pp. 164704 ◽  
Author(s):  
Y. Cai ◽  
F. P. Zhao ◽  
Q. An ◽  
H. A. Wu ◽  
W. A. Goddard ◽  
...  
Keyword(s):  
Single Crystal ◽  
Energetic Materials ◽  
Pentaerythritol Tetranitrate ◽  
Shock Response

Instrumentation on Impact Shock Study of Polymers and Possibility of Non-Equilibrium Shock Hugoniot

2010 ◽  
Vol 638-642 ◽  
pp. 1059-1064
Author(s):  
Kunihito Nagayama ◽  
Yasuhito Mori
Keyword(s):  
Carbon Fiber ◽  
Velocity Profile ◽  
Dynamic Response ◽  
Particle Velocity ◽  
Energetic Materials ◽  
Polymer Materials ◽  
Space Applications ◽  
Shock Response ◽  
Shock Hugoniot ◽  
Relaxation Structure

Polymer materials have widespread applications in various situations for structural materials by themselves as well as by combining with other materials such as carbon fiber. Some of them are also candidates for energetic materials in space applications.[1] Due to their general use, shock response of them has attracted attention for many researchers.[2-4] One of the striking characteristics of the dynamic response of them is that stress and/or particle velocity profile has a relaxation structure of s range.[5, 6]

Laser Initiation of Energetic Materials: Selective Photoinitiation Regime in Pentaerythritol Tetranitrate

2011 ◽  
Vol 115 (14) ◽  
pp. 6893-6901 ◽  
Author(s):  
Edward D. Aluker ◽  
Alexander G. Krechetov ◽  
Anatoliy Y. Mitrofanov ◽  
Denis R. Nurmukhametov ◽  
Maija M. Kuklja
Keyword(s):  
Energetic Materials ◽  
Laser Initiation ◽  
Pentaerythritol Tetranitrate

Overview: High Speed Dynamics and Modelling as It Applies to Energetic Solids

1992 ◽  
Vol 296 ◽  
Author(s):  
J. Covino ◽  
S. A. Finnegan ◽  
O. E. R Heimdahl ◽  
A. J. Lindfors ◽  
J. K. Pringle
Keyword(s):  
Energetic Materials ◽  
High Speed ◽  
Shock Loading ◽  
Dynamic Deformation ◽  
Two Dimensional ◽  
State Data ◽  
Impact Modelling ◽  
Shock Response ◽  
Hazard Assessments ◽  
Reaction Thresholds

AbstractThis paper discusses experimental techniques and modelling tools used to characterize energetic solids subjected to dynamic deformation and shock. Critical experiments have been designed to study shock response and impact sensitivity of energetic materials. For example, a simplified two dimensional experiment has been developed to study the critical phenomena involved in delayed detonation reactions (XDT). In addition, wedge tests are used to obtain equation-of-state data. Coupled with hydrocodes, these experiments give us an in-depth understanding of the response of energetic materials subjected to shock loading. A coupled methodology using both experimental and modelling tools is presented. Consisting of three parts, it addresses all possible responses to fragment impact. The three parts are: (1) Fragment impact modelling (hydrocodes and empirically based codes); (2) Experiments to obtain accurate data for predicting prompt detonation; and (3) Tests with planar rocket motor models to explore mechanisms related to bum reaction thresholds and degree of violence. This methodology is currently being used in weapon design and munitions hazard assessments.

Patterning PETN and HMX using Dip Pen Nanolithography

2005 ◽  
Vol 896 ◽  
Author(s):  
Omkar Nafday ◽  
Brandon Weeks ◽  
Jason Haaheim ◽  
Ray Eby
Keyword(s):  
Surface Energy ◽  
Scanning Probe Microscopy ◽  
Convenient Method ◽  
Energetic Materials ◽  
Scanning Probe ◽  
Pentaerythritol Tetranitrate ◽  
High Explosives ◽  
Shock Initiation ◽  
Effect Of Surface ◽  
Dip Pen Nanolithography

AbstractRecently there has been a focused effort to develop reliable nanoscopic writing and reading capabilities. Dip-pen nanolithography (DPN) has emerged as a convenient method to deliver nanoscale materials onto a substrate by leveraging scanning probe microscopy capability. A new application for the DPN method is the field of microdetonics which is the microscale decomposition and study of reactions of explosives. Results are presented for patterning pentaerythritol tetranitrate (PETN) and cyclotetramethylene tetranitramine (HMX) on silicon and mica substrates. The ultimate goal is to pattern both energetic materials in nanoscale registry and investigate their reaction and decomposition at the nanoscale due to heating or shock initiation. In addition to patterning of high explosives, a discussion on the effect of surface energy on patterning rates is investigated. This knowledge will be applicable to inks beyond high explosives.

Shock response of He bubbles in single crystal Cu

2014 ◽  
Vol 116 (21) ◽  
pp. 213506 ◽  
Author(s):  
B. Li ◽  
L. Wang ◽  
J. C. E ◽  
H. H. Ma ◽  
S. N. Luo
Keyword(s):  
Single Crystal ◽  
Shock Response

Shock response of pentaerythritol tetranitrate single crystals

1991 ◽  
Vol 70 (7) ◽  
pp. 3572-3587 ◽  
Author(s):  
J. J. Dick ◽  
R. N. Mulford ◽  
W. J. Spencer ◽  
D. R. Pettit ◽  
E. Garcia ◽  
...  
Keyword(s):  
Single Crystals ◽  
Pentaerythritol Tetranitrate ◽  
Shock Response

Crystal growth of organic energetic materials: pentaerythritol tetranitrate

2012 ◽  
Vol 2 (3) ◽  
Author(s):  
Gengxin Zhang ◽  
Brandon Weeks ◽  
Xin Zhang
Keyword(s):  
Crystal Structure ◽  
Thermal Stability ◽  
Crystal Growth ◽  
Energetic Materials ◽  
Strong Dependence ◽  
Energy Output ◽  
Deposition Flux ◽  
Strong Impact ◽  
Layer By Layer ◽  
Pentaerythritol Tetranitrate

AbstractThe energy output performance and thermal stability of organic energetic materials have a strong dependence on the porosity, particle morphology, and micro-scale crystal structure. This paper reviews the growth habit of pure pentaerythritol tetranitrate (PETN) crystals and the effect of metal impurities on microcrystal morphology of PETN films. The pure crystal growth shows that PETN molecules diffuse on the surface and nucleate in a two-dimensional layer-by-layer fashion; the final structure is controlled by the deposition flux. Also, the effect of metal cation impurities has a strong impact on the thermal stability and crystal structure, and is dependent on the doping level.

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