Results 31 to 40 of about 11,386 (216)
Diagnostic techniques in deflagration and detonation studies [PDF]
, 2015 Advances in experimental, high-speed techniques can be used to explore the processes occurring within energetic materials. This review describes techniques used to study a wide range of processes: hot-spot formation, ignition thresholds, deflagration ...
Field, JE +3 more
core +1 more source
ReaxFF reactive molecular dynamics on silicon pentaerythritol tetranitrate crystal validates the mechanism for the colossal sensitivity [PDF]
, 2014 Recently quantum mechanical (QM) calculations on a single Si-PETN (silicon-pentaerythritol tetranitrate) molecule were used to explain its colossal sensitivity observed experimentally in terms of a unique Liu carbon-silyl nitro-ester rearrangement (R_3Si–
Goddard, William A., III +4 more
core +2 more sources
Study of Optical Properties, Thermal Kinetic Decomposition and Stability of Coated PETN-Litholrubine nano-Composite via Solvent/None-Solvent Method Using Taguchi Experimental Design [PDF]
Journal of Optoelectronical Nanostructures, 2019 In this research, in order to coating PETN particles, nano-pigment of redlitholrubine B 57:1 (NLR) was used in a surfactant environment of cetyltrimethylammonium bromide (CTAB) using solvent/none-solvent (water-acetone) method. Afterstructural studies of
masoomeh Saberi Lamraski +2 more
doaj
Deep Underground Science and Engineering, EarlyView.This study investigates the blast‐induced rock damage patterns under different cut‐hole layouts and ground stress conditions through numerical simulations and field tests. The findings in this study provide valuable insights for similar underground engineering applications.
Junjie Zhao +5 more
wiley +1 more source
Propellants, Explosives, Pyrotechnics, EarlyView.This work presents an approach for predicting the drop‐weight impact sensitivity of pure molecular explosives directly from 2D molecular graphs using physics‐informed artificial intelligence (AI) models. A dataset comprising experimentally measured sensitivities for 625 unique high‐explosive molecules is augmented with physics‐informed synthetic ...
Grant Hutchings +4 more
wiley +1 more source
Reactive Molecular Dynamics Simulations of Shock Through a Single Crystal of Pentaerythritol Tetranitrate [PDF]
, 2009 Large-scale molecular dynamics simulations and the reactive force field ReaxFF were used to study shock-induced initiation in crystalline pentaerythritol tetranitrate (PETN). In the calculations, a PETN single crystal was impacted against a wall, driving
Budzien, Joanne +2 more
core
Linear scaling computation of the Fock matrix. IX. Parallel computation of the Coulomb matrix
, 2004 We present parallelization of a quantum-chemical tree-code [J. Chem. Phys. {\bf 106}, 5526 (1997)] for linear scaling computation of the Coulomb matrix. Equal time partition [J. Chem. Phys.
C. J. Tymczak +3 more
core +1 more source
Response of PETN Detonators to Elevated Temperatures.
Proposed for presentation at the 38th International Symposium on Combustion held January 24-29, 2021 in Adelaide, Australia, 2020 Abstract In the present study, commercially available detonators with pentaerythritol tetranitrate (PETN) were subjected to elevated temperatures. The detonators were thermally ignited over a range of heating rates to measure ignition delay time and assess detonator violence.
Stephanie A. Coronel +1 more
openaire +2 more sources
Characterization of Ultrafast Decomposition Dynamics in Nitrate Esters
Propellants, Explosives, Pyrotechnics, EarlyView.ABSTRACT Ignition of energetic materials initiates chemical reactions on atomic length scales within femtoseconds, making these reactions difficult to investigate experimentally. The technique of femtosecond time‐resolved mass spectrometry (FTRMS) can capture molecular rearrangement and bond‐breaking events in isolated molecules with sub‐50 femtosecond
Madison K. Minvielle +3 more
wiley +1 more source
Anisotropic constitutive relationships in energetic materials: PETN and HMX [PDF]
, 2007 This paper presents results of first-principles density functional calculations of the equation of state (EOS) of PETN-I and beta-HMX. The isotropic EOS for hydrostatic compression has been extended to include uniaxial compressions in the [100], [010 ...
Conroy, M. +3 more
core