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Inside Cover: Impact of Void Structure on Initiation Sensitivity (Prop., Explos., Pyrotech. 2/2020)
Author(s) -
Molek Christopher D.,
Welle Eric J.,
Mares Jesus O.,
Vitarelli Jim,
Barrett Hardin D.,
Stuthers Matthew
Publication year - 2020
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.202080202
Subject(s) - void (composites) , cover (algebra) , porosity , materials science , mineralogy , composite material , geology , engineering , mechanical engineering
The cover picture shows a simple change in particle size distribution, as illustrated in the top plot by the orange shaded region, impacts the initiation behavior of HMX materials pressed to the same density (bottom plot). Threshold velocities depicted are for a thick flyer (203 μm) pressure regime − 2.26 to 4.63 GPa. The large particles of Class 5 powder (top background image) produce elongated void features in the pressed sample (bottom background image), which we believe to be more efficient at producing hot spots in this pressure regime. Graphic design courtesy of Mr. John Leake. More details can be found in the Full Paper by Christopher D. Molek, Eric J. Welle, Jesus O. Mares, Jr., Jim Vitarelli, D. Barrett Hardin, and Matthew Stuthers on page 236 ff.