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Optical Measurement of Peak Air Shock Pressures Following Explosions
Author(s) -
McNesby Kevin L.,
Biss Matthew M.,
Benjamin Richard A.,
Thompson Ronnie A.
Publication year - 2014
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201300023
Subject(s) - detonation , shock (circulatory) , explosive material , mach number , streak camera , shock wave , materials science , pressure measurement , detonation velocity , optics , metre , mechanics , acoustics , physics , chemistry , meteorology , laser , medicine , organic chemistry , astronomy
Abstract High speed video and streak camera imaging are used to measure peak pressures for explosions of spherical charges of the high explosive C‐4 (92 % trimethylenetrinitramine, C 3 H 6 N 6 O 6 ). The technique measures the velocity of the air shock produced by the detonation of the explosive charges, converts this velocity to a Mach number, and uses the Mach number to determine a peak shock pressure. Peak pressure measurements are reported from a few millimeters to approximately one meter from the charge surface. Optical peak pressure measurements are compared to peak pressures measured using piezoelectric pressure transducers, and to peak pressure measurements estimated using the blast computer code CONWEP. A discussion of accuracy of peak pressures determined optically is provided.