High-frequency measurements of blast wave propagation.
Blast wave propagation measurements were conducted to investigate nonlinear propagation effects on blast waveform evolution with distance. Measurements were made with a wide-bandwidth capacitor microphone for comparison with conventional 3.175-mm (1/8-in.) microphones with and without baffles. It was found that the 3.175-mm microphone did not have sufficient high-frequency response to capture the actual rise times in some regions. For a source of 0.57 kg (1.25 lb) of C-4 plastic explosive, the trend observed is that nonlinear effects steepened the waveform, thereby decreasing the shock rise time, up to a range of 50 m. At 100 m, the rise times had increased slightly.
Loubeau
Alexandra
A
Sparrow
Victor W
VW
Pater
Larry L
LL
Wright
Wayne M
WM
D000162:Acoustics / Q000295:instrumentation*; D000818:Animals; D001753:Blast Injuries / Q000503:physiopathology*; D005107:Explosions; D006317:Hearing Loss, Noise-Induced / Q000503:physiopathology*; D006801:Humans; D017711:Nonlinear Dynamics