"Instrumentation and techniques employing a constant current in a 4 ft. length of Nichrome resistance wire embedded in an explosive mixture were developed to measure detonation velocity in small diameter boreholes.
The resistance element technique was evaluated by detonating mixtures in iron and clay pipes, and it was shown that the current in the circuit was not constant. Velocity measurements varied from 8,000 fps to 16,000 fps. Low velocity material provided poor time - voltage traces.
The resistance element method was compared to a pin oscillograph technique, and an explanation was offered for observed differences in velocity. The standard deviation for the corrected resistance element velocity records was found to be approximately two and one-half times larger than the standard deviation for pin oscillograph velocity records"--Abstract, page ii.
Clark, George Bromley, 1912-
Worley, Morris Thrane
Erkiletian, Dickran Hagop, Jr.
Pagano, Sylvester J., 1924-2006
M.S. in Mining Engineering
Monsanto Chemical Company of St. Louis
Missouri School of Mines and Metallurgy
vii, 60 pages
© 1962 William Stewart Breakey, All rights reserved.
Thesis - Open Access
Explosives -- Testing
Detonation waves -- Measurement
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Electronic OCLC #
Link to Catalog Record
Breakey, William Stewart, "An evaluation of the resistance element method for measuring detonation velocity of AN-FO mixtures confined in small diameter boreholes" (1962). Masters Theses. 2718.