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An Evaluation Of The Resistance Element Method For Measuring Detonation Velocity Of An-Fo Mixtures Confined In Small Diameter Boreholes, William Stewart Breakey
An Evaluation Of The Resistance Element Method For Measuring Detonation Velocity Of An-Fo Mixtures Confined In Small Diameter Boreholes, William Stewart Breakey
Masters Theses
"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 …