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author

Alexander Christiansen
David Bogosian

published on

November 2012

Obtaining pressure and impulse data from explosions where fragments are present can be challenging. One way of protecting airblast gauges from damage due to fragment debris is to place a small but physically robust obstruction directly between the charge and the target. Typically, a vertical metal pole (steel pipe, usually) is positioned directly in-line between the charge and the gauge. The presence of this pipe, however, reduces the amount of blast energy that reaches the target and affects the measured pressure record. A widely implemented rule of thumb suggests that placing the pole at a standoff of 10 pole diameters from the gauge causes a negligible reduction in the airblast impulse that reaches the target.

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alexander christiansen

david bogosian, PE