Copper Crusher Cox Manufacturing Compan
A copper crusher gauge holder for testing internal pressures of cartridges during test firing is provided. The copper crusher gauge holder has a circular aluminum upper plate and a circular aluminum lower plate having a layer of urethane rubber approximately 34 inch thick sandwiched between the plates. The gauge holder is bored to hold copper crusher gauges and center-bored to fit over a ... Feb 27, 2020 In the field of interior ballistics, crusher gauges are still widely used for the gas peak pressure measurement within a fired ammunition. Under the effect of the gas chamber pressure, a copper cylinder deforms plastically and records its maximum amplitude. Background Timeline Circa 1860, use of copper crusher gages began (static calibration used) Circa 1920, use of electronic chamber pressure transducers began Circa 1960, dynamic calibration of crusher gages began (25% improvement) 1990 NATO crusher trials imply 1% difference between US (Tourmaline) and French (Quartz) measurements (Everyone celebrates excellent
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