System for Measuring Plate Deformation Produced by Explosive Shock Waves, and Motion-Sensing Accelerometer Transducer Used Therein.
DEPARTMENT OF THE ARMY WASHINGTON DC
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A novel testing system is described which utilizes a novel subcombination multiple pinprobe type motion-sensing accelerometer transducer, capable of sensing exceptionally high levels of structural motion, in the domain of from about 1,000,000 to 10,000,000 Gs force of gravity. Such motion may be imparted by shock wave forces generated by detonation of high energy ballistic andor land mine charges, thereby generally deforming some portions of closely adjacent, high strength structures such as steel armor plate being tested. This novel accelerometer transducer comprises at least two and preferably from six to eight potentially deformable pin-like contact probes preferably of pure annealed metal which preferably project from both sides of a support fixture. When the power source is on, pin-plate contact resuting from such blast deformation force progressively energizes the respective subcircuits, from which the timed differences between contacts and other data are measured and used primarily to novelly compute instantaneous velocity and average acceleration of such deformation.
- Electrical and Electronic Equipment
- Test Facilities, Equipment and Methods