Accession Number : ADD009034

Title :   System for Measuring Plate Deformation Produced by Explosive Shock Waves, and Motion-Sensing Accelerometer Transducer Used Therein.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Miguel,Anthony San

Report Date : 28 Aug 1981

Pagination or Media Count : 29

Abstract : A novel testing system is described which utilizes a novel subcombination multiple pin/probe 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 and/or 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.

Descriptors :   *Patent applications, *Pressure transducers, *Plastic deformation, *Accelerometers, Pins, Annealing, Copper, Wiring diagrams, Armor plate, Steel, IMpact shock, Mines(Ordnance), Blast loads, Time dependence, Velocity, Stress strain relations

Subject Categories : Electrical and Electronic Equipment
      Test Facilities, Equipment and Methods
      Armor

Distribution Statement : APPROVED FOR PUBLIC RELEASE