High Pressure Shock Wave Behavior of Greatly Distended Copper

Abstract

High pressure shock waves were produced and studied in porous copper samples by high velocity impact of flat plates. Flat plates of copper and tungsten alloy were projected at velocities up to 8 mm/microsecs using a two- stage light gas gun. Samples of porous copper with distention ratios of 3.08, 4.46 and 8.74 (32.4%, 22.4% and 11.4% of solid density) were studied through shock transit measurements. Analysis of the experiments reveals that a complex (two-wave) shock structure exists in the open called materials impacted at conditions that would result in shock stresses up to 4 Mb in solid targets. The nature of the double wave precludes the use of the Rankine-Hugoniot equations which assume that thermo-dynamic equilibrium is attained behind a discontinuous shock.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1972
Accession Number
AD0757633

Entities

People

  • A. R. Mcmillan
  • F. H. Shipman

Organizations

  • General Motors

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Corporations
  • Elastic Waves
  • Equations
  • Gas Guns
  • High Pressure
  • Hugoniot Equations
  • Light Gas Guns
  • Materials
  • Materials Testing
  • Measurement
  • Metals
  • Physical Properties
  • Porous Materials
  • Shock Waves
  • Tungsten Alloys
  • Waves
  • X Rays

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Materials Science and Engineering.