THE EFFECT OF METAL PROPERTIES ON HYPERVELOCITY PENETRATION

Abstract

Analysis of the terminal displacement fields of five wire-mesh copper targets was carried out. These displacements were used to compute Lagragian strains presuming cylindrically symmetric flow patterns. The second invariant of the strain tensor was calculated and compared to hardness profiles taken on the targets. A sixth specimen was impressed statically and observations on its displacement field are compared with the dynamic case. Regions of material flow were observed qualitatively and are described by the following terms: evacuated volume; reverse flow to form the lip; and, region of approximate spherical symmetry. Problems encountered and suggestions for further work are included.

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Document Details

Document Type
Technical Report
Publication Date
Dec 31, 1965
Accession Number
AD0484471

Entities

People

  • Robert E. Green Jr.

Organizations

  • Johns Hopkins University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Contracts
  • Copper
  • Copper Oxides
  • Displacement
  • Flow
  • Flow Fields
  • Hardness
  • Materials
  • Measurement
  • Metals
  • Observation
  • Personality
  • Secondary Flow
  • Silver Solders
  • Terminals

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Fluid Dynamics.
  • Plasma Physics / Magnetohydrodynamics

Technology Areas

  • Hypersonics