Some Correlations between Plate Shatter and Fracture Toughness.

Abstract

Conventional ballistic evaluation of armor plate is based on a critical impact velocity for penetration. At high hardness levels and/or low temperatures, ballistic impact can give rise to extensive plate cracking whether or not penetration occurs. This report provides preliminary results on a test procedure involves the introduction of a large flaw or 'crack starter' at the center of a plate and then impacting the center of the opposite face with a soft, blunt-nosed projectile. The impact tests are performed over a range of temperatures to yield a plate shatter transition temperature. The PSTT is simply the highest plate temperature at which extensive plate shatter occurs. The influence of PSTT test parameters and correlation with fracture toughness are currently being studied. Keywords: Crack propagations.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1987
Accession Number
ADA178645

Entities

People

  • Albert A. Anctil
  • Eric B. Kula
  • John G. Cowie
  • Morris Azrin

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Electron Beams
  • Engineering
  • Geometry
  • Hardness
  • Heat Treatment
  • Impact Tests
  • Low Temperature
  • Materials
  • Mechanical Properties
  • Mechanics
  • Military Research
  • Projectiles
  • Resistance
  • Steel
  • Test And Evaluation
  • Toughness

Readers

  • Explosive Engineering.
  • Materials Science (Mechanical Engineering).