Dynamic Fracture Behavior of Structural Materials.

Abstract

The goals of this project are to develop and apply procedures for obtaining more accurate measures of dynamic fracture initiation and propagation toughness and then to establish the relationship between them. We obtain the dynamic initiation toughness, K sub Id, by impacting unsupported edge-cracked bend specimens and using minimum-time crack instability criteria, and we obtain the dynamic propagation toughness, K sub ID, by measuring the temperature histories in material near the tip of a fast running crack. The research efforts on dynamic crack initiation and crack propagation will continue in the next two years and several structural alloys will be investigated.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1983
Accession Number
ADA127902

Entities

People

  • D. A. Shockey
  • J. H. Giovanola

Organizations

  • SRI International

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Aircraft Equipment
  • Amplitude
  • Crack Propagation
  • Crack Tips
  • Cracks
  • Dynamic Loads
  • Fracture (Mechanics)
  • Impact Loads
  • Intensity
  • Materials
  • Measurement
  • Mechanics
  • Plastic Deformation
  • Resistance
  • Strain Gages
  • Vibration

Readers

  • Materials Science (Mechanical Engineering).