THEORETICAL MODEL OF DUCTILE FRACTURE INSTABILITY BASED ON STRESS-WAVE EMISSION.

Abstract

The report discusses a postulated, very general interpretation of fracture in terms of how dislocation mobility affects the local fracture stress. However, it is difficult to correlate this concept directly to the slow crack growth process which occurs in many complex materials. Also, there has been little experimental evidence of dislocation dynamics and discontinuous crack motion in complex materials which would allow such a model to be established. This program was initiated to study these characteristics in an effort to establish such a fracture criterion. (Author)

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1969
Accession Number
AD0684137

Entities

People

  • W. G. Reuter
  • W. W. Gerberich

Organizations

  • Aerojet Rocketdyne Holdings

Tags

DTIC Thesaurus Topics

  • Dislocations
  • Dynamics
  • Emission
  • Instability
  • Materials
  • Mechanical Properties
  • Mobility
  • Physical Properties
  • Stress Waves
  • Stresses
  • Waves

Readers

  • Materials Science and Engineering.
  • Structural Health Monitoring of Composite Structures.