Dynamic Crack Branching - A Photoelastic Evaluation,

Abstract

A necessary and sufficient condition for crack branching based on a crack branching stress intensity factor, K sub Ib, accompanied by a minimum characteristic distance of r sub c is proposed. This crack branching criterion is evaluated by dynamic photoelastic experiments involving crack branching of six single-edged notch specimens and six wedge-loaded rectangular double cantilever beam specimens. Consistent crack branching at K sub Ib = 2.04 Mpa(sq. rt. m) and r sub c equal 1.3 mm verified this crack branching criterion. The crack branching angle predicted by this crack branching criterion agreed well with those measured in the crack branching experiments. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1982
Accession Number
ADA114525

Entities

People

  • Albert S. Kobayashi
  • B. S.-j. Kang
  • M. Ramulu

Organizations

  • University of Washington

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Cantilever Beams
  • Crack Tips
  • Cracks
  • Engineering
  • Equations
  • Geometry
  • Material Degradation Processes
  • Materials
  • Mechanical Engineering
  • Plastic Explosives
  • Stress Corrosion
  • Stress Intensity Factors
  • Toughness
  • United States
  • Universities
  • Waves

Readers

  • Materials Science (Mechanical Engineering).