Determination of Fracture Stress and Effective Crack Tip Radius from Toughness (KIC) and Yield Strength (Y)

Abstract

Extensive analysis was completed of available fracture mechanics and strength data and graphical procedures developed to relate effective crack tip radius to inherent materials properties. Fracture stress and effective crack tip radius are estimated from a log-log plot of K sub IC and corresponding yield strength using transparent overlays supplied with the paper. Examples are employed to illustrate the method. The influence of testing temperature, metallurgical structure, chemistry, and the existence of an effective crack tip radius are discussed. Associated tables are included relating two dimensionless parameters involving toughness, yield strength, crack tip radius, and peak stress at any elasticity containing a degree of yielding consistent with valid toughness data.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1978
Accession Number
ADA064994

Entities

People

  • Anna M. Hansen
  • Reinier Beeuwkes Jr.
  • Robert T. Tremblay

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Chemical Engineering
  • Chemistry
  • Elastic Properties
  • Engineering
  • Fracture (Mechanics)
  • Materials
  • Materials Engineering
  • Materials Science
  • Mechanical Properties
  • Mechanics
  • Metallurgy
  • Military Research
  • Modulus Of Elasticity
  • Stress Analysis
  • Stress Concentration
  • Stresses
  • Yield Strength

Readers

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