Fracture Toughness Testing

Abstract

A comprehensive survey is presented of current methods of fracture toughness testing that are based on linear elastic fracture mechanics. General principles are discussed in relation to the basic two-dimensional crack stress field model and in relation to real three-dimensional specimens. The designs and necessary dimensions of specimens for mixed mode and opening mode (plane strain) crack toughness measurement are considered in detail. Methods of test instrumentation and procedure are described. Expressions for the calculation of crack toughness values are given for the common types of specimens.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1965
Accession Number
ADA394414

Entities

People

  • John E. Srawley
  • William F. Brown Jr.

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Aircraft Industry
  • Aircrafts
  • Crack Propagation
  • Equations
  • Fracture (Mechanics)
  • Geometry
  • Load Cells
  • Materials
  • Measurement
  • Measuring Instruments
  • Mechanics
  • Modulus Of Elasticity
  • Strain Gages
  • Test Methods
  • Two Dimensional
  • Voltage

Readers

  • Fluid Dynamics.
  • Structural Health Monitoring of Composite Structures.