Concepts of Fracture Toughness and Structural Integrity.

Abstract

The concept of fracture toughness is introduced. The factors that determine the toughness levels of structural steels are discussed in terms of strength and temperature transitions, strain rate dependence, and mechanical constraint. Test procedures for measuring toughness are highlighted, beginning with linear-elastic fracture mechanics and including such engineering tests as the Charpy-V, Dynamic Tear, and Drop-Weight NDT tests. However, advanced research topics involving elastic-plastic toughness, such as the J-integral, are beyond the scope of the discussion. Finally, the applicability of the various test procedures to analysis of structural integrity is discussed. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 31, 1977
Accession Number
ADA038828

Entities

People

  • Frank J. Loss

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemistry
  • Crack Tips
  • Engineering
  • Fracture (Mechanics)
  • J Integrals
  • Materials
  • Measurement
  • Mechanical Working
  • Mechanics
  • Plastic Flow
  • Pressure Vessels
  • Rats
  • Rodents
  • Safety Analysis
  • Statistical Analysis
  • Strain Rate
  • Test Methods

Readers

  • Materials Science (Mechanical Engineering).
  • Systems Analysis and Design