Load-Line Displacements for Three-Point Bend J Tests Using Bottom Surface Displacements

Abstract

Finite element calculations show that elastic displacements along the bottom surface of a three-point bend specimen can be used to obtain a close approximation to the load-line displacement at the crack line. The use of load- line displacement for measuring crack growth by unloading compliance is discussed with application to a simplified test procedure for J-integral fracture toughness tests. (JS)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1990
Accession Number
ADA229634

Entities

People

  • John H. Underwood
  • M. D. Witherell

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Air Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Classification
  • Crack Tips
  • Cracks
  • Displacement
  • Engineering
  • Fracture (Mechanics)
  • Information Security
  • Integrals
  • J Integrals
  • Mechanics
  • Military Research
  • Modulus Of Elasticity
  • Security
  • Stress Intensity Factors
  • Toughness
  • Unloading

Fields of Study

  • Engineering

Readers

  • Materials Science (Mechanical Engineering).