The J Integral. A Review of Theory and a Suggested Method for Jc Determination,

Abstract

Following a review of the theoretical justification for the use of Jc as an elastic-plastic fracture criterion, the report suggests a new method for its laboratory determination. Advantages of the new method include: unambiguous continuity with Kc; full compatiblity with the existing standard for COD testing; and an ability to deal with slow crack growth and the effects of lateral constraint. The report concludes with an outline of future work and detailed instructions for the determination of Jc in a 3pt bend specimen with a crack length to width ratio of between 0.25 and 0.6. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1976
Accession Number
ADA038150

Entities

People

  • J. D. G. Sumpter

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Continuum Mechanics
  • Contour Integrals
  • Crack Tips
  • Engineering
  • Finite Element Analysis
  • Foreign Languages
  • Fracture (Mechanics)
  • Geometry
  • J Integrals
  • Laboratory Tests
  • Materials
  • Materials Science
  • Materials Testing
  • Mechanics
  • Physics
  • Stress Intensity Factors
  • Test Methods

Readers

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