Numerical Compliance and Stress Intensity Factor Calibrations of MRL (Materials Research Laboratories) Compact Specimens.

Abstract

The fracture mechanics parameters K sub IC (the plane strain fracture toughness) and J sub IC (the critical value of the J integral) characterise the resistance of a material to cracking for elastic and elastic-plastic conditions at the crack tip respectively. Standard specimen configurations are available for K sub IC and J sub IC testing, and these are given in ASTM standards E-399 and E-813 respectively. At Materials Research Laboratories, Melbourne, a compact specimen design has been developed which has been found to be suitable for both K sub IC and J sub IC testing. For determining K sub IC, a stress intensity factor (K) calibration is required for the specimen, and for determining J sub IC using the single specimen technique, a compliance calibration is needed. This memorandum describes these calibrations, which were obtained using finite element analyses, and gives equations which have been fitted to the results for convenience. Keywords: Stress analysis; Tables(Data).

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1985
Accession Number
ADA165833

Entities

People

  • J. Paul
  • M. Heller

Tags

DTIC Thesaurus Topics

  • Air Force
  • Biodiesels
  • Civil Engineering
  • Crack Tips
  • Department Of Defense
  • Elastic Properties
  • Engineering
  • Finite Element Analysis
  • J Integrals
  • Materials
  • Materials Engineering
  • Materials Science
  • Mechanics
  • Modulus Of Elasticity
  • Numerical Analysis
  • Standards
  • Stress Intensity Factors

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