SOME RELATIONSHIPS BETWEEN FRACTURE TOUGHNESS, APPLIED STRESS OF STRAIN AND FLAW SIZE

For low values of strain divided by yield strain, more accurate measures of displacement are required so that large errors are not involved when determining strain and strain divided by yield strain values. Measurements to 1x10 to the minus 3rd power in. should be sufficiently accurate for elastic displacements of the order of 35x10 to the minus 3rd power in. Testpiece geometry and flaw type have a significant effect on non-dimensional crack open displacement versus strain over strain yield. Surface flaws (part through the thickness) exhibit more developed COD at the same applied strain level than either the double edge notched or center notched tension geometries. Data are also included for determining critical flaw sizes for failure by brittle fracture.

  • Corporate Authors:

    Welding Institute

    Abingdon Hall
    Cambridge CB1 6AL,   England 
  • Authors:
    • Egan, G R
  • Publication Date: 1974

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00072694
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Jan 16 1976 12:00AM