Statistical Analysis of Critical CTOD and J Values in SAW C-Mn Steel Welds

  • A. Fontaine
  • J. A. Le Duff
  • B. Marandet
  • Y. Sixou
Conference paper


A statistical analysis of fracture toughness test results obtained in the case of the weld metal of a structural steel is reported. It is shown that, when the standard J and CTOD tests methods are used, no significant differences between different laboratories are observed. CT specimens are as well suited as SENB for CTOD determination. The scatter of the fracture toughness values at initiation is correctly fitted by a log-normal distribution. The level of fracture toughness at a given temperature depends on the in-plane dimensions of the specimens, when initiation takes place by ductile tearing. The relationship between J and CTOD critical values is reanalysed.


Fracture Toughness Weld Metal Fracture Parameter Specimen Type Specimen Width 
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Copyright information

© Springer-Verlag Berlin, Heidelberg 1986

Authors and Affiliations

  • A. Fontaine
    • 1
  • J. A. Le Duff
    • 2
  • B. Marandet
    • 1
  • Y. Sixou
    • 1
  1. 1.Institut de Recherches de la Sidérurgie Française (IRSID)St Germain-en-LayeFrance
  2. 2.Institut de Soudure (IS)EnneryFrance

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