In this paper, on the basis of the stress analysis of an equivalent model, the stress intensity factors (SIF) of a crack have been evaluated. In the stress analysis, the crack is substituted by an equivalent hole equal in size to the length of the crack. The method is based on the evaluation of the hoop stress on the free border of the equivalent hole and the subsequent calculation of the J-integral (JVρ ) as a parameter related to the SIF. Alternatively, if the hoop stress on the free border cannot be evaluated, the stress analysis can be performed on the surface in the neighbourhood of the hole.

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hole stress analysis model border italicjitalicintegral italicjinf locpostvinf italic stress intensity factors sif

Paolo Livieri,.Stress intensity factors from stress analysis of an equivalent hole. 84 (0),119-128.

Paolo Livieri,"Stress intensity factors from stress analysis of an equivalent hole" 84

Paolo Livieri,"Stress intensity factors from stress analysis of an equivalent hole"