engleski

Validity of J-R resistance curve in the case of ductile crack growth

The validity of J-R resistance curve by CCT fracture toughness specimen with significant ductile crack growth has been evaluated. It was found that far-field J-integral loses its ability to unambiguously correlate crack growth after crack initiation. Therefore, J-integral values should be taken very careful after crack initiation. However, if the crack growth is mainly J-controlled, the J-R curve may be considered as valid and as material property.

CCT fracture toughness specimen; J-R resistance curve; ductile crack growth; validity

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