Crack Paths 2009

M T S

Generalized M T S

Figure 7. Comparison of conventional and generalized M T Scriteria for fracture path

in a S C Bspecimen.

C O N C L U S I O N S

-The fracture initiation angle and the crack path trajectory under mixed mode loading

conditions were not the same for C C C Dand S C Bspecimens. The trajectories depended

on the mode mixity and the specimen type.

-There is a positive T-stress in the S C B specimen and this is the main reason why the

crack path deviates more when this specimen is subjected to mixed mode loading

compared to the C C C Dspecimen which has very large negative T-stress.

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