Abstract
TheT *ε integral was calculated on the surface of single edge notched, three-point bend (SE(B)) specimens using experimentally obtained displacements. Comparison was made withT *ε calculated with the measured surface displacements andT *ε calculated at several points through the thickness of a finite element (FE) model of the SE(B) specimen. Good comparison was found between the surfaceT *ε calculated from displacements extracted from the FE model and the surfaceT *ε calculated from experimentally obtained displacements. The computedT *ε integral was also observed to decrease as the crack front was traversed from the surface to the mid-plane of the specimen. Mid-planeT *ε values tend to be approximately 10% of the surface values.
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Jackson, J.H., Kobayashi, A.S. & Atluri, S.N. An experimental—Numerical evaluation of theT *ε integral for a three-dimensional crack front. Experimental Mechanics 44, 207–213 (2004). https://doi.org/10.1007/BF02428180
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DOI: https://doi.org/10.1007/BF02428180