Abstract
The Tε* integral was calculated on the surface of single edge notched, three-point bend (SE(B)) specimens using experimentally obtained displacements. Comparison was made with Tε* calculated with the measured surface displacements and Tε* calculated at several points through the thickness of a finite element (FE) model of the SE(B) specimen. Good comparison was found between the surface Tε* calculated from displacements extracted from the FE model and the surface Tε* calculated from experimentally obtained displacements. The computed Tε* integral was also observed to decrease as the crack front was traversed from the surface to the mid-plane of the specimen. Mid-plane Tε* values tend to be approximately 10% of the surface values.
Original language | English |
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Pages (from-to) | 207-213 |
Number of pages | 7 |
Journal | Experimental Mechanics |
Volume | 44 |
Issue number | 2 |
DOIs | |
State | Published - Apr 2004 |
Keywords
- CTOA
- Crack tunneling
- Stable crack growth
- T integral
- Three-dimensional fracture