Abstract
In this study, the failure assessment diagram (FAD) is constraint modified using the assumption that the constraint T stress is proportional to the non-dimensional loading. The constraint-modified FAD has been used to compute safety factors associated with spherical and elliptic defects and a long notch. The results were compared to the classical approach, indicating the possibility of a reduction of conservatism. In addition, the use of domain constraint-modified FAD indicates that in some cases, increases in fracture toughness due to the loss of constraint lead to the use of limit analysis rather than an elasto-plastic fracture mechanics approach.
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