Abstract
The failure of stainless steel piping containing circumferential cracks has been predicted on the basis that crack extension occurs when the net-section stress exceeds some critical value. This paper addresses the question as to whether the net-section stress approach can be applied to the failure of thin tubes, for example Inconel steam generator tubes. The results of a theoretical analysis suggest that the approach should be applicable when it is used to predict the development of a part-through and part-circumference crack into a through-wall crack.
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