Abstract
In the present research, T-stress solutions are provided for a U-shaped notch in the case of four specimens: CT, DCB, SENT and Romain Tile (RT). The U-shaped notch is analyzed using the finite element method to determine the stress distribution ahead of the notch tip. In contrast to a crack, it was found that the T-stress is not constant and depends on distance from the notch-tip. To estimate the T-stress in the case of a notch, a novel method, namely, method of line, inspired from the volumetric method approach proposed by Pluvinage has been developed. Thus, the two-parameter approach was adopted for the notch two-parameter fracture mechanics in terms of the notch stress intensity factor Kρc and the effective (average) T-stress, Tef. Fracture toughness transferability curve (Kρc -Tef) of X52 pipe steels has been established.
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Meliani, M.H., Azari, Z., Pluvinage, G., Matvienko, Y.G. (2011). Two Parameter Engineering Fracture Mechanics: Calculation of the Relevant Parameters and Investigation of Their Influence on the Surface Notch. In: Bolzon, G., Boukharouba, T., Gabetta, G., Elboujdaini, M., Mellas, M. (eds) Integrity of Pipelines Transporting Hydrocarbons. NATO Science for Peace and Security Series C: Environmental Security, vol 1. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-0588-3_16
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