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Gouge assessment for pipes and associated transferability problem

Abstract : The purpose of this work is to assess a gouge defect in a pipe submitted to internal pressure. To do that a method based on failure assessment diagram and more precisely on a Modified Notch Failure Assessment Diagram (NMFAD) which has been proposed as a mesofracture approach. The safety factor has been determine under conservative conditions i.e. for a X52 pipe steel having a relatively low fracture toughness and a severe gouge defect with high aspect ratio and high constraint. In addition a mesofracture approach of the fracture toughness transferability problem has been proposed. The crack (K-T) methodology has been modifying to create the (K q-T ef) two parameters fracture resistance criterion.
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Submitted on : Monday, October 19, 2020 - 4:57:54 PM
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M Hadj Meliani, Z Azari, G Pluvinage, Julien Capelle. Gouge assessment for pipes and associated transferability problem. Engineering Failure Analysis, Elsevier, 2010, ⟨10.1016/j.engfailanal.2010.01.007⟩. ⟨hal-02970939⟩



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