Gouge Assessment for Pipes and Associated Transferability Problem

Abstract:

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The purpose of this work is to assess a gouge defect in a pipe submitted to internal pressure. To do that a method is used which is based upon a failure assessment diagram and, more precisely, upon a Modified Notch Failure Assessment Diagram (NMFAD) which has been proposed as a mesofracture approach. The safety factor has been determined 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 to the fracture toughness transferability problem has been proposed. The crack (K-T) methodology has been modifed to create the ( –Teff) two-parameter fracture resistance criterion.

Info:

Periodical:

Edited by:

David J. Fisher

Pages:

15-25

DOI:

10.4028/www.scientific.net/DDF.294.15

Citation:

M. Hadj Meliani et al., "Gouge Assessment for Pipes and Associated Transferability Problem ", Defect and Diffusion Forum, Vol. 294, pp. 15-25, 2009

Online since:

December 2009

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Price:

$35.00

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