New numerical tools to calibrate the Two Curves Method using the CTOA criterion - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Engineering Fracture Mechanics Année : 2019

New numerical tools to calibrate the Two Curves Method using the CTOA criterion

Résumé

Keywords: API 5L X65 pipeline steel Two-curve method CTOA FEM Node release technique Running-ductile fracture a b s t r a c t Based on the Crack-Tip Opening Angle (CTOA) fracture criterion and the finite element method coupled with the node release technique, a New Two-Curve method (TCM) was proposed for the prediction of gas pipelines' crack arrestability. Arrest pressure, crack propagation velocity and length were predicted successfully. A modern high-toughness pipeline made in API 5L X65 pipeline steel with 19 mm wall thickness and a 355 mm external diameter was investigated. The critical CTOA (CTOA C) property was measured with a Modified Compact Tension (MCT) specimen at room temperature. A new method for evaluating the CTOA C by combining experimental load-deflection data and finite element analysis was implemented. The results of the CTOA C were compared with the available CTOA C data. The results for the New Two-Curve method were discussed and compared with those obtained by well-established methods such as Battelle-TCM, HLP and HLP-Sumitomo.
Fichier non déposé

Dates et versions

hal-02972772 , version 1 (21-10-2020)

Identifiants

Citer

M Ben Amara, G Pluvinage, Julien Capelle, Z Azari. New numerical tools to calibrate the Two Curves Method using the CTOA criterion. Engineering Fracture Mechanics, 2019, 205 (532-546), ⟨10.1016/j.engfracmech.2017.09.028⟩. ⟨hal-02972772⟩
37 Consultations
1 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More