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

Autor: Zitouni Azari, M. Ben Amara, Julien Capelle, Guy Pluvinage
Přispěvatelé: Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM)
Rok vydání: 2019
Předmět:
Engineering
business.industry
Tension (physics)
Mechanical Engineering
Pipeline (computing)
0211 other engineering and technologies
Fracture mechanics
[SPI.MECA.MSMECA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Materials and structures in mechanics [physics.class-ph]
02 engineering and technology
Structural engineering
Finite element method
[SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph]
Pipeline transport
020303 mechanical engineering & transports
0203 mechanical engineering
Mechanics of Materials
[SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph]
Fracture (geology)
General Materials Science
Node (circuits)
business
Wall thickness
021101 geological & geomatics engineering
Zdroj: Engineering Fracture Mechanics
Engineering Fracture Mechanics, Elsevier, 2017, ⟨10.1016/j.engfracmech.2017.09.028⟩
ISSN: 0013-7944
DOI: 10.1016/j.engfracmech.2017.09.028
Popis: International audience; 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.
Databáze: OpenAIRE
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