Effects of specimen geometry and loading mode on crack growth resistance curves of a high-strength pipeline girth weld

Autor(es)

Mathias, Leonardo L. S. ^[1] ; Sarzosa, Diego F. B. ^[1] ; Ruggieri, Claudio ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Naval Architecture & Ocean Engn, BR-05508030 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING; v. 111, p. 106-119, NOV-DEC 2013.
• Citações Web of Science: 32

Resumo

This work presents an investigation of the ductile tearing properties for a girth weld made of an API 5L X80 pipeline steel using experimentally measured crack growth resistance curves. Use of these materials is motivated by the increasing demand in the number of applications for manufacturing high strength pipes for the oil and gas industry including marine applications and steel catenary risers. Testing of the pipeline girth welds employed side-grooved, clamped SE(T) specimens and shallow crack bend SE(B) specimens with a weld centerline notch to determine the crack growth resistance curves based upon the unloading compliance (UC) method using the single specimen technique. Recently developed compliance functions and eta-factors applicable for SE(T) and SE(B) fracture specimens with homogeneous material and overmatched welds are introduced to determine crack growth resistance data from laboratory measurements of load-displacement records. (C) 2013 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 09/54229-3 - Integridade estrutural em juntas soldadas circunferenciais de dutos e risers
• Beneficiário: Claudio Ruggieri
• Modalidade de apoio: Auxílio à Pesquisa - Regular