文献类型：期刊文献

英文题名：Characterization and correlation of 3-D creep constraint between axially cracked pipelines and test specimens

作者：Tan, J. P.[1];Tu, S. T.[1];Wang, G. Z.[1];Xuan, F. Z.[1]

机构：[1]E China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China

年份：2015

卷号：136

起止页码：96

外文期刊名：ENGINEERING FRACTURE MECHANICS

收录：;EI(收录号：20150800559422);WOS:【SCI-EXPANDED(收录号:WOS:000350961600008)】；

基金：This work was financially supported by the Projects of the National Natural Science Foundation of China (51375165, 51325504).

语种：英文

外文关键词：3-D creep constraint; Correlation; Axially cracked pipeline; Test specimen; Finite element analysis

摘要：Three-dimensional creep crack-tip constraints of axially cracked pipes and conventional test specimens have been characterized and analyzed by a load-independent creep constraint parameter R* proposed by authors. An average measure of constraint over the crack front is utilized to correlate the creep constraint between the 3-D axially cracked pipelines and test specimens. It was found that single-edge notched tension specimens provide a closely matched creep crack-tip constraint with axially cracked pipes. The investigation results provide a strong support for use of constraint-designed specimens in creep life assessment of pressurized pipes. (C) 2015 Elsevier Ltd. All rights reserved.