摘要
在管道环焊缝断裂韧性的测试过程中,在相同试验条件下进行多次试验,断裂韧性数据经常会表现出一定的离散性。为了减少离散断裂韧性数据处理不当对环焊缝工程临界评价(Engineering critical assessment,ECA)或可靠性评估造成的影响,依据近年研究成果及相关国际标准,论述了3种主要的离散断裂韧性数据分析处理方法,并进行了使用条件及优劣势的对比,为环焊缝评估中离散断裂韧性数据处理提供了参考。
The data from repeated fracture toughness tests for pipeline girth weld under same conditions always show scattering characteristic.Three methods of scattered fracture toughness data treatment are discussed based on the research progress in recent years and related international standards in order to reduce the impact of scattered fracture toughness data on the engineering critical assessment(ECA)and reliability assessment of structural engineering.The advantages and disadvantages of these methods are compared and the application conditions are analyzed.The work provides a reference for the treatment of scattered fracture toughness data for assessment of pipeline girth weld.
作者
曹思可
池强
陈宏远
张骁勇
CAO Sike;CHI Qiang;CHEN Hongyuan;ZHANG Xiaoyong(School of Material Science and Engineering,Xi′an Shiyou University,Xi′an,Shaanxi 710065,China;State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials,CNPC Tubular Goods Research Institute, Xi′an,Shaanxi 710077,China)
出处
《石油管材与仪器》
2022年第1期34-39,共6页
Petroleum Tubular Goods & Instruments
基金
国家重点研发计划项目“低温高压服役条件下高强度管线用钢”(编号:2017YFB0304900)
国家管网集团科研项目“高等级钢管道可靠性评估因素识别与评估体系研究”(编号:GJGW-KJXX-2020-017)。
关键词
断裂韧性
MOTE
分布拟合
主曲线法
fracture toughness
MOTE
fitting of distribution
the Master Curve
