Numerical analysis and experimental research on detection of welding defects in pipelines based on magnetic flux leakage
作者机构：School of Mechanical EngineeringQilu University of Technology(Shandong Academy of Sciences)Jinan 250353China Shandong Institute of Mechanical Design and ResearchJinan 250031China CNPC Economics&Technology Research InstituteBeijing100120China Shandong Special Equipment Inspection Institute Group Co.Ltd.Jinan 250101China School of Energy and Power EngineeringShandong UniversityJinan 250061China
出 版 物：《Petroleum Research》 (石油研究（英文）)
年 卷 期：2023年第8卷第4期
页 面：550-560页
核心收录：
学科分类：0709[理学-地质学] 0819[工学-矿业工程] 0808[工学-电气工程] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0807[工学-动力工程及工程热物理] 0816[工学-测绘科学与技术]
基 金：supported by Science,Education and Industry Integration Pilot Foundation Research Project(2022PX100)granted by Qilu University of Technology(Shandong Academy of Sciences) Young Innovative Talents Introduction&Cultivation Program for Colleges and Universities of Shandong Province(Sub-title:Innovative Research Team of Advanced Energy Equipment)granted by Department of Education of Shandong Province,and Natural Science Foundation ofShandong Province of China(No.ZR2020ME178)
主 题：Magnetic flux leakage Pipeline welding defect Incomplete penetration Undercut
摘 要：Regular inspection of long-distance oil and gas pipelines plays an important role in ensuring the safe transportation of oil and gas,and inspection on welding defects is an important part of the inspection *** flux leakage(MFL)is an electromagnetic non-destructive testing technique which has been commonly utilized to detect welding defects in *** the present study,Maxwell electro-magnetic simulation software was used to carry out numerical study on the welding defects in pipelines,including incomplete penetration and ***Ф406 pipeline with a wall thickness of 7 mm was selected as the study case to establish the numerical *** the life-off value at 1 mm,the distribution of magnetic leakage field was investigated for pipeline without defect,pipeline with incomplete penetration defect and pipeline with undercut defect respectively,the characteristic values describing the depth and width of defects were ***,quantified equations which can be used to describe the defect depth were ***,experimental research was carried out to validate the effectiveness of the numerical model,and the experimental results showed good consistence with the numerical calculation *** research results indicate that,it is technically feasible and reliable to diagnose the incomplete penetration and undercut welding defects in pipelines using MFL.
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