title: Theory and Application of Magnetic Flux Leakage Pipeline Detection.
abstract: Magnetic flux leakage (MFL) detection is one of the most popular methods of pipeline inspection. It is a nondestructive testing technique which uses magnetic sensitive sensors to detect the magnetic leakage field of defects on both the internal and external surfaces of pipelines. This paper introduces the main principles, measurement and processing of MFL data. As the key point of a quantitative analysis of MFL detection, the identification of the leakage magnetic signal is also discussed. In addition, the advantages and disadvantages of different identification methods are analyzed. Then the paper briefly introduces the expert systems used. At the end of this paper, future developments in pipeline MFL detection are predicted.
authors.affiliation: School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China. yesoyou@gmail.com.
authors.forename: Yan
authors.initials: Y
authors.lastname: Shi
authors.affiliation: School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China. zhangchaobuaa3xi@163.com.
authors.forename: Chao
authors.initials: C
authors.lastname: Zhang
authors.affiliation: School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China. kjlirui@petrochina.com.cn.|PetroChina Pipeline Company, Langfang 065000, China. kjlirui@petrochina.com.cn.
authors.forename: Rui
authors.initials: R
authors.lastname: Li
authors.affiliation: School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China. caimaolin@gmail.com.
authors.forename: Maolin
authors.initials: M
authors.lastname: Cai
authors.affiliation: School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China. jiaguanwei@126.com.
authors.forename: Guanwei
authors.initials: G
authors.lastname: Jia
keywords: in-line inspection; magnetic flux leakage detection; pipeline; review