Non-contact geomagnetic anomaly detection, as one of passive non-destructive testing (NDT) techniques, can be used to locate pipeline defects, while its accuracy is affected by random noise and detection orientation. In order to extract effective geomagnetic anomaly signals of pipeline defects, a method based on empirical mode decomposition (EMD) and magnetic gradient tensor was studied. In order to filter random noise, EMD was performed to self-adaptively decompose magnetic field signals into a series of intrinsic mode functions (IMFs), and then Hurst exponent was implemented to exclude false modes; The calculation method of magnetic gradient tensor modulus (MGTM) was proposed to obtain precise defect locations according to tensor symmetry; Subsequently, the remote pipeline defect model was built based on the magnetic dipole theory, and the relationship between detection orientation and MGTM was discussed. The experimental results showed that the proposed method could realize high precision and reliable non-contact geomagnetic localization of pipeline defects.
Skip Nav Destination
2018 12th International Pipeline Conference
September 24–28, 2018
Calgary, Alberta, Canada
Conference Sponsors:
- Pipeline Division
ISBN:
978-0-7918-5186-9
PROCEEDINGS PAPER
Non-Contact Geomagnetic Localization of Pipeline Defects Using Empirical Mode Decomposition and Magnetic Gradient Tensor
Tao Zhang,
Tao Zhang
Beijing University of Technology, Beijing, China
Search for other works by this author on:
Xinhua Wang,
Xinhua Wang
Beijing University of Technology, Beijing, China
Search for other works by this author on:
Yingchun Chen,
Yingchun Chen
Beijing University of Technology, Beijing, China
Search for other works by this author on:
Zia Ullah,
Zia Ullah
Beijing University of Technology, Beijing, China
Search for other works by this author on:
Yizhen Zhao
Yizhen Zhao
Beijing University of Technology, Beijing, China
Search for other works by this author on:
Tao Zhang
Beijing University of Technology, Beijing, China
Xinhua Wang
Beijing University of Technology, Beijing, China
Yingchun Chen
Beijing University of Technology, Beijing, China
Zia Ullah
Beijing University of Technology, Beijing, China
Yizhen Zhao
Beijing University of Technology, Beijing, China
Paper No:
IPC2018-78258, V001T03A006; 7 pages
Published Online:
November 6, 2018
Citation
Zhang, T, Wang, X, Chen, Y, Ullah, Z, & Zhao, Y. "Non-Contact Geomagnetic Localization of Pipeline Defects Using Empirical Mode Decomposition and Magnetic Gradient Tensor." Proceedings of the 2018 12th International Pipeline Conference. Volume 1: Pipeline and Facilities Integrity. Calgary, Alberta, Canada. September 24–28, 2018. V001T03A006. ASME. https://doi.org/10.1115/IPC2018-78258
Download citation file:
25
Views
0
Citations
Related Proceedings Papers
Related Articles
Non-Contact Measurement of Residual Magnetization Caused by Plastic Deformation of Steel
ASME J Nondestructive Evaluation (August,2020)
In-Line Nondestructive Inspection of Mechanical Dents on Pipelines With Guided Shear Horizontal Wave Electromagnetic Acoustic Transducers
J. Pressure Vessel Technol (August,2005)
Non-Gaussian Narrow-Band Random Fatigue
J. Appl. Mech (May,2002)
Related Chapters
Introduction
Computer Vision for Structural Dynamics and Health Monitoring
Geohazard Management
Pipeline Geo-Environmental Design and Geohazard Management
Better Risk Management for Underground Pipelines and Tunnels Using Sound Geotechnical Interpretation
Geological Engineering: Proceedings of the 1 st International Conference (ICGE 2007)