Next Article in Journal
An Efficient Estimator for Moving Target Localization Using Multi-Station Dual-Frequency Radars
Previous Article in Journal
Fault Diagnosis of Internal Combustion Engine Valve Clearance Using the Impact Commencement Detection Method
Article Menu
Issue 12 (December) cover image

Export Article

Open AccessArticle
Sensors 2017, 17(12), 2911; https://doi.org/10.3390/s17122911

An Online MFL Sensing Method for Steel Pipe Based on the Magnetic Guiding Effect

1
School of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065, China
2
School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
3
School of Electrical and Electronic Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
*
Author to whom correspondence should be addressed.
Received: 7 November 2017 / Revised: 6 December 2017 / Accepted: 12 December 2017 / Published: 15 December 2017
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [2750 KB, uploaded 15 December 2017]   |  

Abstract

In order to improve the sensitivity of online magnetic flux leakage (MFL) testing for steel pipe, a sensing method based on the magnetic guiding effect is proposed and investigated in this paper. Compared to the conventional contact sensing method using a non-ferromagnetic support, the proposed method creatively utilizes a ferromagnetic one to guide more magnetic flux to leak out. Based on Hopkinson’s law, the principle of the magnetic guiding effect of the ferromagnetic support is theoretically illustrated. Then, numerical simulations are conducted to investigate the MFL changes influenced by the ferromagnetic support. Finally, the probe based on the proposed method is designed and developed, and online MFL experiments are performed to validate the feasibility of the proposed method. Online tests show that the proposed sensing method can greatly improve the MFL sensitivity. View Full-Text
Keywords: steel pipe; online MFL (magnetic flux leakage) testing; non-ferromagnetic and ferromagnetic supports; magnetic guiding effect steel pipe; online MFL (magnetic flux leakage) testing; non-ferromagnetic and ferromagnetic supports; magnetic guiding effect
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Wu, J.; Fang, H.; Huang, X.; Xia, H.; Kang, Y.; Tang, C. An Online MFL Sensing Method for Steel Pipe Based on the Magnetic Guiding Effect. Sensors 2017, 17, 2911.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top