Results 11 to 20 of about 2,327,852 (287)

The effects of remanent magnetization on magnetic flux leakage signals [PDF]

open access: yesNDT & E International, 1997
The Magnetic Flux Leakage (MFL)Technique is the most commonly used technique to inspect large diameter transmission pipelines [1–5]. A typical MFL inspection system uses permanent magnets to apply an axially oriented magnetic field to the ferromagnetic pipe material.
Nestleroth, J. Bruce, Davis, Richard
core   +5 more sources

Investigation of and Components of the Magnetic Flux Leakage in Ferromagnetic Laminated Sample [PDF]

open access: yesAdvances in Materials Science and Engineering, 2013
The magnetic flux leakage (MFL) technique is most commonly used for crack detection from iron bars, laminated sheets, and steel tubes of ferromagnetic nature.
Mustafa Göktepe
doaj   +2 more sources

A Review of Magnetic Flux Leakage Nondestructive Testing. [PDF]

open access: yesMaterials (Basel), 2022
Magnetic flux leakage (MFL) testing is a widely used nondestructive testing (NDT) method for the inspection of ferromagnetic materials. This review paper presents the basic principles of MFL testing and summarizes the recent advances in MFL. An analytical expression for the leakage magnetic field based on the 3D magnetic dipole model is provided. Based
Feng B, Wu J, Tu H, Tang J, Kang Y.
europepmc   +3 more sources

Open magnetic flux and magnetic flux closure during sawtooth events [PDF]

open access: yes, 2008
We use IMAGE-FUV observations of the polar aurora and measurements of the ionospheric convection from the SuperDARN radar network to study several sawtooth events previously reported in the literature.
Hubert, B.   +4 more
core   +6 more sources

Miniature mobile sensor platforms for condition monitoring of structures [PDF]

open access: yes, 2009
In this paper, a wireless, multisensor inspection system for nondestructive evaluation (NDE) of materials is described. The sensor configuration enables two inspection modes-magnetic (flux leakage and eddy current) and noncontact ultrasound.
Chan, C.C.   +6 more
core   +4 more sources

Frequency Dependent Model of Leakage Inductance for Magnetic Components [PDF]

open access: yes, 2012
Theoretical methods for the calculation of winding losses with respect to frequency have been well documented, but the variation in leakage inductance of magnetic components due to frequency has been less well addressed. In this paper Dowell’s well-known
Wilcock, Reuben   +5 more
core   +2 more sources

Design and optimization of a mechanical variable-leakage-flux interior permanent magnet machine with auxiliary rotatable magnetic poles

open access: yesCES Transactions on Electrical Machines and Systems, 2021
A novel mechanical variable-leakage-flux interior permanent magnet machine (MVLF-IPMM) is proposed for electric vehicles (EVs) in this paper, which employs a mechanical flux-regulating device and auxiliary rotatable magnetic poles.
Tongze Sun   +4 more
doaj   +1 more source

Detailed Study of Closed Stator Slots for a Direct-Driven Synchronous Permanent Magnet Linear Wave Energy Converter

open access: yesMachines, 2014
The aim of this paper is to analyze how a permanent magnet linear generator for wave power behaves when the stator slots are closed. The usual design of stator geometry is to use open slots to maintain a low magnetic leakage flux between the stator teeth.
Erik Lejerskog, Mats Leijon
doaj   +1 more source

3‐D magnetic equivalent circuit model for a coreless axial flux permanent‐magnet synchronous generator

open access: yesIET Electric Power Applications, 2021
In coreless axial flux permanent magnet synchronous generators (AFPMSGs), magnetic leakage and fringing effect is significant due to the large air gap and increases the difficulty in magnetic field calculation.
Yunpeng Zhang, Yiming Wang, Shuning Gao
doaj   +1 more source

Research on the Forward Solving Method of Defect Leakage Signal Based on the Non-Uniform Magnetic Charge Model

open access: yesSensors, 2023
Pipeline magnetic flux leakage inspection is widely used in the evaluation of material defect detection due to its advantages of having no coupling agent and easy implementation.
Pengfei Gao   +3 more
doaj   +1 more source

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