Magnetic flux leakage

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Magnetic flux leakage (MFL) is a magnetic method of nondestructive testing that is used to detect corrosion and pitting in steel structures, most commonly pipelines and storage tanks. (Wikipedia.org)






Conferences related to Magnetic flux leakage

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INTERMAG 2014 - IEEE International Magnetics Conference

Intermag is the premier conference on applied magnetics which allows scientists and engineers from all over to world to meet and discuss novel developments in magnetics, magnetic materials and associated technologies.


2013 6th International Symposium on Computational Intelligence and Design (ISCID)

Computational Intelligence techniques typically include Fuzzy Logic, Evolutionary Computation, Intelligent Agent Systems, Neural Networks, Cellular Automata, Artificial Immune Systems and other similar computational models.


2013 IEEE International Conference on Mechatronics and Automation (ICMA)

The objective of ICMA 2013 is to provide a forum for researchers, educators, engineers, and government officials involved in the general areas of mechatronics, robotics, automation and sensors to disseminate their latest research results and exchange views on the future research directions.


2013 IEEE Symposium on Industrial Electronics & Applications (ISIEA)

The symposium covers the areas of industrial electronics and industrial applications in general, that include areas of electronics engineering and its applications, computer engineering and applications, processing, mechatronics, instrumentation, measurement, and their applications in the humanities & commercial

  • 2012 IEEE Symposium on Industrial Electronics and Applications (ISIEA 2012)

    This annual symposium is to bring together scientists, engineers and postgraduates who work in these fields; to share their ideas and experience. Papers are solicited on recent research results, new developments and technology trends in the field of power electronics, industrial electronics, industrial applications, life-science applications, computer & network applications, measurement systems, business applications and ocean applications related technology.

  • 2011 IEEE Symposium on Industrial Electronics and Applications (ISIEA 2011)

    This annual symposium is to bring together scientists, engineers and postgraduates who work in these fields; to share their ideas and experience. Papers are solicited on recent research results, new developments and technology trends in the field of power electronics, industrial electronics, industrial applications, life-science applications, computer & network applications, measurement systems, business applications and ocean applications related technology.

  • 2010 IEEE Symposium on Industrial Electronics and Applications (ISIEA 2010)

    This annual symposium is to bring together scientists, engineers and postgraduates who work in these fields; to share their ideas and experience. Papers are solicited on recent research results, new developments and technology trends in the field of power electronics, industrial electronics, industrial applications, life-science applications, computer & network applications, measurement systems, business applications and ocean applications related technology.


2013 International Conference on Electrical Machines and Systems (ICEMS)

Main Topics1) PM, DC Machines and Drives2) Power Converters/Inverters3) Induction Machines and Drives4) Synchronous Machines and Drives5) Linear Machines and Magnetic Levitation6) Special Machines and Applications7) Renewable Energy and Related Topics8) Field Analysis and Computational Method9) Motion Control10) Fault and Diagnosis11) Designing, Manufacturing, Testing and Standards12) Transformers and High Voltage Machines13) OthersSpecial Topics1) High Speed Machine and Drives2) Personal Mobility3) EMI/EMC4) High Speed Train5) xEVs and Applications6) In-wheel Motors and Drives7) x-by-wire TechnologySpecial Topics1. High Speed Machine and Drives2. Personal Mobility3. In-wheel Motors and Drives4. x-by-wire Technology5. Electric Propulsion6. High Speed Train

  • 2012 15th International Conference on Electrical Machines and Systems (ICEMS)

    The conference will provide a big opportunity for researchers and professionals from all over the world to present the latest researches and developments and to exchange useful information and experiences in the fields of electrical machines and systems such as motor drive systems, turbine generators, linear machines, transformers, electric vehicles, renewable energy, power converters, etc.

  • 2011 International Conference on Electrical Machines and Systems (ICEMS)

    Electrical machines, power electronics and systems.

  • 2010 International Conference on Electrical Machines and Systems (ICEMS)

    1) Power Converters/Inverters 2) Systems for Renewable Energy 3) Motor Drives 4) PM Machines and DC Machines 5) Induction, Synchronous Machines 6) Transformers and High Voltage Machines 7) Linear Machines 8) Special Machines and Their Applications 9) Field Analysis and optimal Design Technologies 10) Electrical Technologies for the Next Generation Vehicle

  • 2009 International Conference on Electrical Machines and Systems (ICEMS)

    The aims of ICEMS2009 are to provide an opportunity for scientists and experts to present the latest research developments in the field of electrical machines and systems (rotating and other machines, power electronics, motion control, and motor drives) and to exchange useful information and experiences in research, trends and applications.

  • 2008 International Conference on Electrical Machines and Systems (ICEMS)

    The conference is a forum for specialists and engineers engaged in the field of electrical machines and drive systems to exchange their latest achievements and experiences of developments, trends and applications.

  • 2007 International Conference on Electrical Machines and Systems (ICEMS)

    MAIN TOPICS 1) Power Converters/Inverters 2) DC-DC Converters 3) Power Conditioning Systems for Renewable Energy 4) Motor Drives 5) PM Machines and DC Machines 6) Induction, Synchronous Machines 7) Transformers and Reactors 8) High Voltage Machines 9) Field Analysis and Optimal Design Technologies 10) Special Machines and Their Applications SPECIAL TOPICS 1) Status and Progress in Maglev Technology 2) Intelligent Mechatronics for Robotics and Advanced Vehicles (HEV & FCEV)


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Periodicals related to Magnetic flux leakage

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Magnetics, IEEE Transactions on

Science and technology related to the basic physics and engineering of magnetism, magnetic materials, applied magnetics, magnetic devices, and magnetic data storage. The Transactions publishes scholarly articles of archival value as well as tutorial expositions and critical reviews of classical subjects and topics of current interest.



Most published Xplore authors for Magnetic flux leakage

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Xplore Articles related to Magnetic flux leakage

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Electromagnetic shielding for electromagnetic launch

Yanpan Hou; Zhenxiang Liu; Jian-Ming Ouyang; Dong Yang 2012 16th International Symposium on Electromagnetic Launch Technology, 2012

With the basic principle of magnetic circuit, the effect of the permeability and conductivity of the coil electromagnetic launcher (EML)'s shielding material on the launching performance was investigated. The model of the coil EML was set up in Ansoft Maxwell, and the influence of thickness and the structure of the shield on the launching process were analyzed. The results show ...


Design and analysis of the secondary structure for the slot-less tubular permanent magnet linear synchronous motor

Xu Zhen Huang; Qing Long Wang; Li Yi Li; Bo Zhou 2014 17th International Symposium on Electromagnetic Launch Technology, 2014

This paper focuses on the secondary structure of the slot-less tubular permanent magnet linear synchronous motor (TPMLSM). The leakage flux and the magnetic field distribution of the secondary of the motor with the rectangle pole were analyzed firstly. To decrease the big leakage on the axis and improve the usage rate of the iron, the similar V-shaped and U-shaped poles ...


New algorithm for improvement of sizing accuracy of defect depth in MFL type nondestructive testing

Hui Min Kim; Sang Hyeon Im; Ha Jeong Lee; Gwan Soo Park 2016 IEEE Conference on Electromagnetic Field Computation (CEFC), 2016

MFL (Magnetic Flux Leakage) type NDT(Nondestructive testing) has been applied for the highly efficient inspection of defects underground gas pipelines. From the measured sensor signals, it is necessary to decompose or estimate the size and shape of defects for the maintenance of underground pipelines. In the maintenance, the depth estimation is the most important procedure for the management of safety ...


Analytical computation of stator iron losses in interior permanent-magnet synchronous machine

X. Jannot; J. -C. Vannier; A. Kedous-Lebouc; C. Marchand; M. Gabsi; J. Saint-Michel The XIX International Conference on Electrical Machines - ICEM 2010, 2010

The design of an electric machine should be done paying attention to core losses. This paper provides an analytical computation of the stator magnetic flux density distribution in an interior permanent magnet synchronous machine and of the related iron losses. The magnetic flux density waveform in the stator teeth and its 2D distribution in the stator yoke are obtained under ...


Modeling and analysis of the stable power supply based on the magnetic flux leakage transformer

Yuqiu Zhang; Yanfeng Chen; Bo Zhang 2014 International Power Electronics and Application Conference and Exposition, 2014

Magnetic flux leakage transformer (MFLT) is widely used in the stable power supply of electronic equipment. For MFLT, whose characteristics become more complex and nonlinear for its leakage and load, the traditional circuit analysis method of transformer could not describe it accurately. In this paper, a nonlinear-transient field-circuit coupled finite element model is used to simulate the MFLT with special ...


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Educational Resources on Magnetic flux leakage

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eLearning

Electromagnetic shielding for electromagnetic launch

Yanpan Hou; Zhenxiang Liu; Jian-Ming Ouyang; Dong Yang 2012 16th International Symposium on Electromagnetic Launch Technology, 2012

With the basic principle of magnetic circuit, the effect of the permeability and conductivity of the coil electromagnetic launcher (EML)'s shielding material on the launching performance was investigated. The model of the coil EML was set up in Ansoft Maxwell, and the influence of thickness and the structure of the shield on the launching process were analyzed. The results show ...


Design and analysis of the secondary structure for the slot-less tubular permanent magnet linear synchronous motor

Xu Zhen Huang; Qing Long Wang; Li Yi Li; Bo Zhou 2014 17th International Symposium on Electromagnetic Launch Technology, 2014

This paper focuses on the secondary structure of the slot-less tubular permanent magnet linear synchronous motor (TPMLSM). The leakage flux and the magnetic field distribution of the secondary of the motor with the rectangle pole were analyzed firstly. To decrease the big leakage on the axis and improve the usage rate of the iron, the similar V-shaped and U-shaped poles ...


New algorithm for improvement of sizing accuracy of defect depth in MFL type nondestructive testing

Hui Min Kim; Sang Hyeon Im; Ha Jeong Lee; Gwan Soo Park 2016 IEEE Conference on Electromagnetic Field Computation (CEFC), 2016

MFL (Magnetic Flux Leakage) type NDT(Nondestructive testing) has been applied for the highly efficient inspection of defects underground gas pipelines. From the measured sensor signals, it is necessary to decompose or estimate the size and shape of defects for the maintenance of underground pipelines. In the maintenance, the depth estimation is the most important procedure for the management of safety ...


Analytical computation of stator iron losses in interior permanent-magnet synchronous machine

X. Jannot; J. -C. Vannier; A. Kedous-Lebouc; C. Marchand; M. Gabsi; J. Saint-Michel The XIX International Conference on Electrical Machines - ICEM 2010, 2010

The design of an electric machine should be done paying attention to core losses. This paper provides an analytical computation of the stator magnetic flux density distribution in an interior permanent magnet synchronous machine and of the related iron losses. The magnetic flux density waveform in the stator teeth and its 2D distribution in the stator yoke are obtained under ...


Modeling and analysis of the stable power supply based on the magnetic flux leakage transformer

Yuqiu Zhang; Yanfeng Chen; Bo Zhang 2014 International Power Electronics and Application Conference and Exposition, 2014

Magnetic flux leakage transformer (MFLT) is widely used in the stable power supply of electronic equipment. For MFLT, whose characteristics become more complex and nonlinear for its leakage and load, the traditional circuit analysis method of transformer could not describe it accurately. In this paper, a nonlinear-transient field-circuit coupled finite element model is used to simulate the MFLT with special ...


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IEEE-USA E-Books

  • Distributed Windings and Rotating Electric Machinery

    This chapter focuses on a complicated winding arrangement known as a distributed winding, which is often used in rotating electric machinery. In these machines, the goal is to establish a continuously rotating set of north and south poles on the stator, which interact with an equal number of north and south poles on the rotor, to produce uniform torque. The winding function has three important uses. First, it is useful in determining the MMF caused by distributed windings. Second, it is used to determine how much flux links a winding. Third, the winding function is instrumental in calculating winding inductances. The chapter talks about the air-gap magnetomotive force (MMF). It explains the calculation of inductances of distributed windings. The problem of the computation of leakage inductance of a stator winding and the problem of finding the resistance of a distributed winding are considered.

  • Magnetic Leakage in Transformers

    This chapter contains sections titled: Magnetic Leakage at no Load, Voltage Equations and Flux Distribution Under Load, Leakage Inductances, Exciting and Load Components of the Primary Current, An Equivalent Circuit, Effects of the Iron Core and Simplifying Approximations, Problems

  • Magnetics and Magnetic Equivalent Circuits

    This chapter sets forth the background needed to analyze electromagnetic and electromechanical systems. It includes a review of magnetics, particularly magnetostatics. The notion of magnetic equivalent circuits is explored as a fairly accurate technique for the analysis of magnetic systems. The chapter talks about (a) Ampere's law, and the relationship between magnetomotive force (MMF) sources and MMF drops in the form of Kirchhoff's MMF law, (b) the relationship between fluxes going into a common volume or node that is governed by Kirchhoff's flux law, and (c) Ohm's law for magnetic equivalent circuits. A section describes the relationship between the magnetic equivalent circuit and the corresponding electric equivalent circuit, and highlights the concepts of flux linkage and inductance. It explains leakage permeance so as to create a more accurate magnetic model, and the flux path. The final section of the chapter discusses finite element analysis (FEA), another technique for magnetic analysis.

  • HBFEM for Nonlinear Magnetic Field Problems

    This chapter discusses mainly the numerical modeling and analysis of electromagnetic fields in switching power supplies. It uses harmonic balance analysis, combined with the finite element method (FEM), to solve problems arising from non-linear, harmonic, eddy-current and power loss problems of transformers used in switching power supplies. The chapter also discusses the harmonic balance-FEM (HBFEM) model and computed results, compared with experimental results. The harmonic components of current and magnetic flux can help to accurately analyze and design the magnetic core and winding structures, and further determine the power loss and leakage flux in the magnetic system. The numerical model of voltage excitation with a nonlinear magnetic field is more accurate than conventional magnetic field-only analysis. The EM full wave solution can be obtained from HBFEM based numerical computation. To verify the HBFEM based solution, a single-phase direct current (DC)-biased switching transformer with a voltage source driven model is used.

  • Principles of Magnetic-Circuit Computations

    This chapter contains sections titled: Units for Practical Magnetic Calculations, Calculations for Magnetic Paths Wholly in Iron, Illustrative Example of Calculations for Magnetic Structure of Uniform Material and Cross- Sectional Area, Illustrative Examples of Calculations for Magnetic Structure of Uniform Material and Nonuniform Cross-Sectional Area, Occurence of Air Gaps in Ferromagnetic Circuits, Fringing and Leakage Fluxes, Methods of Calculations for Short Air Gaps, Illustrative Example of Calculations for a Simple Ferromagnetic Circuit with a Short Air Gap, Illustrative Examples of Calculations for Series-Parallel Iron and Short Air-Gap Paths, Calculations for Long Air Gaps and for Leakage Flux Paths, Illustrative Example of Calculations of Leakage Flux for the Magnetic Circuit of an Oscillograph, Calculations of the Magnetization Curve of a Direct-Current Dynamo, Problems

  • Bibliography

    This chapter contains sections titled: Theory of Magnetism (Chapter I), Properties of Ferromagnetic Materials (Chapter I), Magnetic Testing (Chapters I, V), Iron-Core Reactors; Transformer Excitation Characteristics; Model Theory (Chapters VI, VII), Thermal Characteristics of Electric Apparatus (Chapter VIII), Textbooks on Transformers, Physical Features of Transformers (Chapter XI), Insulation and Surge Phenomena, Magnetic Flux Distribution and Leakage Impedance (Chapters XII, XIII, XIV), Voltage Regulation, Losses, Rating, and Thermal Characteristics (Chapter XIV), Economy in Power-System Transformer Applications (Chapter XVI), Communication Transformers (Chapters XVII, XVIII, XX), Instrument Transformers (Chapter XIX), Voltage-Regulating Transformers (Chapter XIX), Harmonic Phenomena in Three-Phase Circuits (Chapter XXIII), Unbalanced Conditions in Three-Phase Transformer Banks(Chapter XXIV), Multicircuit Transformers (Chapter XXVII), Phase Transformation; Parallel Operation of Transformers (Chapters XXVIII, XXIX)



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