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  2. Magnetic flux leakage - Wikipedia

    en.wikipedia.org/wiki/Magnetic_flux_leakage

    Magnetic Flux Leakage Principle [1] Magnetic flux leakage (TFI or Transverse Field Inspection technology) is a magnetic method of nondestructive testing to detect corrosion and pitting in steel structures, for instance: pipelines and storage tanks. The basic principle is that the magnetic field "leaks" from the steel at areas where there is ...

  3. Flux linkage - Wikipedia

    en.wikipedia.org/wiki/Flux_linkage

    Thus, for a typical inductance (a coil of conducting wire), the flux linkage is equivalent to magnetic flux, which is the total magnetic field passing through the surface (i.e., normal to that surface) formed by a closed conducting loop coil and is determined by the number of turns in the coil and the magnetic field, i.e.,

  4. Magnetic particle inspection - Wikipedia

    en.wikipedia.org/wiki/Magnetic_particle_inspection

    The aid in particle mobility is caused by the half-wave pulsating current waveform. In a typical mag pulse of 0.5 seconds there are 15 pulses of current using HWDC. This gives the particle more of an opportunity to come in contact with areas of magnetic flux leakage. An AC electromagnet is the preferred method for find surface breaking indication.

  5. Leakage inductance - Wikipedia

    en.wikipedia.org/wiki/Leakage_inductance

    The magnetic circuit's flux that does not interlink both windings is the leakage flux corresponding to primary leakage inductance L P σ and secondary leakage inductance L S σ. Referring to Fig. 1, these leakage inductances are defined in terms of transformer winding open-circuit inductances and associated coupling coefficient or coupling ...

  6. Magnetic circuit - Wikipedia

    en.wikipedia.org/wiki/Magnetic_circuit

    B L – leakage flux; magnetic field lines which don't follow complete magnetic circuit L – average length of the magnetic circuit. It is the sum of the length L core in the iron core pieces and the length L gap in the air gaps G. A magnetic circuit is made up of one or more closed loop paths containing a magnetic flux.

  7. Electromagnetic testing - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_testing

    Magnetic flux leakage testing (MFL) is also used for nondestructive testing (NDT) of steel tubes and pipes. At present RFT is more commonly used in small diameter tubes and MFL in larger diameter pipes over long travel distances.

  8. Magnetic flux - Wikipedia

    en.wikipedia.org/wiki/Magnetic_flux

    In physics, specifically electromagnetism, the magnetic flux through a surface is the surface integral of the normal component of the magnetic field B over that surface. It is usually denoted Φ or Φ B. The SI unit of magnetic flux is the weber (Wb; in derived units, volt–seconds or V⋅s), and the CGS unit is the maxwell. [1]

  9. Leakage (electronics) - Wikipedia

    en.wikipedia.org/wiki/Leakage_(electronics)

    Leakage may also mean an unwanted transfer of energy from one circuit to another. For example, magnetic lines of flux will not be entirely confined within the core of a power transformer; another circuit may couple to the transformer and receive some leaked energy at the frequency of the electric mains, which will cause audible hum in an audio application.