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  2. Demagnetizing field - Wikipedia

    en.wikipedia.org/wiki/Demagnetizing_field

    The demagnetizing field, also called the stray field (outside the magnet), is the magnetic field (H-field) [1] generated by the magnetization in a magnet.The total magnetic field in a region containing magnets is the sum of the demagnetizing fields of the magnets and the magnetic field due to any free currents or displacement currents.

  3. Magnetostratigraphy - Wikipedia

    en.wikipedia.org/wiki/Magnetostratigraphy

    The NRM is then stripped away in a stepwise manner using thermal or alternating field demagnetization techniques to reveal the stable magnetic component. Magnetic orientations of all samples from a site are then compared and their average magnetic polarity is determined with directional statistics , most commonly Fisher statistics or ...

  4. Magnetic flux leakage - Wikipedia

    en.wikipedia.org/wiki/Magnetic_flux_leakage

    Magnetic Flux Leakage inline inspection tool (MFL-ILI) has been in use the longest for pipeline inspection. MFL-ILIs detect and assess areas where the pipe wall may be damaged by corrosion. The more advanced versions are referred to as "high-resolution" due to their increased number of sensors.

  5. Magnetic particle inspection - Wikipedia

    en.wikipedia.org/wiki/Magnetic_particle_inspection

    Magnetic yoke is a hand-held device that induces a magnetic field between two poles. Common applications are for outdoor use, remote locations, and weld inspection. The drawback of magnetic yokes is that they only induce a magnetic field between the poles, so large-scale inspections using the device can be time-consuming.

  6. Degaussing - Wikipedia

    en.wikipedia.org/wiki/Degaussing

    USS Jimmy Carter in the magnetic silencing facility at Naval Base Kitsap for her first deperming treatment RMS Queen Mary arriving in New York Harbor, 20 June 1945, with thousands of U.S. soldiers – note the prominent degaussing coil running around the hull Control panel of the MES-device ("Magnetischer Eigenschutz" German: magnetic self-protection) in a German submarine Close-wrap deperming ...

  7. Cover meter - Wikipedia

    en.wikipedia.org/wiki/Cover_Meter

    Coils in the probe are periodically charged by current pulses and thus generate a magnetic field. On the surface of any electrically conductive material which is in the magnetic field eddy currents are produced. They induce a magnetic field in opposite directions. The resulting change in voltage can be utilized for the measurement.

  8. Vibrating-sample magnetometer - Wikipedia

    en.wikipedia.org/wiki/Vibrating-sample_magnetometer

    The alternating magnetic field induces an electric field in the pickup coils of the VSM. [4] The current is proportional to the magnetization of the sample - the greater the induced current, the greater the magnetization. As a result, typically a hysteresis curve will be recorded [5] and from there the magnetic properties of the sample can be ...

  9. Halbach array - Wikipedia

    en.wikipedia.org/wiki/Halbach_array

    However, care has to be taken not to produce a field that exceeds the coercivity of the permanent magnets used, as this can result in demagnetization of the cylinder and the production of a much lower field than intended. [18] [19] Three designs (A) (B) (C) producing uniform magnetic fields within their central air gap

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