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  2. Magnetic particle inspection - Wikipedia

    en.wikipedia.org/wiki/Magnetic_particle_inspection

    EN 1369, Founding - Magnetic particle inspection; EN 10228-1, Non-destructive testing of steel forgings - Part 1: Magnetic particle inspection; American Society of Testing and Materials (ASTM) ASTM E1444/E1444M Standard Practice for Magnetic Particle Testing; ASTM A 275/A 275M Test Method for Magnetic Particle Examination of Steel Forgings

  3. Evans balance - Wikipedia

    en.wikipedia.org/wiki/Evans_balance

    An Evans balance, also known as a Johnson Matthey magnetic susceptibility balance, is a scientific instrument used to measure the magnetic susceptibility of solids and liquids. [ 1 ] [ 2 ] Magnetic susceptibility quantifies the extent to which a material becomes magnetized in an applied magnetic field .

  4. Eddy-current testing - Wikipedia

    en.wikipedia.org/wiki/Eddy-current_testing

    In this technique, permeability variations are suppressed by applying a magnetic field. The saturation probes contain conventional eddy current coils and magnets. This inspection is used on partially ferromagnetic materials such as nickel alloys, duplex alloys, and thin-ferromagnetic materials such as ferritic chromium molybdenum stainless steel.

  5. Epstein frame - Wikipedia

    en.wikipedia.org/wiki/Epstein_frame

    The International Standard for the measurement configuration and conditions are defined by the standard IEC 60404-2:2008 Magnetic materials - Part 2: Methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame [1] published by International Electrotechnical Commission.

  6. Alternating current field measurement - Wikipedia

    en.wikipedia.org/wiki/Alternating_Current_Field...

    The ACFM probe induces a uniform alternating current in the area under test and detects magnetic field of the resulting current near the surface. This current is undisturbed if the area is defect free. A crack redirects the current around the ends and faces of the crack.

  7. Magnetic flux leakage - Wikipedia

    en.wikipedia.org/wiki/Magnetic_flux_leakage

    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 corrosion or missing metal.

  8. Hall effect sensor - Wikipedia

    en.wikipedia.org/wiki/Hall_effect_sensor

    Hall effect magnetometers (also called tesla meters or gauss meters) use a Hall probe [23] with a Hall element to measure magnetic fields or inspect materials (such as tubing or pipelines) using the principles of magnetic flux leakage. A Hall probe is a device that uses a calibrated Hall effect sensor to directly measure the strength of a ...

  9. Cover meter - Wikipedia

    en.wikipedia.org/wiki/Cover_Meter

    The pulse-induction method is based on electromagnetic pulse induction technology to detect rebars. 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.

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