A Look at Magnetic Particle Testing (1)

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A Look at Magnetic Particle Testing
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• Magnetic particle testing (MPT) is a way to test
  ferromagnetic metals like iron, steel, and nickel
  for defects, such as cracks. MPT is often used to
  test pipelines for oil and gas, and is also
  common in the automotive and aerospace
  industries, where equipment is tested to ensure
  proper performance and to prevent potential
  future failures.

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How it Works

• A magnetized metal object will have a magnetic
  field which will be disrupted by a crack, hole or
  other defect. Through magnetic particle testing,
  a defect that lies at the surface or near the
  surface will be made to look more pronounced, so
  that it can be more easily identified and
  addressed.

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Benefits of MPT

• Magnetic particle testing is one of the most
  useful methods of identifying problem areas in
  metals. It also offers these benefits

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Non Destructive

• MPT will not damage the material that is being
  tested. This method is non destructive and will
  not harm the metals being tested.

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Fast and Easy

• The process is straightforward the metal is
  magnetized using specialized equipment and iron
  particles are then applied to the metal. These
  particles will gather in areas where there is a
  disrupted magnetic field. This will very
  obviously show the surface defect, so that even
  if the defect itself is too small to see with the
  naked eye, the clumping of these particles will
  pinpoint where the disruption is.

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Little to No Prep Required

• One of the things that makes this type of
  testing so advantageous is that there's little to
  no preparation required once the metal object
  has been magnetized, the particles are applied
  and any defects in the metal are revealed.
  Depending on the colour of the metal being
  tested, the surface may first be painted white or
  we may apply different types of particles to make
  it easier to identify a defect.

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• Sometimes, the particles may even be coated in a
  fluorescent substance and the object being tested
  will then be viewed under an ultra-violet light,
  making problem areas more apparent.

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• If you have questions about MPT or any other
  type of non destructive testing and how it can be
  applied in your operations, please call us.