Magnetic Particle Inspection 

Magnetic Particle Inspection (MPI or MT) is an extension of visual inspection. This critical technique for non-destructive testing (NDT) is used for the detection of surface and near-surface flaws (discontinuities) in ferromagnetic materials.


MT electrically induces magnetic fields in ferrous material to create a highly sensitive inspection method. This method can detect miniscule cracks and slightly subsurface discontinuities that can lead to part fatigue and eventually part failure.

Africana NDT performs this fast and reliable inspection method on castings, forgings, weldments, automotive parts, fasteners, and critical component parts.

To assure compliance and conformance to customer specification requirements, we offer:

General Electric P3C-AL-0012 – Magnetic Particle Testing Acceptance Standard for Steam Turbine Stationary Components
General Electric P3C-AL-0201 – Magnetic Particle Testing Acceptance Standard for Steam Turbine and Generator Studs, Bolts, and Nuts (Hardware).   

Advantages of the Magnetic Particle Testing

  • It is quick and relatively uncomplicated
  • It gives immediate indications of defects
  • It shows surface and near surface defects, and these are the most serious ones as they concentrate stresses
  • The method can be adapted for site or workshop use
  • It is inexpensive compared to radiography
  • Large or small objects can be examined
  • Elaborate pre-cleaning is not necessary

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