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Magnetic Particle Testing (MPT) is a non-destructive testing method used
to detect surface and slightly subsurface flaws in ferromagnetic materials such as
steel and iron. The process involves magnetising the material and then applying fine magnetic
particles. If there are any cracks or defects, the magnetic field will leak at those points,
causing the particles to gather and form visible indications. This method is quick, reliable,
and commonly used in weld inspections and structural integrity checks.
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