Magnetic Particle Testing, or MPT, also known as Magnetic Particle Inspection, is the most commonly used NDT service. It helps detect the flaws in different ferromagnetic materials like iron, nickel, and cobalt. Unlike other methods, it does not need to prepare the degree of the surface. Therefore, the magnetic particle testing procedure is comparatively quick and easy. Impartial Testing uses the MPT method to detect cracks in delicate or shallow surfaces or other defects like lack of sidewall fusion in welds. It works through the thin coating and is a highly portable and rapid testing method. 

Yoke Type

Yoke Type is a versatile magnetic particle testing procedure that uses a 110v AC handheld electromagnetic yoke magnet. It is a white strip of paint in a contrasting background and a magnetic “ink”. While inspecting defects in the surface or subsurface, the magnetic forces’ lines around the fault will start deforming.

Prode Type 

Prods type in magnetic particle testing leads to induction in a circular magnetic field by sending a high amperage (1000A typically) magnetized current through the metal on which Testing. It leads to arcing between the electrodes and test surface. It helps in finding the defects with magnetic particles.