10 April 2017


 April 10, 2017
Category: Blog

Many companies are aware of the importance of magnetic particle inspection, but few really know what goes into this discipline. MPI is a non-destructive testing (NDT) process used for detecting surface and slightly subsurface discontinuities in ferromagnetic materials such as nickel, cobalt, iron and some of their alloys.

In theory, magnetic particle inspection is a rather simple concept. Put simply, it’s a combination of two non-destructive testing methods: magnetic flux leakage testing, and visual testing. Using a bar magnet as an example, which has a magnetic field in and around the magnet. Any place that a magnetic line of force enters or exists around the magnet is called a pole.

The pole where a magnetic line of force exits the magnet is referred to as a north pole, and the pole where the line of force enters is referred to as a south pole. When a bar magnet is broken in the centre of its strength, there will be two complete bar magnets in the end, each with its own magnetic poles on each end of the pieces. Should the magnet be cracked and not entirely broken, a north and south pole will form at the edges of the crack. Magnetic particle inspection will be able to detect any of this.

Trust UltraScan for Expert Magnetic Particle Inspection Solutions

We are a leading quality surveillance service provider offering quality third party QA/QC welding inspection and NDT testing services. We are proud of our long history of service, which dates back to 1982 in the port city of Durban. Today, we service many different and important industries to the South African economy, including marine ship repair, power generation, oil and gas as well as mining, manufacturing and general engineering, to name a few.

Our team brings decades of expertise to the industry. To learn more about us, and find out how we can add value to your business, speak to us today. We look forward to providing you with all the information needed to make an informed business decision.

Get in touch with us for all your None-Destructive Testing and/or QA/QC Inspection requirement