What type of wear can MPI detect?

The ability of Magnetic Particle Inspection (MPI) to detect specific types of wear and defects is crucial for the integrity of various materials, particularly ferromagnetic ones. MPI is specifically designed to identify surface or near-surface discontinuities. This includes cracks, which can compromise the structural integrity of a component, and porosity, which indicates voids or air pockets within the material that could weaken its strength.

Cracking is a critical defect that can occur due to various stresses or material fatigue, and if undetected, it can lead to catastrophic failures. Similarly, porosity can compromise the integrity of a material by creating weak points where stress concentrates, potentially leading to failure.

In contrast, while other types of wear or damage, such as fatigue and heat damage, are important in material analysis, they typically do not fall within the detection capabilities of MPI. Fatigue often requires different testing techniques, such as ultrasonic testing or visual inspections, to identify subsurface defects that may not be accessible with magnetic particle methods. Additionally, corrosion and other forms of wear, such as oxidation and thinning, are generally detected using other non-destructive testing methods, as they may not always present as magnetic anomalies.

Thus, the proficiency of MPI in identifying cracks, porosity,