During MPI, what is one of the main roles of the inspector?

The primary role of the inspector during Magnetic Particle Inspection (MPI) is to interpret indications and assess the relevance of any defects that may be identified during the inspection process. This step is crucial because, while the application of magnetic particles and preparation of the materials are essential aspects of MPI, the inspector's expertise lies in analyzing the results obtained from the inspection.

The inspector's responsibilities involve understanding the significance of the indications revealed by the magnetic particles, which can indicate flaws such as cracks, laps, or other surface defects in the material being inspected. The inspector uses their knowledge of the material properties, the manufacturing process, and the service conditions to determine whether the detected indications are indeed relevant to the integrity of the component.

By accurately interpreting the indications, the inspector can make informed decisions regarding the safety and reliability of components, guiding necessary repairs, maintenance, or rejection of materials. This assessment directly impacts quality control and the overall integrity of components used in critical applications, such as aerospace, automotive, and structural engineering.