Magnetic Particle Inspection Level 2 Practice Exam

What is the main concern when performing multiple shots in magnetic particle inspection?

1. Over-saturation of the part

2. Demagnetization of the part

3. Contamination of the particle medium

4. All of the above

The correct answer is: All of the above

When performing multiple shots in magnetic particle inspection, the primary concern encompasses several factors that can impact the effectiveness of the inspection process. Firstly, over-saturation of the part can occur if excessive magnetic particle application happens, which might obscure fine defects due to a thick layer of particles. This can make it difficult to visualize indications effectively, reducing the reliability of the inspection results. Demagnetization of the part is another critical concern as it can negatively affect the magnetic field necessary for the inspection. If a component becomes demagnetized during the inspection process, it can lead to missed indications or false negatives, as there may not be an adequate magnetic field to reveal surface or near-surface defects. Contamination of the particle medium also plays a significant role, as the presence of unwanted particles or residues can interfere with the clarity and effectiveness of the magnetic particles used in the inspection. Such contamination can lead to incorrect interpretations of the inspection results, as it may mask genuine defects. Given that all these issues—not just one—pose significant risks in the context of multiple shots in magnetic particle inspection, the concern is comprehensive and indeed includes all of the listed factors. Thus, recognizing the collective impact of over-saturation, demagnetization, and contamination is crucial for maintaining the integrity