Magnetic Particle Inspection Level 2 Practice Exam

Discontinuities caused by pipe, inclusions, or blowholes in the original ingot and appearing flat are referred to as?

1. Seams

2. Laminations

3. Cracks

4. Laps

The correct answer is: Laminations

The term "laminations" refers to discontinuities that occur due to the presence of non-metallic inclusions, such as pipes or blowholes, within the original ingot material. These discontinuities appear as flat, elongated defects that can significantly impact the integrity and mechanical properties of the material. Laminations result from improper manufacturing processes and can create weak spots that are crucial to identify during inspections, as they can lead to failures under stress. In the context of magnetic particle inspection, recognizing laminations is vital. This is because they can often be mistaken for other types of defects, but their specific characteristics—like being flat and typically parallel to the surface—allow for better differentiation. Thus, understanding and identifying laminations ensure that materials meet safety and performance standards in various applications.