What are the main components of a Magnetic Particle Testing setup?

The main components of a Magnetic Particle Testing (MPT) setup include a power supply, magnetizing equipment, viewing medium, and magnetic particles.

The power supply provides the necessary electrical current to generate a magnetic field when using electromagnets. This magnetic field is crucial for inducing magnetism into the test specimen, which allows for the detection of surface and near-surface flaws. Magnetizing equipment is used to create this magnetic field, and it can either be permanent magnets or electromagnets depending on the application and the nature of the testing.

The viewing medium serves as a contrast agent that enhances the visibility of the magnetic particles when they accumulate at defect locations. This is crucial for effective interpretation of the test results. The magnetic particles themselves are made from iron filings or other metallic materials that can be magnetized; they are applied to the surface of the test part to reveal any defects through the formation of indications.

This combination of components is essential for conducting effective magnetic particle inspections to identify flaws in metallic materials. Other options listed contain unrelated testing components or methods that do not pertain to magnetic particle testing specifically.