Magnetic Particle Testing is used to detect which type of flaw in welds on ferromagnetic materials?

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Multiple Choice

Magnetic Particle Testing is used to detect which type of flaw in welds on ferromagnetic materials?

Explanation:
Magnetic Particle Testing works by magnetizing a ferromagnetic weld and applying fine ferrous particles to the surface. If there’s a flaw, such as a crack or other discontinuity near or at the surface, the magnetic field becomes distorted and leakage fields form at the defect. The particles gather at these leakage fields, creating a visible indication that reveals the flaw’s location and orientation. This approach is especially effective for surface-breaking and near-surface flaws in welds on ferromagnetic materials, whereas deep internal flaws or flaws in nonferromagnetic materials aren’t as readily detected by this method.

Magnetic Particle Testing works by magnetizing a ferromagnetic weld and applying fine ferrous particles to the surface. If there’s a flaw, such as a crack or other discontinuity near or at the surface, the magnetic field becomes distorted and leakage fields form at the defect. The particles gather at these leakage fields, creating a visible indication that reveals the flaw’s location and orientation. This approach is especially effective for surface-breaking and near-surface flaws in welds on ferromagnetic materials, whereas deep internal flaws or flaws in nonferromagnetic materials aren’t as readily detected by this method.

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