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Module 7. Maintenance practices

What non-destructive testing method requires little or no part preparation, is used to detect surface or near-surface defects in most metals, and may also be used to separate metals or alloys and their heat-treat conditions?

  • Eddy current inspection.
  • Magnetic particle inspection.
  • Ultrasonic pulse inspection.

Jordi asking:

isnt eddy current inspecction method only for internal cracks?Why does it mention here that it is used to detect"surface and nearsurface"?

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