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15 cards from this deck
NDT using electromagnetic induction to detect flaws in non-ferrous materials
Non-ferrous materials (no iron)
Aluminium, copper, zinc
Small circular electrical currents induced in conductive material by magnetic field
Iron rod, copper coil, oscilloscope
Electrical current through coil creates electromagnet
Fluctuations in magnetic field shown on oscilloscope
Non-contact (probe doesn't need to touch surface)
Immediate feedback
Testing aluminium aircraft components
Quality control of copper conductors
Material must conduct electricity
Best for surface and near-surface defects
Requires training to interpret oscilloscope readings
Paint, coatings, contamination
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