Eddy Current Test (Leaving Cert Engineering): Flashcards
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Eddy current testing
Eddy current testing
NDT using electromagnetic induction to detect flaws in non-ferrous materials
Materials for eddy current testing
Materials for eddy current testing
Non-ferrous materials (no iron)
Non-ferrous material examples
Non-ferrous material examples
Aluminium, copper, zinc
Eddy currents
Eddy currents
Circular electrical currents induced in conductive material by magnetic field
Eddy current test equipment
Eddy current test equipment
Iron rod, copper coil, oscilloscope
Creating magnetic field in test
Creating magnetic field in test
Current through coil makes iron rod an electromagnet
How defects are detected
How defects are detected
Flaws in material cause fluctuations in magnetic field shown on oscilloscope
Eddy current vs magnetic particle
Eddy current vs magnetic particle
Works on non-ferrous materials
Eddy current contact requirement
Eddy current contact requirement
Non-contact testing
Speed of eddy current results
Speed of eddy current results
Immediate feedback
Aerospace application
Aerospace application
Testing aluminium aircraft components
Conductive material limitation
Conductive material limitation
Only works on materials that conduct electricity
Depth limitation
Depth limitation
Best for surface and near-surface defects
Operator requirement
Operator requirement
Skilled operators needed to interpret readings