Limitations
- Not recommended for short sections or small items.
- Locations of weld repairs and localised grinding can cause spurious indications.
- Crack length needs to be longer than 5 mm. Multiple defects reduce the ability to estimate defect depth.
- Equipment more bulky than for MT and indications may be more difficult to interpret.
The probability of detection and false detection rate is generally good, but it is application dependent.
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