1. What are the advantages of phased array UT?
Electronic beam steering for multiple angles. Better flaw detection in complex geometries. Real-time imaging capabilities. Faster scanning than conventional UT. Superior for weld inspections.
2. When is eddy current testing preferred?
Detects surface-breaking cracks efficiently. Works through thin coatings. Quantitative depth sizing possible. Portable for field applications. Effective for OD and ID surface flaws.
3. What are the limitations of radiography?
Only detects density changes in path. Limited access for tube bundles. Safety concerns with radiation. Doesn't measure wall thickness. Less effective for planar flaws.
4. How does infrared thermography help?
Identifies hot spots from blockages. Detects refractory damage behind tubes. Surveys large areas quickly. Non-contact method for safety. Modern systems detect <1°C differences.
5. What are emerging NDT technologies?
Guided wave UT for long-range screening. Digital radiography with AI analysis. Microwave testing for sub-surface flaws. Laser ultrasonics for remote sensing. Robotic delivery systems.
