Phased Array Ultrasonic Testing (PAUT) is an advanced non-destructive testing technique that uses multiple ultrasonic probe elements to create a steerable, focused beam capable of detecting internal flaws with high accuracy. Unlike conventional UT, PAUT enables full control over beam direction, angle, and focus by adjusting the timing of individual probe elements — a technique known as electronic beam steering.
The ultrasonic beam is swept through the material like a searchlight, and data from various angles is reconstructed into a visual cross-sectional image of the test object. This allows technicians to evaluate the integrity of welds, complex geometries, and critical components with enhanced precision
Benefits of PAUT
- Produces high-resolution imaging for better flaw characterization and sizing
- Offers greater coverage from fixed probe positions, reducing scan time
- Provides enhanced repeatability and reliability compared to manual UT
- Effective on components with complex shapes or limited access
- Minimizes human error through automated data capture and interpretation
Applications of PAUT:
- Weld inspection and defect sizing
- Corrosion mapping in pressure vessels and pipelines
- Inspection of nozzles, elbows, and other complex geometries
- Detection and monitoring of critical discontinuities
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