What is Phase array ultrasonic testing (PAUT)
Phased array is an advanced pulse-echo technique utilizing multiple transducers and time-delays to generate the ultrasonic sound beam in a desired angle and focus. This technique has been proven in industrial today and wide range of application.
How does it work?
The PA probe consists of many small ultrasonic transducers, each of which can be pulsed independently. By varying the timing, for instance by making the pulse from each transducer progressively delayed going up the line, a pattern of constructive interference is set up that results in radiating a quasi-plane ultrasonic beam at a set angle depending on the progressive time delay.
Application of Phase array ultrasonic testing (PAUT)
- Weld inspection of complex geometries
- Weld inspection of vessels, pipelines and plates
- Corrosion mapping and composite inspection
- TOFD Weld inspection
Problem detection
- Cracks in material and weld joint
- Lamination in steel plate
- Incomplete penetration of welding
