Applications:
- High-rate ultrasonic inspection of tubes.
- Dimension and soundness checks.
Principle:
- Encircling phased-arrav ultrasonic search unit.
- Beam rotated hy electronic scanning system.
- Mechanical movement of tube- limited to travel in one direction.
- Focusing and deflection of beam (in radial plane) programmable by signal acquisition electronics.
- Focusing and mechanical deflection of beam (in axial plane) by mirror system.
Encircling phased-array search unit
Profile of a tube with flats
Diagram of ultrasonic search unit
MUSTANG acquisition system:
- Ability to drive search units with up to 128 elements.
- Real-time digital processing system.
- Modular system allowing several probes to be driven.
- Search unit configuration varied by changing mirror.
Map of a 50 µm deep notch
Performance:
Examples of applications:
- Checking soundness of 10 mm diameter tubes traveling at 16m/min with a beam rotating at 10 000 rpm
- Dimension check: acquisition of 170 profiles per second.
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