Compact Multi-Element Ultrasonic Transducer for Inspecting Split Pins in Nuclear Power Plants

A compact five-element integrated ultrasonic transducer was designed and manufactured for the inspection of defects in split pins control rod guide tubes nuclear power plants. The consists three types elements to detect cracks entire volume pins. In design, two main factors were investigated: coupling confined space measurement sensitivity. experimental results demonstrated that developed has good acoustic performance defect response capabilities can 10 mm × 2 0.5 notches areas This work provides a foundation applications site inspections.