TECHNICAL NOTE| Enhancing high-temperature PAUT and TOFD inspection for weld root erosion

Key Deliverables

• Significant beam steering error created excessive wedge noise in the phased array inspection, making interpretation and sizing difficult at elevated temperatures.

• Eroded depth of the weld root, even with intricate geometry, could be accurately determined within ±1 mm of the benchmark data with HotSense TOFD, from ambient to 300 °C

• TOFD signal strength and clarity remain relatively unchanged across the temperature range making sizing accuracy stable.