Phased array transducers contain multiple small elements (typically 16 to 64) that can be pulsed independently with controlled time delays. By varying the delay pattern (focal law), the beam can be steered to different angles, focused at different depths, and scanned electronically — all without physically moving the transducer. This produces sectorial (S-scan) and linear (L-scan) images in real time.
PAUT provides faster scanning speeds, greater coverage from a single probe position, real-time imaging, permanent encoded data records, and improved probability of detection compared to conventional UT. Encoded scans create a permanent record that can be reviewed, re-analyzed, and compared to future inspections for degradation trending.
Weld examination (new construction and in-service), corrosion mapping, dissimilar metal weld inspection, complex geometry components, turbine blade and disk inspection, composite material evaluation, and thickness mapping with C-scan presentation.
Performed per ASME Section V Article 4, ASME Code Case 2235 (UT in lieu of RT), AWS D1.1, API 1104, and ASTM E2700. Technicians qualified per SNT-TC-1A with specific PAUT training and certification.
Advanced multi-element ultrasonic inspection for superior defect detection.