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Phased Array Ultrasonic Testing (PAUT) is an advanced non‑destructive testing (NDT) technique that uses electronically controlled ultrasonic beams to detect internal flaws with exceptional precision. This method delivers faster, safer, and more accurate inspections for welds, pipelines, and critical industrial components.
What is PAUT?
PAUT uses multi‑element ultrasonic probes that fire in a programmed sequence (“phasing”). This allows the ultrasonic beam to be electronically steered, focused, and scanned without physically moving the probe, producing real‑time, high‑resolution images ideal for flaw detection.

Key Technical Features

Multi‑element array transducers

Multi‑element array transducers

Electronic beam steering (0°–90°) for complex geometries

Electronic beam steering (0°–90°) for complex geometries

Volumetric coverage with cross‑section imaging

Volumetric coverage with cross‑section imaging

Full digital data recording for traceability

Full digital data recording for traceability

What PAUT Detects
PAUT accurately identifies:
Cracks

Cracks

Lack of fusion

Lack of fusion

Porosity

Porosity

Corrosion

Corrosion

Weld defects in pipes, pressure vessels, and structures

Weld defects in pipes, pressure vessels, and structures

Weld defects in pipes, pressure vessels, and structures

Weld defects in pipes, pressure vessels, and structures

Key Benefits of PAUT

Higher Accuracy

Higher Accuracy

Provides superior precision compared to conventional UT, reducing the risk of missed defects.

Faster Inspections

Faster Inspections

Electronically controlled beams eliminate manual probe repositioning, speeding up the inspection process.

Safe, Radiation‑Free Method

Safe, Radiation‑Free Method

Unlike radiography, PAUT requires no radiation, allowing other site operations to continue safely during inspection.

Real‑Time Imaging

Real‑Time Imaging

Enables immediate review through detailed cross‑section imaging for faster decision‑making.

Ideal for Complex Geometries

Ideal for Complex Geometries

Effectively inspects curved surfaces, difficult welds, and limited-access areas.

Industries Using PAUT

Oil & Gas

Oil & Gas

Pipelines, tanks, pressure vessels.

Power Generation

Power Generation

Turbines, boilers

Marine & Offshore

Marine & Offshore

Hull welding

Aerospace

Aerospace

Composites, landing gear, structural components

Manufacturing & Automotive

Manufacturing & Automotive

Weld quality control

Common Inspection Tasks

Weld inspection

Weld inspection

Corrosion mapping

Corrosion mapping

Fitness‑for‑service assessments

Fitness‑for‑service assessments

Structural integrity checks

Structural integrity checks

Nozzle, flange & bolt inspections

Nozzle, flange & bolt inspections

How the PAUT Process Works

Preparation

Preparation

Surface cleaning, instrument calibration, and selection of probe and wedge angles.

Electronic Scanning

Electronic Scanning

Multi‑angle ultrasonic beams sweep through the material to obtain volumetric coverage.

Real‑Time Imaging

Real‑Time Imaging

Inspectors assess S‑scans, A‑scans, and C‑scans instantly during the inspection.

Defect Validation

Defect Validation

Flaw sizing, characterization, and positional verification.

Reporting

Reporting

Detailed, auditable digital inspection reports with stored scan data.

Why Choose Our PAUT Services

Certified NDT inspectors (ASNT / ISO standards)

Certified NDT inspectors (ASNT / ISO standards)

High‑resolution digital imaging and reporting

High‑resolution digital imaging and reporting

Mobile onsite inspection capability

Mobile onsite inspection capability

Fast turnaround time

Fast turnaround time

Suitable for both in‑service inspections and new fabrication testing

Suitable for both in‑service inspections and new fabrication testing

Contact us at NIsales@setsco.com to discuss your project requirements.
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