Phased Array Ultrasonic Testing (PAUT)

An advanced NDT technique that uses multiple ultrasonic elements and sophisticated software to generate highly detailed images of a component's internal structure.

Phased Array Ultrasonic Testing (PAUT)

Phased Array Ultrasonic Testing (PAUT) is an advanced non-destructive testing (NDT) technique that uses multiple ultrasonic elements and sophisticated software to generate highly detailed images of a component's internal structure. By electronically controlling and steering ultrasonic beams, PAUT provides rapid, accurate, and reliable inspection of welds, materials, and critical assets without causing damage.

Unlike conventional ultrasonic testing, PAUT can inspect a wide range of angles and depths from a single probe position, delivering enhanced defect detection capabilities and comprehensive inspection coverage. The technology produces real-time visual images that enable inspectors to accurately size, locate, and characterise discontinuities, improving confidence in inspection results. The angles and type of beam sets are modelled using programmes such as NDT setup builder prior to creating the Phased Array setups.

PAUT is widely used across industries including nuclear, oil and gas, petrochemical, power generation, manufacturing, aerospace, and construction, where asset integrity and operational reliability are critical.

Benefits of Phased Array Ultrasonic Testing

  • Enhanced Defect Detection
    Capable of identifying and sizing defects with a high degree of accuracy.
  • Comprehensive Coverage
    Multiple inspection angles can be achieved from a single probe position, reducing inspection time.
  • Real-Time Imaging
    Provides detailed visual representations of defects for improved assessment and reporting.
  • Improved Reliability
    Advanced imaging technology reduces the likelihood of missed indications.
  • Reduced Downtime
    Faster inspections help minimise disruption to operations and maintenance schedules.
  • Permanent Digital Records
    Inspection data can be stored, reviewed, and analysed for future reference and trending.
  • Cost-Effective Solution
    Increased efficiency and inspection coverage can reduce overall inspection costs.
  • Safe and Non-Intrusive
    Requires no radiation source, allowing inspections to be performed without the restrictions associated with radiography.
PAUT offers significant advantages over traditional inspection methods, making it one of the most effective techniques for detecting and evaluating internal defects. By providing accurate, repeatable, and fully documented results, PAUT supports informed decision-making and effective asset management.

Defect Detection and Condition Assessment

Phased Array Ultrasonic Testing is highly effective at identifying and characterising internal and surface-breaking discontinuities that may compromise the integrity and reliability of a component.

Common defects detected using PAUT include:

  • Lack of fusion
  • Lack of penetration
  • Cracking and fatigue cracking
  • Stress corrosion cracking
  • Slag inclusions
  • Porosity
  • Laminations
  • Hydrogen-induced cracking
  • Volumetric defects
  • Corrosion and wall loss
  • Manufacturing defects
  • Service-induced damage

The detailed imaging capabilities of PAUT allow inspectors to accurately determine the size, depth, orientation, and location of defects. This information enables asset owners to assess the severity of indications, prioritise maintenance activities, and make informed decisions during in-service inspections.

Early defect detection helps prevent costly failures, reduce unplanned downtime, and maintain the safe operation of critical equipment.

Why Choose InCon for Phased Array Ultrasonic Testing?

At InCon, we combine advanced inspection technology with highly skilled personnel to deliver accurate, reliable, and cost-effective Phased Array Ultrasonic Testing solutions.

Our team of experienced NDT technicians hold recognised PCN certification, demonstrating competence to internationally recognised standards and ensuring inspections are carried out with the highest levels of professionalism and technical expertise.

To provide the most effective inspection solutions, we invest in the latest ultrasonic inspection technology, utilising advanced PAUT equipment capable of producing high-resolution imaging and precise defect characterisation. Our state-of-the-art systems enable efficient inspections, comprehensive coverage, and detailed digital reporting, providing clients with confidence in the integrity of their assets.

By combining industry-leading technology with experienced and certified personnel, InCon delivers:

  • Accurate defect detection and sizing
  • High-quality digital inspection data and reporting
  • Efficient inspections with minimal disruption to operations
  • Compliance with industry standards and client specifications
  • Reliable support for both new construction and in-service inspection programmes
  • Tailored inspection solutions to meet specific asset integrity requirements

Whether supporting fabrication projects, shutdown activities, or ongoing asset integrity programmes, InCon provides dependable inspection services that help maximise safety, reliability, and operational performance.

Time of Flight Diffraction (TOFD)

In addition to Phased Array Ultrasonic Testing, InCon also offers Time of Flight Diffraction (TOFD) inspections, providing an additional advanced ultrasonic technique for the detection and sizing of defects.

TOFD uses diffracted ultrasonic signals to accurately detect and measure imperfections within a component, offering excellent sizing capability and a high probability of detection. The technique is particularly effective for weld inspections and is widely recognised for its accuracy, repeatability, and ability to provide permanent digital records.

PAUT and TOFD are often used together to provide a comprehensive inspection solution, combining the detailed imaging capabilities of Phased Array with the accurate sizing and measurement capabilities of TOFD. This complementary approach increases confidence in inspection results and can provide a robust alternative to radiographic testing for many applications.

Key benefits of TOFD include:

  • Accurate through-wall sizing of defects
  • High probability of flaw detection
  • Rapid inspection of welds and critical components
  • Permanent digital inspection records
  • Reduced inspection times compared with some traditional methods
  • No radiation hazards or exclusion zones

By offering both PAUT and TOFD, InCon can deliver comprehensive ultrasonic inspection solutions tailored to the requirements of each project, helping clients maintain asset integrity, meet compliance obligations, and reduce operational risk.