PAUT Overview

Phased Array Ultrasonic Testing (PAUT), also known as phased array UT, is an advanced non-destructive inspection technique that uses a set of ultrasonic testing (UT) probes made up of numerous small elements. Each of these is pulsed individually with computer-calculated timing to create the phased aspect of the process, while the array refers to the multiple elements that make up a PAUT system.

The beam from a phased array probe can be focused and electronically swept across an inspection piece without moving the probe itself. This differs from single element probes (also known as monolithic probes). These more conventional probes need to be physically moved or turned to cover larger areas, which is not required for PAUT.

Phased array ultrasonic testing is based on the principles of wave physics, which also have applications in areas including optics and electromagnetic antennae.

PAUT Service applications

Phased arrays can perform any job done by conventional ultrasonics and are used for a wide range of inspection and measurement applications, including those for medical imaging and industrial non-destructive testing (NDT).

Ideal for non-invasive material examinations, for finding flaws in welds and assessing the quality of rivets, PAUT can also detect cracks, voids and pits caused by corrosion. The technology can measure material and coating thickness, detect changes in material properties and inspect joints and interfaces, including adhesive mapping.

As an advanced NDT method, PAUT is used to detect discontinuities to determine component quality, making it ideal for:

• Weld Inspections

• Thickness Measurements

• Corrosion Inspection

• PAUT Validation/Demonstration Blocks

• Inspection of Rolling Stock Wheels and Axles

• PAUT and TOFD Standard Calibration Blocks

• Pressure Vessels