top of page
Trispec Services


Phased Array Ultrasonic Testing

Advantages over radiography testing (RT) include:

  • No radiation source, eliminating boundaries and safety concerns

  • Immediate, real-time results

  • Precise location and sizing of defects, including width, length, depth, and overall size/volume

*To learn about the great advantages of utilizing ultrasonic testing, schedule a free presentation and demo with TRISPEC today!


Shear Wave Ultrasonic Testing

Highlights of Shear Wave:

  • Ideal for structural inspection

  • Corrosion detection

  • Instant, accurate results

  • Mitigate safety risks

  • Code-compliant

  • Environmentally safe

Carbon steel and stainless steel in general, however, have excellent sensitivity compared to their penetration depth; therefore, shear wave modes are generated and applied in general ultrasonic tests.

UTSW is generally used in structural and bridge applications, however, it has a variety of benefits in numerous industries. While this method gives you real-time results, the data that is collected is not encoded, therefore it cannot meet certain code requirements. This is when PAUT is best utilized.


Ultrasonic Thickness Testing

Highlights of UT Thickness:

  • Determine precise material thickness

  • Works through any coating

  • Detect metal-loss

  • Spot material lamination

UTT is primarily used for measuring material thickness and identifying general corrosion. This method of inspection can penetrate most forms of coating, including thick fiberglass.



Highlights of Phased Array:

  • Instant, accurate results

  • Minimal inspection time

  • Determine exact depths of flaws

  • Detect surface and sub-surface imperfections

  • Encoded data

  • Mitigate safety risks

  • Code-compliant

  • All-digital data (eliminates boxes of film)

  • Meets API-650 code requirements

    • Now down to 1/4" material

phased array ndt inspetion of 3 inch thck pressure vessel

Compared to other forms of UT, PAUT has several advantages. PAUT can be conducted more efficiently than other forms, often within a fraction of a second. It can easily be used for repeat scans because it has a high degree of repeat-ability. By emitting beams of multiple different angles sequentially, PAUT is able to create detailed and accurate cross-sections of a part. It is also particularly useful in situations where there is less room for mechanical scanning because it’s able to sweep the beam without moving the probe. 

oilfield pipeline phased array inspection

Phased Array Ultrasonic Testing (PAUT) is an advanced nondestructive examination technique that utilizes a set of ultrasonic testing (UT) probes made up of numerous small elements, each of which is pulsed individually with computer-calculated timing. This technique can be used to inspect more complex geometries that are difficult and much slower to inspect with single angle probes. PAUT can be used to inspect almost any material where traditional UT methods have been utilized, and is often used for weld inspections and crack detection. 

phased array ndt inspectio of power plant steam pipe

Shear Wave Ultrasonic Testing (UTSW), also known as "angle beam inspection" is an ultrasonic technique that's great for weld and joint examination. A probe consisting of an ultrasonic transducer with a plastic or Lucite wedge introduces an angled beam into the test area that can be adjusted by the technician. As the probe is moved back and forth along the area under inspection, it can detect discontinuities in the weld based on the refraction of the ultrasonic beam.

Shearwave Testing

Ultrasonic Thickness Testing (UTT) is a non-destructive test (NDT) technique that uses short, high-frequency ultrasonic waves to identify flaws in a material. They generally work by emitting waves into a material. By measuring these waves, the properties of the material and internal flaws can be identified. Most UT devices consist of many separate units. These can include pulsers and receivers, transducers, and display monitors.

UTT Grid
bottom of page