Guided Wave Ultrasonic Testing & NDT Insights

Latest articles, updates, and technical guides on guided wave UT technology.

Technology Guided Wave Training

Guided Wave Ultrasonic Systems and Probes

Published: October 14, 2026

A continuous encircling probe (MsS) has no near field length, while a discrete-element probe (piezoelectric) does — a direct consequence of probe geometry that affects how close to a probe a defect can actually be found....

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Technology Guided Wave Training

Signal Amplitude Calibration Methods

Published: October 09, 2026

How to calibrate signal amplitude properly, what actually decides the inspection range, and why a guided wave can pass many welds and still find a defect at the far end. On calibration there are three methods, and they differ in how much you have to assume...

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Case Study Guided Wave Training

Measure a Defect's Length Using the Frequency

Published: September 30, 2026

It covers what happens when a defect has a real axial length instead of being a single sharp step. But a real defect is not a step. It has a front edge and a rear edge, and both reflect. Sometimes those two reflections arrive together and add. Sometimes they arrive opposite and cancel...

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Technology Guided Wave Training

Reporting Defect Location in Guided Wave Testing

Published: September 23, 2026

It covers calibration, and how you write a defect location. A defect on a pipe can be located in four different ways. 82.3 feet from the probe, 3 feet from the fifth pipe support, 9.5 feet from the third weld, 18.7 feet from the flange. So, which one would you use to describe the defect location?...

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