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GWT Fundamentals & UT comparison

Aug. 07, 2026 by Sang Kim  

This module introduces the physical principles behind guided wave testing (GWT), explaining what guided waves are, how GWT differs from conventional ultrasonic testing, and the key advantages of the technique. It also introduces dispersion curves and particle displacement, which are essential to understanding the different wave modes.

The central message throughout this series is simple: GWT is not a separate discipline from conventional ultrasonic testing. It is ultrasonic testing — based on the same physics and engineering rigor — but applied at lower frequencies, with the geometry of the structure guiding wave propagation.

New videos are published weekly across four learning tracks: Theory, Equipment, Field, and Procedure. Whether you're preparing for GWT certification, training others, or looking to build a deeper understanding of the technique, we invite you to follow the series and learn with us. You're also welcome to join the discussion in our LinkedIn group.


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