Over the past several months, we have been building a complete video training library for Guided Wave Testing — Level 1 and Level 2 — and today we're launching it.
This training is built around one core idea:
GWT is not a separate discipline from conventional ultrasonic testing.
It's UT — the same physics, the same rigor — applied at a lower frequency,
guided by the geometry of the structure being tested.
The real differences from ordinary UT are practical, not fundamental:
- Using a dispersion curve to identify which wave modes exist in the tested geometry
- Selecting probe installation location based on mirror and multiple reflections from large geometric features
- Two distinct steps: field data acquisition and recording of geometric features, then separate data analysis and reporting
- Checking every signal at each small section — signal-to-noise ratio, spatial resolution, spectrogram, and FFT of the selected signal
- Three required calibrations: distance, amplitude, and attenuation
- Per-indication and section detail reporting to prove the findings
- Determining the inspection range based on background noise levels and geometric features—not assumptions
- Data analysis and reporting typically taking 30 minutes or more, depending on inspection range and pipe size
The series is organized into four tracks — Theory, Equipment, Field, and Procedure — and a new video will go up weekly, rotating through all four so every track keeps moving forward together.
If you're preparing for GWT certification, training others, or simply want to understand this method properly, I'd encourage you to follow along — and I'd also invite you to join our LinkedIn group, where we discuss reporting standards, field case studies, and the technical reasoning behind proper GWT practice in more depth.
The Guided Wave Analysis Team