Introduction to Ultrasonic Testing

Course Overview

This course introduces Ultrasonic Testing (UT) through a structured series of video lessons, followed by a self-evaluation to check understanding. Learners start with the basics of sound: frequency, velocity, wavelength, and the decibel (dB) system. They then move on to the equipment: probes, wedges, instruments, and scanners. Lessons explain how signals are displayed, including full-screen height, full-screen width, gates, and legs. They also cover core theory: transit time, pulse repetition frequency (PRF), Snell’s law, and the beam index point. Next, the course covers setup variables and coverage, followed by calibration of the beam index point, refracted angle, and sensitivity, plus beam edge plotting. Learners study 0-degree and angle beam scanning patterns and weld scanning. They finish with flaw evaluation: the -6 dB drop method, flaw mapping, depth and amplitude, and echostatic patterns. The 20-question self-evaluation test links each question to an explanatory video, so learners can review any topic they missed.

ASNT partners with PhaseX to deliver this course. Enrollment is completed through ASNT’s learning management system, while coursework takes place on PhaseX’s learning platform.

Upon Completion, Learners Will Have Covered:

• The basics of sound used in UT: frequency, velocity, wavelength, and the dB system
• How transit time, PRF, and Snell’s law govern how sound travels and refracts in a test part
• UT equipment and display settings, including full-screen height, full-screen width, gates, and legs
• Calibrating the beam index point, refracted angle, and sensitivity, and creating a beam edge plot
• 0-degree and angle beam scanning patterns, weld scanning, and how flaws are evaluated using the -6 dB drop method, flaw mapping, and depth and amplitude

Questions? Contact us at education@asnt.org