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Ultrasonic Thickness Testing
Introduction to Ultrasonic Testing
What to expect in this section? (0:44)
How does sound help us inspect objects? (2:08)
How does Sound travel? (1:55)
Responsibilities of Level I, II and III and Qualification vs Certification (4:19)
Basic Principles of Sound
What to expect in this section? (1:00)
Modes of Sound Propagation in detail (7:58)
What is frequency and wavelength? (4:11)
Velocity, frequency and wavelength equation (3:18)
What is the relationship between frequency and penetration? (1:50)
Acoustical Impedance and Impedance Ratio (3:09)
Review 1
Equipment
What is A-scan, B-scan and C-scan? (2:43)
Types of transducers (3:22)
Typical UT Flaw detectors (2:18)
Math problems on Decibles and its practical relevance. (7:07)
4 types of rectifications (3:45)
What is Calibration and what are Reference Standards? (1:40)
What are Area Amplitude Blocks? (3:32)
What are Distance Amplitude Blocks? (2:24)
Practical Demonstration of UT Thickness Calibration
Thickness Calibration with Dakota Ultrasonics DFX-7 (1:48)
How to perform UT thickness calibration using Omniscan SX? (7:09)
New Lecture (21:51)
About the Transducer
What to expect in this section? (0:58)
Piezo-electricity (4:55)
Piezo-electric Materials (1:44)
Near zone, Far zone and Dead zone (4:39)
Couplants (2:14)
Noncontact Transducers (4:29)
The different UT techniques
What to expect in this section? (1:40)
What is Ultrasonic Immersion Testing (6:39)
Can you answer this Immersion UT question? (2:22)
Additional useful videos
Most important acronym in Ultrasonic Testing (3:02)
High Pass and Low Pass filters (3:07)
All about discontinuities
3 stages of discontinuity detection (2:04)
Discontinuity vs Defects (1:46)
Sample Report
Bonus Videos
Tips to be a great NDT Technician Part 1 (2:54)
Tips to be a great NDT Technician Part 2 (3:34)
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What is Calibration and what are Reference Standards?
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