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Ultrasonic Testing
MODULE 1: Introduction to Ultrasonic Testing
Tips before getting started
What to expect in this section? (0:44)
How does sound help us inspect objects? (2:08)
How does Sound travel? (1:55)
Why you sound different on a voice recorder?
Ultrasonic Applications: Railroad
Ultrasonic Applications: SONAR
Ultrasonic Applications: Fishing
Ultrasonic Applications: Levitating Objects
Responsibilities of Level I, II and III and Qualification vs Certification (4:19)
SNT-TC-1A Recommendations
SNT-TC-1A Document (5:52)
What is frequency and wavelength? (4:11)
Velocity, frequency and wavelength equation (3:18)
Read Chapter 1
Summary Lesson 1
Review 1
MODULE 2: Basic Principles of Sound
What to expect in this section? (1:00)
Modes of Sound Propagation (7:47)
Modes of Sound Propagation in detail (7:58)
What is frequency and wavelength? (4:11)
Velocity, frequency and wavelength equation (3:18)
Test Your Human Hearing Range
Blind Guy Echolocation
What is the relationship between frequency and penetration? (1:50)
Attenuation (loss of sound) (1:06)
Acoustical Impedance and Impedance Ratio (3:08)
Reflection vs Refraction of sound. (5:28)
Mode Conversion and Critical Angles (6:56)
Snell's Law Math Problem (8:50)
QnA Session on Snell's Law with Animation (29:22)
Calculating Critical Angles using Snell's Law (13:53)
QnA Session on Critical Angles (19:15)
Read Chapter 2
Lesson 2 Summary
Review
Module 3: Equipment
What is A-scan, B-scan and C-scan? (2:43)
Typical UT Flaw detectors (2:18)
What is Decible?
Loudness Comparison in Decibels
Math problems on Decibels and its practical relevance. (7:07)
Decibels in details (23:19)
4 types of rectifications (3:45)
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SNT-TC-1A Document
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