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)
-
Frequency, Wavelength & Velocity using Brushing example (7:40)
-
What is frequency and wavelength? (4:11)
-
Velocity, frequency and wavelength equation (3:18)
-
Read Chapter 1
-
Summary Lesson 1
-
Review 1 Testmoz
-
Review 1 Explained (24:34)
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)
-
Civa: straight beam and angle beam animation (12:03)
-
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)
-
Civa: Normal Incidence (11:07)
-
Reflection vs Refraction of sound. (5:28)
-
Civa : Refraction (6:35)
-
Mode Conversion and Critical Angles (6:56)
-
Civa: Mode conversion (18:47)
-
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)
-
Lesson 2 Summary
-
Review 2 Testmoz
-
Review 2 Explained (20:43)
Module 3: Equipment
-
Typical UT Flaw detectors (2:18)
-
What is Decible?
-
Loudness Comparison in Decibels
-
Decibels in details (23:19)
-
Math problems on Decibels and its practical relevance. (7:07)
-
DB Sample Problem Explained (11:20)
-
What is A-scan, B-scan and C-scan? (2:43)
-
Civa: A scan (25:37)
-
Civa: B Scan (16:55)
-
Civa: C Scan (22:47)
-
4 types of rectifications (3:45)
-
What is Calibration and what are Reference Standards? (1:40)
-
What are Area Amplitude Blocks? (3:32)
-
CIVA: Area Amplitiude Blocks (6:54)
-
What are Distance Amplitude Blocks? (2:24)
-
CIVA: Distance Amplitude Blocks (7:33)
-
Most important acronym in Ultrasonic Testing (3:02)
-
Audio Review of Modules 1 to 3
-
Lesson 3 summary
-
Review 3 on Testmoz
-
Review 3 Explained (37:04)
Practical Demonstrations
Module 4: About the Transducer
-
What to expect in this section? (0:58)
-
Piezo-electricity (4:55)
-
Piezo-electric Materials (1:44)
-
Civa Near far zone (7:09)
-
Civa: Frequency and Beam Shape (7:10)
-
Near zone, Far zone and Dead zone (4:39)
-
Three Zones in detail (QnA Session) (23:18)
-
Dead Zone Explained
-
Civa Beam Spread and Diameter relation (7:53)
-
Types of transducers (3:22)
-
Dual Crystals and the Round Mound of Sound
-
How to quickly check wedge contour for Shear Wave transducers
-
Civa Resolution Sensitivity (16:11)
-
Sensitivity Resolution QnA (11:44)
-
Broadband vs Narrowband Transducers
-
Damping (2:55)
-
Gain and Voltage
-
How to use powder couplant?
-
Couplants (2:14)
-
Honey vs Couplant
-
UT Thickness without Couplant!
-
Noncontact Transducers (5:59)
-
Lesson 4 summary
-
Review 4 Testmoz
-
Review 4 Explained (24:14)
Module 5: The different UT techniques
Module 6: Reading Assignment Lesson 6
Module 7: Calibrating UT Equipment
-
High Pass and Low Pass filters (3:07)
-
Horizontal linearity, Vertical linearity and Amplitude linearity
-
Basic equipment familiarity
-
Straight Beam Calibration
-
Angle-beam Calibration
-
What does a Centerline crack look like in UT?
-
6 db Drop Defect Sizing Technique (Incomplete Penetration)
-
Distance Amplitude Correction (DAC) Curve
-
Lesson 7 Summary
-
Review 7 Testmoz
Module 8: Evaluation of Base Materials
-
What is an Ingot?
-
What is Continuous Casting?
-
UT of Tubes and Bars (4 videos)
-
Detection of Laminations (Practical Demo)
-
What is Forging? (2 videos)
-
Casting Defects
-
UT of Iron Castings (Practical Demo)
-
What is a Composite?
-
What does damage to a composite look like?
-
Immersion UT of a Composite
-
Stick Welding (or Shielded Metal Arc Welding: SMAW)
-
MIG Welding (GMAW)
-
TIG Welding (GTAW)
-
Flux Cored Arc Welding (FCAW)
-
WELDING DEFECTS!! Porosity, Arc Strikes, Undercut
-
WELDING DEFECTS!! Incomplete Penetration, Spatter, Excessive Reinforcement
-
Stick Welding Defects: Incomplete Fusion, Slag Inclusion, Overlap
-
Lesson 8 Summary
-
Review 8 Testmoz
Module 9: About discontinuities
-
What to expect in this section? (0:55)
-
Civa: A-scan Immersion UT
-
Civa: Immersion UT Incident Angle Error Second Mode Effect
-
Civa: Immersion UT Beam and Intensity
-
Civa: Immersion UT Incident Angle Error Amplitude Effect
-
Civa: Immersion UT Minimum Water Path
-
Relevant and Nonrelevant Indications (4:01)
-
3 stages of discontinuity detection (2:04)
-
Discontinuity Orientation and its Effects (8:25)
-
Discontinuity vs Defects
-
Defect sizing technique-6dB Drop
-
Some tips on Detecting Discontinuities
-
Crack Detection: Surface Waves or Shear Waves?
-
Thickness Measurement of Thin Materials
Module 10: Advanced UT Theory: Phased Array
Module 11 & 12: Advanced UT Theory: Time of Flight Diffraction and Guided Wave Testing
Module 13: Evaluation Standards
Bonus Videos
Practice Tests
