Introduction to Non-Destructive Testing
  • Historical perspective of the use of ultrasound
  • Comparison with other commonly used NDT methods
Fundamental Properties of Ultrasound
  • Definition of ultrasonic vibrations
  • Relationship of frequency velocity and wavelength
  • Diffraction theory
  • Modes of particle vibration
Generation of Ultrasonic Waves
  • Piezoelectric crystal types and characteristics
  • Search unit construction
  • Search unit characteristics: resolution; sensitivity
Test Material Characteristics
  • Velocity
  • Sound attenuation
  • Acoustic impedance
Sound Beam Characteristics
  • Dead zone; Near zone; Far zone
  • Intensity variations
  • Probe diameter and frequency effect
Angular Incidence
  • Reflection
  • Refraction
  • Mode conversion
  • Snell's Law
  • Critical angles
Ultrasonic Inspection Techniques
  • Through transmission
  • Pulse echo
  • Angle beam
  • Immersion testing
Ultrasonic Testing Equipment
  • Basic pulse echo instrument
  • Ultrasonic Testing Equipment Controls
  • Information displays: A scan, B scan, C scan, digital readouts
Ultrasonic Reference Blocks
  • Types of Calibration Blocks
  • Calibration Methodes
Inspected Part Variations
  • Effect of surface roughness
  • Surface curvature
  • Grain size
Discontinuity Variations
  • Shape
  • Coutour of discontinuities
  • Defect Syzing Methods
Level 1 Exam Questions
  • Ultrasonic Testing Level 1 (UT-1) Quiz