Limited Certification for Ultrasonic Digital Thickness Measurement Topical Outline

Total hours of instruction for this course: 8 hours

1. Principles/Theory
   1. General
   2. Principles of acoustics
      1. Nature of sound waves
      2. Modes of sound wave generation
      3. Velocity, frequency and wavelength of sound waves
      4. Attenuation of sound waves
      5. Acoustic impedance
      6. Reflection
2. Equipment/Materials
   1. Equipment
      1. Pulse-echo instrumentation
         1. Controls and circuits
         2. Pulse generation
         3. Signal detection
         4. Display and recording methods, A-scan, B-scan, C-scan and digital
         5. Sensitivity and resolution
         6. Gates, alarms and attenuators
         7. Basic instrument calibration
         8. Calibration blocks
      2. Digital thickness instrumentation
      3. Transducer operation and theory
         1. Piezoelectric effect
         2. Types of crystals
         3. Frequency (crystal-thickness relationships)
         4. Types (straight, angle, single, dual, etc.)
   2. Materials
      1. Couplants
         1. Purpose and principles
         2. Material and their efficiency
      2. Calibration blocks
      3. Cables/connectors
      4. Test specimen
      5. Miscellaneous materials
3. Techniques/Calibrations – Contact Straight Beam
4. Variables Affecting Test Results
   1. Instrument performance variations
   2. Transducer performance variations
   3. Test specimen variations
      1. Surface condition
      2. Part geometry
      3. Material structure
5. Procedure/Specification Applications/Thickness Measurement

Limited Certification for Ultrasonic A-scan Thickness Measurement Topical Outline

Total hours of instruction for this course: 24 hours

1. Principles/Theory
   1. General
   2. Principles of acoustics
      1. Nature of sound waves
      2. Modes of sound wave generation
      3. Velocity, frequency and wavelength of sound waves
      4. Attenuation of sound waves
      5. Acoustic impedance
      6. Reflection
2. Equipment/Materials
   1. Equipment
      1. Pulse-echo instrumentation
         1. Controls and circuits
         2. Pulse generation
         3. Signal detection
         4. Display and recording methods, A-scan, B-can, C-scan and digital
         5. Sensitivity and resolution
         6. Gates, alarms and attenuators
         7. Basic instrument calibration
         8. Calibration blocks
      2. Digital thickness instrumentation
      3. Transducer operation and theory
         1. Piezoelectric effect
         2. Types of crystals
         3. Frequency (crystal-thickness relationships)
         4. Types (straight, angle, single, dual, etc.)
      4. Resonance testing equipment
         1. Thickness testing
   2. Materials
      1. Couplants
         1. Purpose and principles
         2. Material and their efficiency
      2. Calibration blocks
      3. Cables/connectors
      4. Test specimen
      5. Miscellaneous materials
3. Techniques/Calibrations – Contact Straight Beam
   1. Contact
      1. Straight beam
      2. Pulse-echo transmission
4. Variables Affecting Test Results
   1. Instrument performance variations
   2. Transducer performance variations
   3. Test specimen variations
      1. Surface condition
      2. Part geometry
      3. Material structure
   4. Personnel variations
      1. Skill level in interpretation of results
      2. Knowledge level in interpretation of results
5. Procedures
   1. Thickness measurement