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Infrared and Thermal Testing Examinations

About Thermal/Infrared Testing (IR)

Infrared/Thermal Testing, or infrared thermography, is used to measure or map surface temperatures based on the infrared radiation given off by an object as heat flows through, to or from that object. The majority of infrared radiation is longer in wavelength than visible light but can be detected using thermal imaging devices, commonly called "infrared cameras." For accurate IR testing, the part(s) being investigated should be in direct line of sight with the camera, i.e., should not be done with panel covers closed as the covers will diffuse the heat and can result in false readings. Used properly, thermal imaging can be used to detect corrosion damage, delaminations, disbonds, voids, inclusions as well as many other detrimental conditions.

Topical Outline

This examination is 2 hrs in length, having 90 questions of equal value.

  1. Principles/Theory
  2. Conduction
  3. Convection
  4. Radiation
  5. The nature of heat and heat flow
  6. Temperature measurement principles
  7. Proper selection of Thermal/Infrared testing
  8. Equipment/Materials
  9. Temperature measurement equipment
  10. Heat flux indicators
  11. Performance parameters of non-contact devices
  12. Techniques
  13. Contact temperature indicators
  14. Non-contact pyrometers
  15. Infrared line scanners
  16. Thermal/Infrared imaging
  17. Heat flux indicators
  18. Exothermic or endothermic investigations
  19. Friction investigations
  20. Fluid Flow investigations
  21. Thermal resistance (steady state heat flow)
  22. Thermal capacitance investigations
  23. Interpretation/Evaluation
  24. Procedures
  25. Safety and health
  26. Safety responsibility and authority
  27. Safety for personnel
  28. Safety for client and facilities
  29. Safety for testing equipment


The number in parentheses following each reference is the ASNT catalog number.