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Introduction to Infrared (IR) Theory and Camera Operation

This agenda introduces the basics of infrared theory and its application in camera operation and post-analysis capabilities. Topics covered include the types of analysis, qualitative and quantitative measurements, and the benefits of using infrared for research and development. The agenda also includes practical examples and demonstrations.

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Introduction to Infrared (IR) Theory and Camera Operation

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  1. AGENDA… • Introduction to IR Brad Risser • Camera Operation / Post Analysis Capabilities Jim Hungerford

  2. IR Theory Infrared Radiation… • IR is emitted by all objects • IR radiation is minimal at low temperatures • IR radiation increases with temperature • IR is generated by the vibration of electrically charged particles • IR travels through space at the speed of light • The difference between light and IR is wavelength

  3. IR Theory 2 Types of Analysis Qualitative – Comparative analysis

  4. IR Theory Qualitative… Which is Hotter?

  5. IR Theory 2 Types of Analysis Qualitative – Comparative analysis Quantitative – True temperature measurement

  6. IR Theory *>46.1°C Spot 11 39.4 45.0 40.0 Spot 10 35.0 43.3 30.0 25.0 Area1 Area1 Min Min Mean Mean Max Max 33.0 33.0 42.5 42.5 44.7 44.7 20.0 15.0 *<15.0°C Quantitative… How Hot?

  7. Why does Infrared work for Research & Development? • Non Contact Temperature Measurement (no thermal couples, non-destructive means of testing) • Quick / Easy to Interpret Results(more meaningful than data) • Raw Data Available • Can Resolve Small Targets (12 Microns) and small temperature changes (<2 degrees C) • Dynamic or Still Digital Acquisition • Valuable Historic Reference

  8. PCB Inspection Loose connections, poor contact, or shorts can result in hot spots. One Fault Known Good Five Faults

  9. Acquisition and Analysis • Static Image AnalysisFull analysis capability • Real Time AnalysisTime versus temperature Image subtraction

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