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Proceedings Paper

Problems inherent to quantitative thermographic electrical inspections
Author(s): John R. Snell
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Paper Abstract

The primary value of using infrared thermography to inspect electrical systems is to find problems made apparent by their thermal differences. Thermographers have also begun collecting radiometric temperature data as quantitative imaging systems have become more reliable and portable. Throughout the industry the use of temperature data has become a primary means of prioritizing the severity of a problem. The validity of this premise is suspect for several reasons, including the lack of standard data collection methods; the often poor understanding of radiometric measurements by maintenance thermographers; field conditions that vary widely enough to defy standardization; and the almost total lack of scientific research on the relationship between heat and time with regard to the failure of the components being inspected. Several possible solutions to the problems raised, as well as other suggestions for improving the usefulness and reliability of qualitative inspections, are offered.

Paper Details

Date Published: 28 March 1995
PDF: 7 pages
Proc. SPIE 2473, Thermosense XVII: An International Conference on Thermal Sensing and Imaging Diagnostic Applications, (28 March 1995); doi: 10.1117/12.204842
Show Author Affiliations
John R. Snell, John Snell & Associates (United States)


Published in SPIE Proceedings Vol. 2473:
Thermosense XVII: An International Conference on Thermal Sensing and Imaging Diagnostic Applications
Sharon A. Semanovich, Editor(s)

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