STP779

    Laboratory Studies of Infrared Thermography in Roofing Moisture Detection

    Published: Jan 1982


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    Abstract

    A laboratory evaluation of infrared thermography for detecting moisture in roofing specimens is presented. This study was based on laboratory controlled specimen preparation and testing conditions. For steady state heat flow, and in a few cases, transient heat flow, the effects of moisture on the surface temperature of the roofing specimens were determined by thermocouples and thermography. Surface temperatures determined by infrared thermography were shown to correlate well with the thermocouple temperatures. Two system performance parameters were assessed: threshold moisture content and the slope of the instrument response versus moisture content curve.

    Keywords:

    heat transmission, infrared detection, insulation, moisture in roofing, nondestructive testing, roofing, temperature measuring instruments, thermal resistance, thermography


    Author Information:

    Jenkins, DR
    Professor of engineering, University of Central Florida, Orlando, Fla.

    Knab, LI
    Center for Building Technology, National Engineering Laboratory, National Bureau of Standards, Washington, D.C.

    Mathey, RG
    Center for Building Technology, National Engineering Laboratory, National Bureau of Standards, Washington, D.C.


    Paper ID: STP38695S

    Committee/Subcommittee: E06.21

    DOI: 10.1520/STP38695S


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