Thermographic Inspection of Rail-Car Thermal Insulation

[+] Author and Article Information
A. M. Birk, Mark. H. Cunningham

Mechanical Engineering, Queen’s University, Kingston, Ontario, K7K 3N6, Canada

J. Pressure Vessel Technol 122(4), 494-501 (Jul 06, 2000) (8 pages) doi:10.1115/1.1310365 History: Received February 15, 2000; Revised July 06, 2000
Copyright © 2000 by ASME
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Allen L. R., and Semanovich, S., 1991, “Thermal Analysis of Masonary Block Buildings During Construction,” Proc. SPIE, Vol. 1467, Thermosense XIII.
Grinzato,  E., Vavilov,  V., and Kauppinen,  T., 1998, “Quantitative Infrared Thermography in Buildings,” Energy and Buildings, 29, No. 1, pp. 1–9.
Vavilov, V., Ivanov, A., and Sengulye, A., 1991, “Qualitative and Quantitative Evaluation of Moisture in Thermal Insulation by Using Thermography,” Proc. SPIE, Vol. 1467, Thermosense XIII.
Image Tool 1.27 (image analysis software), 1997, University of Texas Health Sciences Center and San Antonio, TX.


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Test apparatus modeling tank-car
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Insulation test pattern
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Thermal images of test pattern, Ta−Tl=11°C—(a) enhanced thermal image from Tl NightSight, (b) thermal image from FSI prism
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Wet Insulation test, wet center strip, Ta−Tl=11°C. Note: horizontal bands due to optics in the imager.
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Effect of viewing angle on spatial resolution
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Thermal Images from field trials; dark areas indicate insulation deficiencies (Tl Palm IR)—(a) aluminum tank—IR reflection obscures IR emission; (b) tank-car insulation deficiencies; (c) tank-car with insulation deficiencies; (d) tank-car with no insulation deficiencies
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Tank-car recently loaded with warm lading, light areas show insulation deficiencies (Tl Palm IR)



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