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Proceedings Paper

An Experimental And Theoretical Evaluation Of IR Thermography For Surveying The Condition Of Bridge Decks
Author(s): T. Masliwec
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Paper Abstract

A comprehensive data base is a critical component of a cost-effective bridge management program. Data is needed in order to assess the overall condition of the bridge network, establish priorities for repair, select the most appropriate methods for bridge repair, and prepare contract documents. The most practical and economic method of collecting this information is to use indirect measurement. techniques. Such non-destructive techniques do not directly measure the physical properties of the structure and the condition must be inferred using signal processing methods. A number of bridge testing techniques were investigated by the Ontario Ministry of Transportation over a period of almost ten years. The product of the studies is the Deck Assessment by Radar and Thermography (DART) system. As the acronym implies, DART utilises two basic systems: impulse radar and infrared thermography. This paper describes the main features of the DART infrared system. A theoretical two-dimensional heat transfer model for estimating temperature profiles in bridge decks is also presented. Actual temperature measurements are provided for comparison with the theoretical model.

Paper Details

Date Published: 1 January 1988
PDF: 9 pages
Proc. SPIE 0934, Thermosense X: Thermal Infrared Sensing for Diagnostics and Control, (1 January 1988); doi: 10.1117/12.968482
Show Author Affiliations
T. Masliwec, Ontario Ministry of Transportation (Canada)

Published in SPIE Proceedings Vol. 0934:
Thermosense X: Thermal Infrared Sensing for Diagnostics and Control
Ronald D. Lucier, Editor(s)

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