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Proceedings Paper

Temperature calibration of fiber optic strain sensor for structural health monitoring
Author(s): K. Kesavan; K. Ravisankar; T. Narayanan; S. Parivallal; P. Sreeshylam; P. K. Aravindan
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Paper Abstract

Major civil engineering structures, such as bridges constitute a significant portion of national wealth, and the cost of maintenance of these structures is very high. Structural health monitoring is a cost effective method of maintenance, and it predicts the structural integrity by early detection of degradation of health of the structure. One of the best ways of structural health monitoring is by the use of fiber optic strain sensors, which are eminently suitable for long term monitoring. However, the apparent strain due to variations in temperature at different measurement times may be very large and has to be accounted for. The apparent strain calibration curves of fiber optic strain sensors bonded to three structural materials, namely, steel, aluminum and concrete are obtained from laboratory experiments which can be used for correcting the temperature induced apparent strain from the total strain measured in the structures.

Paper Details

Date Published: 14 October 2003
PDF: 7 pages
Proc. SPIE 5062, Smart Materials, Structures, and Systems, (14 October 2003); doi: 10.1117/12.514680
Show Author Affiliations
K. Kesavan, Structural Engineering Research Ctr. (India)
K. Ravisankar, Structural Engineering Research Ctr. (India)
T. Narayanan, Structural Engineering Research Ctr. (India)
S. Parivallal, Structural Engineering Research Ctr. (India)
P. Sreeshylam, Structural Engineering Research Ctr. (India)
P. K. Aravindan, Indian Institute of Technology, Madras (India)

Published in SPIE Proceedings Vol. 5062:
Smart Materials, Structures, and Systems
S. Mohan; B. Dattaguru; S. Gopalakrishnan, Editor(s)

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