Temperature calibration of fiber optic strain sensor for structural health monitoring

K. Kesavan; K. Ravisankar; T. Narayanan; S. Parivallal; P. Sreeshylam; P. K. Aravindan

doi:10.1117/12.514680

14 October 2003 Temperature calibration of fiber optic strain sensor for structural health monitoring

K. Kesavan, K. Ravisankar, T. Narayanan, S. Parivallal, P. Sreeshylam, P. K. Aravindan

Proceedings Volume 5062, Smart Materials, Structures, and Systems; (2003) https://doi.org/10.1117/12.514680
Event: Smart Materials, Structures, and Systems, 2002, Bangalore, India

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.

Citation Download Citation

K. Kesavan, K. Ravisankar, T. Narayanan, S. Parivallal, P. Sreeshylam, and P. K. Aravindan "Temperature calibration of fiber optic strain sensor for structural health monitoring", Proc. SPIE 5062, Smart Materials, Structures, and Systems, (14 October 2003); https://doi.org/10.1117/12.514680

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