Abstract
Structural Health Monitoring (SHM) can be understood as the integration of
sensing and intelligence to enable the structure loading and
damage-provoking conditions to be recorded, analyzed, localized, and
predicted in such a way that nondestructive testing becomes an integral part
of them. In addition, SHM systems can include actuation devices to take
proper reaction or correction actions. SHM sensing requirements are very
well suited for the application of optical fiber sensors (OFS), in
particular, to provide integrated, quasi-distributed or fully distributed
technologies. In this tutorial, after a brief introduction of the basic SHM
concepts, the main fiber optic techniques available for this application are
reviewed, emphasizing the four most successful ones. Then, several examples
of the use of OFS in real structures are also addressed, including those
from the renewable energy, transportation, civil engineering and the oil and
gas industry sectors. Finally, the most relevant current technical
challenges and the key sector markets are identified. This paper provides a
tutorial introduction, a comprehensive background on this subject and also a
forecast of the future of OFS for SHM. In addition, some of the challenges
to be faced in the near future are addressed.
© 2011 IEEE
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