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MDPI, Sensors, 5(12), p. 6629-6644, 2012

DOI: 10.3390/s120506629

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Dynamic Structural Health Monitoring of Slender Structures Using Optical Sensors

Journal article published in 2012 by Paulo Antunes, Rui Travanca, Hugo Rodrigues ORCID, José Melo, José Jara, Humberto Varum ORCID, Paulo André
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

In this paper we summarize the research activities at the Instituto de Telecomunicações--Pólo de Aveiro and University of Aveiro, in the field of fiber Bragg grating based sensors and their applications in dynamic measurements for Structural Health Monitoring of slender structures such as towers. In this work we describe the implementation of an optical biaxial accelerometer based on fiber Bragg gratings inscribed on optical fibers. The proof-of-concept was done with the dynamic monitoring of a reinforced concrete structure and a slender metallic telecommunication tower. Those structures were found to be suitable to demonstrate the feasibility of FBG accelerometers to obtain the structures' natural frequencies, which are the key parameters in Structural Health Monitoring and in the calibration of numerical models used to simulate the structure behavior.