Optical fiber accelerometer system for structural dynamic monitoring


Autoria(s): Antunes, Paulo Fernando da Costa; Lima, Hugo F. T.; Alberto, Nélia Jordão; Rodrigues, Hugo; Pinto, Pedro M. F.; Pinto, João de Lemos; Nogueira, Rogerio N.; Varum, Humberto; Costa, Aníbal G.; André, Paulo Sérgio
Data(s)

08/02/2012

2009

Resumo

In this study, the implementation of an optical accelerometer unit based on fiber Bragg gratings, suitable to monitor structures with frequencies up to 45 Hz, is reported. The developed optical system was used to estimate the structure eigenfrequencies of a steel footbridge, with a total length of 300 m, over the Sao Pedro Creek, located at University of Aveiro Campus, in Portugal. The acceleration records measured with this solution are compared with those obtained by traditional commercial electronic devices, revealing a root-mean-square error of 2.53 x 10(-5) G.

Identificador

1530-437X

http://hdl.handle.net/10773/6014

Idioma(s)

eng

Publicador

IEEE

Relação

http://dx.doi.org/10.1109/JSEN.2009.2026548

Direitos

restrictedAccess

Palavras-Chave #Accelerometer #Fiber Bragg grating (FBG) #Optical sensor #Structural health monitoring (SHM)
Tipo

article