Applications of distributed fiber Bragg grating sensors in civil engineering

摘要: We report on civil engineering applications of wavelength multiplexed optical-fiber Bragg grating arrays produced directly the draw tower for testing and surveying advanced structures material like carbon fiber reinforced concrete elements prestressing tendons. equipped a 6 m X 0.9 0.5 cantilever beam with lamellas sensors. Static dynamic strain levels up to 1500 micrometers /m were measured Michelson interferometer used as Fourier spectrometer resolutions about 10 all Comparative measurements electrical resistance gauges in good agreement optic results. sensors two different arrangements: some array local while others configured an extensometric way measure moderate over 0.1-1 m.