Structural monitoring by use of a Brillouin distributed sensor.
The testing of a fiber-optic distributed-strain sensor attached to a simple structural member is reported. A Brillouin scattering-based sensor system was used to measure both tensile and compressive strains along the length of a cantilever beam subjected to various loads. The sensing fiber was attached to the beam in such a way that some sections experienced uniform strain, whereas others were subjected to a nonuniform strain distribution. A spatial resolution of 0.4 m was used, and a measurement precision of approximately +/-50 microepsilon was achieved.
DeMerchant
M
M
Department of Civil Engineering, University of New Brunswick, PO Box 4400, Fredericton, E3B 5A3 New Brunswick, Canada. m4nh@unb.ca
Brown
A
A
Bao
X
X
Bremner
T
T