期刊
SMART MATERIALS AND STRUCTURES
卷 9, 期 2, 页码 132-140出版社
IOP PUBLISHING LTD
DOI: 10.1088/0964-1726/9/2/302
关键词
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Measurement of two-dimensional bending in a structural element using intrinsic optical fibre strain gauges would normally require three sensors to be attached to, or embedded within, the structure. The same measurement can now be made using a single multi-core optical fibre, reducing deployment cost and increasing practicality. Fabrication of a novel three-core photonic crystal fibre is described. The ability of the fibre sensor to measure bend in two dimensions is demonstrated in the laboratory using interferometric interrogation at a single wavelength. Deployment of the sensor to measure the deformation of a bridge undergoing loading trials is described.
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