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Title: Priority design parameters of industrialized optical fiber sensors in civil engineering
Authors: Wang, H 
Jiang, L
Xiang, P
Issue Date: 2018
Source: Optics and laser technology, 2018, v. 100, p. 119-128
Abstract: Considering the mechanical effects and the different paths for transferring deformation, optical fiber sensors commonly used in civil engineering have been systematically classified. Based on the strain transfer theory, the relationship between the strain transfer coefficient and allowable testing error is established. The proposed relationship is regarded as the optimal control equation to obtain the optimal value of sensors that satisfy the requirement of measurement precision. Furthermore, specific optimization design methods and priority design parameters of the classified sensors are presented. This research indicates that (1) strain transfer theory-based optimization design method is much suitable for the sensor that depends on the interfacial shear stress to transfer the deformationMergeCell (2) the priority design parameters are bonded (sensing) length, interfacial bonded strength, elastic modulus and radius of protective layer and thickness of adhesive layerMergeCell (3) the optimization design of sensors with two anchor pieces at two ends is independent of strain transfer theory as the strain transfer coefficient can be conveniently calibrated by test, and this kind of sensors has no obvious priority design parameters. Improved calibration test is put forward to enhance the accuracy of the calibration coefficient of end-expanding sensors. By considering the practical state of sensors and the testing accuracy, comprehensive and systematic analyses on optical fiber sensors are provided from the perspective of mechanical actions, which could scientifically instruct the application design and calibration test of industrialized optical fiber sensors.
Keywords: Design method
IIndustrialized optical fiber sensor
Improved calibration test
PPriority design parameter
Strain transfer theory
Publisher: Elsevier
Journal: Optics and laser technology 
ISSN: 0030-3992
DOI: 10.1016/j.optlastec.2017.09.035
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