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Strain sensor based on coaxial cable Bragg grating with gradient cross section by Pengfei Shi; Zirun Li; Youfu Tang; Hongge Zhao; Renjing Gao; Shutian Liu is a Engineering article available to read on EtoBox.

What is Strain sensor based on coaxial cable Bragg grating with gradient cross section about?

The strain sensor based on coaxial cable Bragg grating (CCBG) is an effective tool for precise structural health monitoring of large-scale infrastructure. Meanwhile, expanding the monitoring range, reducing the tensile slip and improve the reusability were still needed, so a design method for strain sensor based on gradient cross section CCBG (GC-CCBG) with low elastic modulus insulating layer was proposed in this paper. The gradient cross section of CCBG was employed to achieve a more flexible form of impedance discontinuity, so as to easily adjust the band gap characteristics. The spline interpolation curve was used to describe the shape of the gradient cross section. Based on cubic spline interpolation, a typical GC-CCBG sensor was designed as a numerical example. The insulating layer with gradient cross section of the prototype was fabricated by 3D printing technology. The feasibility of the proposed method for strain sensor was verified through simulation and experiment. The influence of the interpolation knots on sensing characteristics was also discussed.

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Author

Pengfei Shi; Zirun Li; Youfu Tang; Hongge Zhao; Renjing Gao; Shutian Liu

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)