A novel multiplexed fiber Bragg grating sensor with application in structural health monitoring

被引：3

作者：

Etezad, Maryam ^{[1
]}

Kahrizi, Mojtaba ^{[1
]}

Khorasani, Khashayar ^{[1
]}

机构：

[1] Concordia Univ, Dept Elect & Comp Engn, 1455 Maisonneuve Blvd West, Montreal, PQ H3G 1M8, Canada

来源：

PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 8, NO 9 | 2011年 / 8卷 / 09期

关键词：

fiber Bragg grating; genetic algorithms; strain and health monitoring; GENETIC ALGORITHM; RECONSTRUCTION;

D O I：

10.1002/pssc.201084108

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The use of fiber Bragg gratings (FBGs) on a single fiber for analyzing the strain in two dimensions is presented. The effects of the simultaneous transversal and longitudinal force on an FBG sensor is analyzed and its perturbed reflected spectrum is modeled by introducing the change of the refractive indecies and grating period along the fiber to the transfer matrix formulation method ('measured' spectrum). Furthermore, the use of genetic algorithm for reconstruction of nonuniform applied transverse forces from the 'measured' spectrum is presented. The genetic algorithm requires only the measured spectra information and the refractive index distribution is encoded along the Bragg grating into the genes. The presented method is verified through the numerical examples and the results show that our methodology can effectively represent and model the applied transverse force profile. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：2953 / 2956

页数：4

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