Reconstruction of structural damage based on reflection intensity spectra of fiber Bragg gratings

IMECH-IR > 流固耦合系统力学重点实验室

	Reconstruction of structural damage based on reflection intensity spectra of fiber Bragg gratings
	Huang GJ(黄国君); Wei CB; Chen SY; Yang GW(杨国伟); Huang, GJ (reprint author), Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.
发表期刊	MEASUREMENT SCIENCE & TECHNOLOGY
	2014
卷号	25 期号:12 页码:125109
ISSN	0957-0233
摘要	We present an approach for structural damage reconstruction based on the reflection intensity spectra of fiber Bragg gratings (FBGs). Our approach incorporates the finite element method, transfer matrix (T-matrix), and genetic algorithm to solve the inverse photo-elastic problem of damage reconstruction, i.e. to identify the location, size, and shape of a defect. By introducing a parameterized characterization of the damage information, the inverse photo-elastic problem is reduced to an optimization problem, and a relevant computational scheme was developed. The scheme iteratively searches for the solution to the corresponding direct photo-elastic problem until the simulated and measured (or target) reflection intensity spectra of the FBGs near the defect coincide within a prescribed error. Proof-of-concept validations of our approach were performed numerically and experimentally using both holed and cracked plate samples as typical cases of plane-stress problems. The damage identifiability was simulated by changing the deployment of the FBG sensors, including the total number of sensors and their distance to the defect. Both the numerical and experimental results demonstrate that our approach is effective and promising. It provides us with a photo-elastic method for developing a remote, automatic damage-imaging technique that substantially improves damage identification for structural health monitoring.
关键词	Damage Reconstruction Fiber Bragg Grating Reflection Intensity Spectrum Transfer Matrix Genetic Algorithm Finite Element Method
学科领域	Engineering ; Instruments & Instrumentation
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000345286800019
项目资助者	The authors appreciate the support for this work from the High Scientific and Technical Plan, Ministry of Sciences and Technology of China (grant No. 2008AA09Z312) and from the Instrument Research and Development Project, Chinese Academy of Sciences (grant No. 025).
课题组名称	LMFS流固耦合与数值计算(LHO)
论文分区	二类/Q2
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/49445
专题	流固耦合系统力学重点实验室高温气体动力学国家重点实验室
通讯作者	Huang, GJ (reprint author), Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Huang GJ,Wei CB,Chen SY,et al. Reconstruction of structural damage based on reflection intensity spectra of fiber Bragg gratings[J]. MEASUREMENT SCIENCE & TECHNOLOGY,2014,25,12,:125109.
APA	Huang GJ,Wei CB,Chen SY,Yang GW,&Huang, GJ .(2014).Reconstruction of structural damage based on reflection intensity spectra of fiber Bragg gratings.MEASUREMENT SCIENCE & TECHNOLOGY,25(12),125109.
MLA	Huang GJ,et al."Reconstruction of structural damage based on reflection intensity spectra of fiber Bragg gratings".MEASUREMENT SCIENCE & TECHNOLOGY 25.12(2014):125109.

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