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

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Reconstruction of structural damage based on reflection intensity spectra of fiber Bragg gratings
	Huang, GJ (reprint author), Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.; Yang GW(杨国伟); Chen SY; Wei CB; Huang GJ(黄国君)
刊名	MEASUREMENT SCIENCE & TECHNOLOGY
	2014
卷号	25 期号:12 页码:125109
关键词	Damage Reconstruction Fiber Bragg Grating Reflection Intensity Spectrum Transfer Matrix Genetic Algorithm Finite Element Method
ISSN号	0957-0233
产权排序	[Huang, Guojun; Wei, Changben; Chen, Shiyuan; Yang, Guowei] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
英文摘要	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.
学科主题	Engineering ; Instruments & Instrumentation
分类号	二类/Q2
URL标识	查看原文
语种	英语
WOS记录号	WOS:000345286800019
资助机构	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).
公开日期	2015-01-04
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/49446]
专题	力学研究所_流固耦合系统力学重点实验室(2012-) 力学研究所_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 ,Yang GW,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 ,Yang GW,Chen SY,Wei CB,&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.