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.
Source PublicationMEASUREMENT SCIENCE & TECHNOLOGY
2014
Volume25Issue:12Pages:125109
ISSN0957-0233
AbstractWe 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.
KeywordDamage Reconstruction Fiber Bragg Grating Reflection Intensity Spectrum Transfer Matrix Genetic Algorithm Finite Element Method
Subject AreaEngineering ; Instruments & Instrumentation
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000345286800019
Funding OrganizationThe 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).
DepartmentLMFS流固耦合与数值计算(LHO)
Classification二类/Q2
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Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49446
Collection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
Corresponding AuthorHuang, GJ (reprint author), Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.
Recommended Citation
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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