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Monitoring corrosion of reinforcement in concrete structures via fiber Bragg grating sensors

Zhupeng ZHENG, Xiaoning SUN, Ying LEI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 316-319 doi: 10.1007/s11465-009-0040-y

Abstract: In this paper, using fiber Bragg grating (FBG), a corrosion sensor for monitoring steel rebars embeddedpackaged with fiber-reinforced plastics (FRP) is wrapped on the steel bar.During corrosion, the increase in the bar diameter leads to the increase in fiber strain, which can bemeasured by the shift of the wavelength of FBG.The corrosion extent can be quantitatively evaluated through the change in the wavelength of FBG.

Keywords： fiber Bragg grating (FBG)     corrosion     concrete structures     accelerated corrosion test    

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Digital monitoring and health diagnosis for mechanical equipment operation safety based on fiber Bragggrating sensor

Zude ZHOU, Desheng JIANG, Quan LIU

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1,   Pages 5-14 doi: 10.1007/s11465-009-0011-3

Abstract: This paper introduces fiber Bragg grating (FBG) based on a fiber optic grating sensor developed to beThe theoretical and experimental researches on the new-style FBG sensor (FBGS) technology, high-speedThe transmission characteristics between the FBG and the detection interface, modeling and compensation

Keywords： fiber Bragg grating sensor (FBGS)     mechanical equipment operation safety     embedded technology     high-speed    

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Numerical investigation and optimal design of fiber Bragg grating based wind pressure sensor

Xiangjie WANG, Danhui DAN, Rong XIAO, Xingfei YAN

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 3,   Pages 286-292 doi: 10.1007/s11709-017-0415-9

Abstract: A wind pressure sensor based on fiber Bragg grating (FBG) for engineering structure was investigated

Keywords： wind pressure measurement     wind pressure sensor     fiber Bragg grating     optimal design    

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Crack detection for wading-concrete structures using water irrigation and electric heating

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 368-377 doi: 10.1007/s11709-022-0926-x

Abstract: Cracking in wading-concrete structures has a worse impact on structural safety compared with conventional concrete structures. The accurate and timely monitoring of crack development plays a significant role in the safety of wading-concrete engineering. The heat-transfer rate near a crack is related to the flow velocity of the fluid in the crack. Based on this, a novel crack-identification method for underwater concrete structures is presented. This method uses water irrigation to generate seepage at the interface of a crack; then, the heat-dissipation rate in the crack area will increase because of the convective heat-transfer effect near the crack. Crack information can be identified by monitoring the cooling law and leakage flow near cracks. The proposed mobile crack-monitoring system consists of a heating system, temperature-measurement system, and irrigation system. A series of tests was conducted on a reinforced-concrete beam using this system. The crack-discrimination index ψ was defined, according to the subsection characteristics of the heat-source cooling curve. The effects of the crack width, leakage flow, and relative positions of the heat source and crack on ψ were studied. The results showed that the distribution characteristics of ψ along the monitoring line could accurately locate the crack, but not quantify the crack width. However, the leakage flow is sensitive to the crack width and can be used to identify it.

Keywords： structural health monitoring     underwater concrete structure     fiber Bragg grating     crack detection     temperature    

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Structural health monitoring with fiber optic sensors

F. ANSARI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 103-110 doi: 10.1007/s11465-009-0032-y

Abstract: Optical fiber sensors have been successfully implemented in aeronautics, mechanical systems, and medicalbasic principles pertaining to practical health monitoring of civil engineering structures with optical fiber

Keywords： Bridges     structural health monitoring     smart skins     cracks     strains     displacements     fiber optic sensors     FBG    

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Corrugated steel pipe culvert applying in highway and strain measuring with fiber grating test technology

Cheng Gang,Fang Ping

Strategic Study of CAE 2013, Volume 15, Issue 8,   Pages 108-112

Abstract: testing the strain conditions of corrugated steel pipe culvert under different soil fill heights, the fiberBragg grating sensors were set in the inner or outer of corrugated steel pipe culverts.

Keywords： corrugated steel pipe culvert     highway     soft foundation     field test     fiber test    

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Key point selection in large-scale FBG temperature sensors for thermal error modeling of heavy-duty CNC

Jianmin HU, Zude ZHOU, Quan LIU, Ping LOU, Junwei YAN, Ruiya LI

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 4,   Pages 442-451 doi: 10.1007/s11465-019-0543-0

Abstract: Novel temperature sensors based on fiber Bragg grating (FBG) are developed in this study.A total of 128 FBG temperature sensors that are connected in series through a thin optical fiber areKey TMPs are selected using these large-scale FBG temperature sensors by using the density-based spatial

Keywords： thermal error     heavy-duty CNC machine tools     FBG     key TMPs     prediction model    

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Displacement measuring grating interferometer: a review Special Feature on Precision Measurement and Inst

Peng-cheng HU, Di CHANG, Jiu-bin TAN, Rui-tao YANG, Hong-xing YANG, Hai-jin FU

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 5,   Pages 631-654 doi: 10.1631/FITEE.1800708

Abstract:

A grating interferometer, called the “optical encoder,” is a commonly used tool for precise displacementIn contrast to a laser interferometer, a grating interferometer is insensitive to the air refractiveClassified based on the measuring principle and optical configuration, a grating interferometer experiencesCompared with the former two, the spatially separated heterodyne grating interferometer could achieveThe development of incremental displacement measuring grating interferometers achieved in recent years

Keywords： Grating interferometer     Optical encoder     Displacement measurement     Precision measurement    

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Performance of fiber reinforced clayey sand composite

Amin CHEGENIZADEH, Hamid NIKRAZ

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 2,   Pages 147-152 doi: 10.1007/s11709-012-0158-6

Abstract: Recent researches show some interests in investigation of inclusion of randomly distributed fiber instudy is related to effective parameters on strength of the clayey sand composite with using natural fiberand plastic fiber and different fiber contents and length.The fiber percentage varied from 0% (for unreinforced samples) to 4% and fiber length varied from 8 toThe fiber length and fiber content found to play important rule on the strength of fiber reinforced composite

Keywords： triaxial     consolidated undrained (CU)     fiber     strength    

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Mechanical properties of steel, glass, and hybrid fiber reinforced reactive powder concrete

Atheer H.M. ALGBURI, M. Neaz SHEIKH, Muhammad N.S. HADI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 998-1006 doi: 10.1007/s11709-019-0533-7

Abstract: This study examines the properties of fiber-reinforced reactive powder concrete (FR-RPC).Steel fibers of 13 mm length and 0.2 mm diameter were used to prepare the steel fiber-reinforced RPCGlass fibers of 13 mm length and 1.3 mm diameter were used to prepare the glass fiber-reinforced RPCThe hybrid fiber-reinforced RPC (HFR-RPC) was prepared by mixing 0.9% steel fibers and 0.6% glass fibers

Keywords： reactive powder concrete     steel fiber     glass fiber     hybrid fiber    

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The Latest Development of Optical Fiber, Optical Fiber Band and Optical Cable Technology Abroad

Liu Liangyan

Strategic Study of CAE 2001, Volume 3, Issue 9,   Pages 86-94

Abstract: this paper, new development about the study of dispersion-compensable low transmission loss optical fiber, nonzero dispersion displacement optical fiber, and carbon-coated or silicon nitride-coated opticalfiber (applied in bad environment) was comprehensively introduced.Then the manufacture technology of band optical fiber including its structure, coatings, properties andMulti-core optical fiber band cable manufacture technology such as twisted loose-tube, center loose-tube

Keywords： optical communication     low transmission loss optical fiber     optical fiber band     band optical fiber cable    

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Experimental and parametrical investigation of pre-stressed ultrahigh-performance fiber-reinforced concrete

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 411-428 doi: 10.1007/s11709-023-0928-3

Abstract: In this study, ultrahigh-performance fiber-reinforced concrete (UHPFRC) used in a type B70 concrete sleeperThe main parameters investigated are the steel fiber volume fractions (0%, 0.5%, 1%, and 1.5%).study results show that the behavior of UHPFRC sleepers improves significantly when the amount of steel fiberSleepers manufactured using UHPFRC with a steel fiber volume fraction of 1% and a concrete volume less

Keywords： pre-stressed concrete sleeper     ultrahigh performance fiber-reinforced concrete     pull-out test     staticbending test     steel fiber     aspect ratio     volume fraction    

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Studies of fiber-matrix debonding

Navneet DRONAMRAJU,Johannes SOLASS,Jörg HILDEBRAND

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 448-456 doi: 10.1007/s11709-015-0316-8

Abstract: In this paper, the debonding of a single fiber-matrix system of carbon fiber reinforced composite (CFRPtangential slip distance and artificial damping coefficient on the debonding length at the interface of the fiber-matrix

Keywords： single fibre     cohesive zone model     interface debonding     carbon fiber reinforced composite (CFRP)    

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Time- and temperature-dependence of compressive and tensile behaviors of polypropylene fiber-reinforced

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 1025-1037 doi: 10.1007/s11709-021-0741-9

Abstract: The understanding of compressive and tensile behaviors of polypropylene fiber-reinforced cemented paste

Keywords： cemented paste backfill     fiber reinforcement     constitutive behavior     temperature     tailings    

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Fabrication of recyclable Fe chelated aminated polypropylene fiber for efficient clean-up of phosphate

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 7,   Pages 840-852 doi: 10.1007/s11705-022-2253-0

Abstract: Herein, a Fe3+-loaded aminated polypropylene fiber has been reported as an efficient phosphateThe remarkable phosphate removal ability of the fiber is due to Fe3+ immobilization, and itAdsorption experiments showed that the fiber is applicable over a wide pH range from 2 to 9.The adsorption equilibrium of the fiber for phosphate was reached within 60 min, indicating an efficientOverall, this study proves that the fiber possesses many advantages for phosphate removal, including

Keywords： phosphate adsorption     aminated polypropylene fiber     Fe3+     ligand exchange     reusability    

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Title Author Date Type Operation

Monitoring corrosion of reinforcement in concrete structures via fiber Bragg grating sensors

Zhupeng ZHENG, Xiaoning SUN, Ying LEI

Journal Article

Digital monitoring and health diagnosis for mechanical equipment operation safety based on fiber Bragggrating sensor

Zude ZHOU, Desheng JIANG, Quan LIU

Journal Article

Numerical investigation and optimal design of fiber Bragg grating based wind pressure sensor

Xiangjie WANG, Danhui DAN, Rong XIAO, Xingfei YAN

Journal Article

Crack detection for wading-concrete structures using water irrigation and electric heating

Journal Article

Structural health monitoring with fiber optic sensors

F. ANSARI

Journal Article

Corrugated steel pipe culvert applying in highway and strain measuring with fiber grating test technology

Cheng Gang,Fang Ping

Journal Article

Key point selection in large-scale FBG temperature sensors for thermal error modeling of heavy-duty CNC

Jianmin HU, Zude ZHOU, Quan LIU, Ping LOU, Junwei YAN, Ruiya LI

Journal Article

Displacement measuring grating interferometer: a review

Peng-cheng HU, Di CHANG, Jiu-bin TAN, Rui-tao YANG, Hong-xing YANG, Hai-jin FU

Journal Article

Performance of fiber reinforced clayey sand composite

Amin CHEGENIZADEH, Hamid NIKRAZ

Journal Article

Mechanical properties of steel, glass, and hybrid fiber reinforced reactive powder concrete

Atheer H.M. ALGBURI, M. Neaz SHEIKH, Muhammad N.S. HADI

Journal Article

The Latest Development of Optical Fiber, Optical Fiber Band and Optical Cable Technology Abroad

Liu Liangyan

Journal Article

Experimental and parametrical investigation of pre-stressed ultrahigh-performance fiber-reinforced concrete

Journal Article

Studies of fiber-matrix debonding

Navneet DRONAMRAJU,Johannes SOLASS,Jörg HILDEBRAND

Journal Article

Time- and temperature-dependence of compressive and tensile behaviors of polypropylene fiber-reinforced

Journal Article

Fabrication of recyclable Fe chelated aminated polypropylene fiber for efficient clean-up of phosphate

Journal Article