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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 fibersensors.sensor packaging, sensor placement in construction environment, and reliability and survivability of the sensors

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

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A novel heavy haul train on road safety status monitoring technique based on fiber laser sensors

Du Yanliang,Zhang Wentao

Strategic Study of CAE 2009, Volume 11, Issue 10, Pages 61-66

Abstract: style="text-align: justify;">A novel heavy haul train safety status monitoring technique based on the fiberlaser sensors was proposed in this paper.The principles of the fiber laser sensors were introduced and the schematic of the heavy haul train safetyThe key technologies of the monitoring system were focused, such as the high-performance fiber laser

Keywords： fiber laser heavy haul train safety status on road

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Analysis of seepage monitoring for an earth dam model with distributed optical fiber sensors

Zhu Pingyu,Jiang Guilin,Leng Yuanbao

Strategic Study of CAE 2011, Volume 13, Issue 3, Pages 82-85

Abstract: system of seepage and settlement for an earth embankment dam model using fully distributed optical fiberThe strain curve of the tested optical fiber is obtained from the device in the experiment.The results certify the feasibility of the monitoring system based on distributed optical fiber sensingThe relationship between the load applied on the earth dam model and the strain of optical fiber sensorssensors.

Keywords： optical fiber sensing technology earth dam model monitoring strain ANSYS

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Rapid thermal sensors with high resolution based on an adaptive dual-comb system Special Feature on Precision Measurement and Inst

Yi-zheng GUO, Ming YAN, Qiang HAO, Kang-wen YANG, Xu-ling SHEN, He-ping ZENG

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 5, Pages 674-684 doi: 10.1631/FITEE.1800347

Abstract: high-resolution rapid thermal sensing based on adaptive dual comb spectroscopy interrogated with a phase-shifted fiberInstead, two free-running fiber lasers are adopted as the light sources.

Keywords： Interferometers Fiber sensors Laser spectroscopy

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Special issue on “Molecular Sensors and Molecular Logic Gates”

Luling Wu , Tony D. James

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 1, Pages 1-3 doi: 10.1007/s11705-021-2134-y

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High resolution satellite imaging sensors for precision agriculture

Chenghai YANG

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 4, Pages 393-405 doi: 10.15302/J-FASE-2018226

Abstract: Various types of remote sensors carried on ground-based platforms, manned aircraft, satellites, and moreRecent developments in high resolution satellite sensors have significantly narrowed the gap in spatialThis article will provide an overview of commercially available high resolution satellite sensors thatSome challenges and future directions on the use of high resolution satellite sensors and other typesof remote sensors for precision agriculture are discussed.

Keywords： high resolution satellite sensor multispectral imagery precision agriculture spatial resolution temporal resolution

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Modeling and analysis of controllable output property of cantilever-beam inertial sensors based on magnetic

Guixiong LIU, Peiqiang ZHANG, Chen XU

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2, Pages 129-133 doi: 10.1007/s11465-009-0035-8

Abstract: cantilever-beam and the novel controllable mag-viscosity of magnetic fluid, the output of cantilever-beam sensorsis under control so that the controllable output of the sensors can be realized.The mathematical model of the sensors is established and analyzed.The result shows that it is valid to realize the controllable output of the sensors by controlling the

Keywords： sensors magnetic fluid property of mag-viscosity controllable output

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Soft curvature sensors for measuring the rotational angles of mechanical fingers

Haixiao LIU, Li LI, Zhikang OUYANG, Wei SUN

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4, Pages 610-621 doi: 10.1007/s11465-020-0596-0

Abstract: The design, fabrication, and testing of soft sensors that measure elastomer curvature and mechanicalThe base of the soft sensors is polydimethylsiloxane (PDMS), which is a translucent elastomer.The main body of the soft sensors consists of three layers of silicone rubber plate, and the sensingFirst, the working principle of soft sensors is investigated, and their structure is designed.Lastly, the soft sensors are applied to the measurement of mechanical finger bending.

Keywords： soft sensor Ga-In-Sn alloy strain sensing curvature sensing mechanical finger bending

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MEMS-based thermoelectric infrared sensors: A review

Dehui XU, Yuelin WANG, Bin XIONG, Tie LI

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 4, Pages 557-566 doi: 10.1007/s11465-017-0441-2

Abstract:

In the past decade, micro-electromechanical systems (MEMS)-based thermoelectric infrared (IR) sensorsThis paper presents a review of MEMS-based thermoelectric IR sensors.sensing materials, thermal isolation microstructures, absorber designs, and packaging methods for these sensors

Keywords： thermoelectric infrared sensor CMOS-MEMS thermopile micromachining wafer-level package

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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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Situational Awareness in Construction and Facility Management

Burcu Akinci

Frontiers of Engineering Management 2014, Volume 1, Issue 3, Pages 283-289 doi: 10.15302/J-FEM-2014037

Abstract: Engineers and managers involved in construction and facility/infrastructure operations need situational awareness about the as-is conditions when making daily decisions and developing short- and long-term plans. Yet, currently situational awareness of engineers is often challenged due to missing data and the available data not being in a format that is easily accessible and actionable. Advances in reality capture technologies, such as 3-dimensional (3D) imaging, in-situ sensing, equipment on-board instrumentation and electronic tagging, streamline the capturing of the as-is conditions on job sites. The data collected from these technologies, integrated with building information models depicting the as-planned conditions, can help in creating and storing the history of as-is conditions of a facility to support a variety of decisions that engineers and managers need to make. While the opportunities associated with integrating building information models and data capture technologies are compelling, several challenges need to be addressed through research for effective usage of these technologies. Such challenges include assessing the accuracy of the data collected at the field, developing and evaluating data processing and data fusion approaches, formalizing integrated representation of building information models and sensor and other relevant data, and investigating and developing approaches for analyzing and visualizing such integrated information models. This paper provides examples of recent research studies done at the Civil and Environmental Engineering Department at Carnegie Mellon University that demonstrate opportunities associated with integrating building information models and sensor information for facility operations.

Keywords： building information models (BIM) sensors facility operations and management construction management

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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)