Electromagnetic sensors for assessing and monitoring civil infrastructures

Wang, M.L.; Wang, G.

doi:10.1533/9780857099136.238

Cited by 12 publications

(2 citation statements)

References 28 publications

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“…However, considering the critical influence of friction between the cable and the embedded pipe on the measured value, such methods are rarely used in practical scenarios. A magnetic flux sensor has favorable application prospects and is suitable for measuring a static cable force with a measurement accuracy of 3–8% [ 14 ]. Fiber Bragg grating intelligent strand cables and strain gauge-equipped intelligent steel strand cables [ 15 , 16 , 17 ] have not been promoted on a large scale, because it is difficult to paste fiber gratings and strain gauges on steel strands; moreover, the problem of detachment due to glue aging [ 18 ] also persists.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Mechanical Properties and Temperature Compensation of a Spot-Welded Strain Sensor within an Intelligent Steel Strand Cable

Deng,

Hu,

Liu

et al. 2024

Sensors

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According to current regulations, welding is strictly prohibited for prestressed and tension cables. In response, this article proposes the use of a portable spot-welding machine to spot weld steel strands. This method generates a small current during spot welding, with a voltage of only 3 V to 5 V, and does not damage the internal structure of the steel strand. To effectively monitor cable tension in cable-supported structures, a novel approach utilizing a chip-based, encapsulated spot-welded strain sensor was investigated. The strain sensing capability, temperature sensitivity, stress relaxation, and static load responses were investigated on the proposed smart steel strand cables with spot-welded strain sensors. The theoretical analyses and finite element simulations revealed that the strain transfer efficiency of the spot-welded strain sensor exceeded 96%. The experimental results demonstrated that the load-strain relationship of the smart steel strand cable had a fitting degree greater than 0.999, and the tension errors obtained under different loads were within 1.26%. The tension full capacity errors measured at different temperatures were generally within 1.0%. The relaxation rate of the smart steel strand cable after 120 h was 3.78% and reduced the sensor accuracy error by 3.97%. Thus, the proposed strain sensor equipped with a smart steel strand cable is suitable for use in long-term tension monitoring.

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Section: Introductionmentioning

confidence: 99%

Investigating the Mechanical Properties and Temperature Compensation of a Spot-Welded Strain Sensor within an Intelligent Steel Strand Cable

Deng,

Hu,

Liu

et al. 2024

Sensors

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“…1 Advancement in instrumentation, progress in microelectronics and computers have made it possible to design various types of sensors by utilizing principles of physics and chemistry. 2,3 Based on the method adopted to measure the effect during sensing, sensors are classified into optical, [4][5][6][7] electrochemical, 8,9 mechanical, 10 thermometric, 11 mass sensitive, 12 magnetic [13][14][15] etc. Sensors are also classified according to the application to determine a given analyte.…”

mentioning

confidence: 99%

Review—Biomass Derived Carbon Materials for Electrochemical Sensors

Bhat

Supriya²,

Hegde³

2020

J. Electrochem. Soc.

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Sensors have become integral part of our lives. Electrochemical sensors are the oldest and the most commercially used sensors. Biomass carbonization by pyrolysis and hydrothermal methods are discussed as a cost-effective strategy for fabrication of electrodes for electrochemical sensing applications. Porosity and surface area along with graphitic nature of bio derived carbon materials greatly affects the performance of electrochemical sensors. Various techniques are used to improve the surface properties so as to enhance the electrocatalytic behavior of working electrodes. Synthetic and bioderived carbon materials are compared for their electrochemical sensing applications.

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