Calibration method of FBG sensor based on asphalt pavement indoor small size test

Tan, Yiqiu; Hai-peng, Wang; Zong-jie, Sun; Li, Yanwei; Xin, Shi

doi:10.1109/tmee.2011.6199466

Cited by 4 publications

(2 citation statements)

References 1 publication

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“…A number of scholars have conducted extensive studies on the effectiveness of stress-strain measurements using sensors and the correlation between measured strain and theoretical calculated strain using laboratory tests and numerical simulation. Based on the similarity principle, Tan et al measured the effectiveness of the FBG sensor and analyzed the strain coordination performance of different FBG sensors in short-and long-term monitoring based on laboratory tests and finite element models [30]. Zhang et al studied the co-deformation performance of the FBG sensor and asphalt mixture at mesoscale and its influencing factors [31].…”

Section: Fbg Sensormentioning

confidence: 99%

Sensor-Based Structural Health Monitoring of Asphalt Pavements with Semi-Rigid Bases Combining Accelerated Pavement Testing and a Falling Weight Deflectometer Test

Liu,

Cui,

Yang

et al. 2024

Sensors

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The Structural Health Monitoring (SHM) of pavement infrastructures holds paramount significance in the assessment and prognostication of the remaining service life of roadways. In response to this imperative, a methodology for surveilling the surface and internal mechanical responses of pavements was devised through the amalgamation of Accelerated Pavement Testing (APT) and Falling Weight Deflectometer (FWD) examinations. An experimental road segment, characterized by a conventional asphalt pavement structure with semi-rigid bases, was meticulously established in Jiangsu, China. Considering nine distinct influencing factors, including loading speed, loading weight, and temperature, innovative buried and layout configurations for Resistive Sensors and Fiber-optic Bragg Grating (FBG) sensors were devised. These configurations facilitated the comprehensive assessment of stress and strain within the road structure across diverse APT conditions. The methodology encompassed the formulation of response baselines, the conversion of electrical signals to stress and strain signals, and the proposition of a signal processing approach involving partial filtering and noise reduction. In experimental findings, the asphalt bottom layer was observed to undergo alternate tensile strains under dynamic loads (the peak strain was ten με). Simultaneously, the horizontal transverse sensor exhibited compressive strains peaking at 66.5 με. The horizontal longitudinal strain within the base and subbase ranged between 3 and 5 με, with the base registering a higher strain value than the subbase. When subjected to FWD, the sensor indicated a diminishing peak pulse signal, with the most pronounced peak response occurring when the load plate was situated atop the sensor. In summary, a comprehensive suite of monitoring schemes for road structures has been formulated, delineating guidelines for the deployment of road sensors and facilitating sustained performance observation over extended durations.

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Section: Fbg Sensormentioning

confidence: 99%

Sensor-Based Structural Health Monitoring of Asphalt Pavements with Semi-Rigid Bases Combining Accelerated Pavement Testing and a Falling Weight Deflectometer Test

Liu,

Cui,

Yang

et al. 2024

Sensors

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show abstract

“…Tan et al [10] compared the results obtained with FBG sensors and strain gauges to improve the optical sensors' calibration method. By monitoring the dynamic response in three-point bending tests on small beams, the tensile strain of the beam bottom given by the strain gauge was compared with the theoretical results and the results given by the FBG sensors.…”

Section: Introductionmentioning

confidence: 99%

Installation and Use of a Pavement Monitoring System Based on Fibre Bragg Grating Optical Sensors

Rebelo,

Oliveira,

Silva

et al. 2023

Infrastructures

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The evolution of technological tools, namely affordable sensors for data collection, and the growing concerns about maintaining roads in adequate conditions have promoted the development of continuous pavement monitoring systems. This paper presents the installation and use of an innovative pavement monitoring system, which was developed to measure the effects of vehicle loads and temperature on the performance of a pavement structure. The sensors used are based on fibre Bragg grating optical technology, collecting data about the strains imposed in the pavement and the temperature at which those measurements are made. The site selection for the system’s installation and the essential installation details to ensure successful data collection are addressed. A calibration procedure was implemented by performing falling weight deflectometer tests and passing preweighed heavy vehicles over the sensors. In addition to validating the system installation, the results obtained in the calibration confirmed the importance of adequately choosing the distance between sensors. Differences of 50 mm in the position of the load may cause differences of about 20% to 25% in the resulting strains. These results confirmed the importance of increasing the sensor concentration in wheel paths. Furthermore, for loads between 25 kN and 65 kN, raising the temperature by 8 °C caused an increase of about 20% in the horizontal tensile strains measured in the pavement. In summary, it was possible to conclude that this innovative system is capable of capturing the effects of temperature and vehicle speed on the response of the pavement, which may be considered an advantage of this type of monitoring system when compared to those that are only used to determine the loads applied to the pavement or to characterise the type of vehicle.

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The cooperative deformation test of an embedded FBG sensor and strain correction curve verification

Liao

Liang

Luo

et al. 2022

Construction and Building Materials

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Calibration method of FBG sensor based on asphalt pavement indoor small size test

Cited by 4 publications

References 1 publication

Sensor-Based Structural Health Monitoring of Asphalt Pavements with Semi-Rigid Bases Combining Accelerated Pavement Testing and a Falling Weight Deflectometer Test

Sensor-Based Structural Health Monitoring of Asphalt Pavements with Semi-Rigid Bases Combining Accelerated Pavement Testing and a Falling Weight Deflectometer Test

Installation and Use of a Pavement Monitoring System Based on Fibre Bragg Grating Optical Sensors

The cooperative deformation test of an embedded FBG sensor and strain correction curve verification

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