Analysis of Fiber Optic Traffic Sensors in Flexible Pavements

Cosentino, Paul J.; Eckroth, Wulf von; Grossman, Barry G.

doi:10.1061/(asce)0733-947x(2003)129:5(549)

Cited by 19 publications

(5 citation statements)

References 1 publication

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“…Cosentino et al [71] incorporated the use of fiber optic sensors for traffic classification. The operating speed of test traffic was kept at 8 km/h.…”

Section: Traffic Monitoringmentioning

confidence: 99%

Pavement Sensing Systems : Literature Review

Fahad

Nagy

Gosztola

2022

Civil and Environmental Engineering

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In situ monitoring of pavement health has been getting much attention due to the efficiency, reliability and accuracy of data. This review consists of various embedded as well as nondestructive sensing options that have been used to perform analysis on pavement health either by simply calculating horizontal and vertical strains under pavement layers or by crack detection models inside pavement structures by supplementing information from moisture, temperature and traffic related sensors. With optimum integration of such combination sensors, engineers can predict the optimum rehabilitation time of the pavements and reduce a huge amount of budget spent on infrastructure reconstruction.

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“…Cosentino et al [71] incorporated the use of fiber optic sensors for traffic classification. The operating speed of test traffic was kept at 8 km/h.…”

Section: Traffic Monitoringmentioning

confidence: 99%

Pavement Sensing Systems : Literature Review

Fahad

Nagy

Gosztola

2022

Civil and Environmental Engineering

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“…On the other hand, to obtain a good coordinate deformation with the asphalt pavement structure, the protective layer of the optical fiber sensor should use packaging material with low Young's modulus. Epoxy was used to package the optical fiber microbend sensor and placed on an aluminum plate to measure the deflection of asphalt pavement in this study (Consentino et al 2003). Since epoxy has limited compression capacity during the construction process, the protective layer was further improved by using fiber reinforced polymer (FRP).…”

Section: Measurement Science and Technologymentioning

confidence: 99%

Strain transfer analysis of optical fiber based sensors embedded in an asphalt pavement structure

Wang

Xiang

2016

Meas. Sci. Technol.

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Asphalt pavement is vulnerable to random damage, such as cracking and rutting, which can be proactively identified by distributed optical fiber sensing technology. However, due to the material nature of optical fibers, a bare fiber is apt to be damaged during the construction process of pavements. Thus, a protective layer is needed for this application. Unfortunately, part of the strain of the host material is absorbed by the protective layer when transferring the strain to the sensing fiber. To account for the strain transfer error, in this paper a theoretical analysis of the strain transfer of a three-layered general model has been carried out by introducing Goodman’s hypothesis to describe the interfacial shear stress relationship. The model considers the viscoelastic behavior of the host material and protective layer. The effects of one crack in the host material and the sensing length on strain transfer relationship are been discussed. To validate the effectiveness of the strain transfer analysis, a flexible asphalt-mastic packaged distributed optical fiber sensor was designed and tested in a laboratory environment to monitor the distributed strain and appearance of cracks in an asphalt concrete beam at two different temperatures. The experimental results indicated that the developed strain transfer formula can significantly reduce the strain transfer error, and that the asphalt-mastic packaged optical fiber sensor can successfully monitor the distributed strain and identify local cracks.

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“…Fibre optic sensors have many advantages, such as high accuracy, ease of installation, small size, flexibility, cost-effectiveness, resistance to electromagnetic interference and corrosion, multiplexing capability, and great potential in long-term continuous measurements [ 11 , 12 , 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Fibre Optic FBG Sensors for Monitoring of the Temperature of the Building Envelope

Juraszek

Antonik-Popiołek

2021

Materials

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Standard sensors for the measurement and monitoring of temperature in civil structures are liable to mechanical damage and electromagnetic interference. A system of purpose-designed fibre optic FBG sensors offers a more suitable and reliable solution—the sensors can be directly integrated with the load-bearing structure during construction, it is possible to create a network of fibre optic sensors to ensure not only temperature measurements but also measurements of strain and of the moisture content in the building envelope. The paper describes the results of temperature measurements of a building 2-layer wall using optical fibre Bragg grating (FBG) sensors and of a three-layer wall using equivalent classical temperature sensors. The testing results can be transmitted remotely. In the first stage, the sensors were tested in a climatic test chamber to determine their characteristics. The paper describes test results of temperature measurements carried out in the winter season for two multilayer external walls of a building in relation to the environmental conditions recorded at that time, i.e., outdoor temperature, relative humidity, and wind speed. Cases are considered with the biggest difference in the level of the relative humidity of air recorded in the observation period. It is found that there is greater convergence between the theoretical and the real temperature distribution in the wall for high levels (~84%) of the outdoor air relative humidity, whereas at the humidity level of ~49%, the difference between theoretical and real temperature histories is substantial and totals up to 20%. A correction factor is proposed for the theoretical temperature distribution.

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Analysis of Fiber Optic Traffic Sensors in Flexible Pavements

Cited by 19 publications

References 1 publication

Pavement Sensing Systems : Literature Review

Pavement Sensing Systems : Literature Review

Strain transfer analysis of optical fiber based sensors embedded in an asphalt pavement structure

Fibre Optic FBG Sensors for Monitoring of the Temperature of the Building Envelope

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