Reinforced concrete structural corrosion monitoring using Hi-Bi photonic crystal fibres in a fiber loop structure

Bravo, M.; McCague, C; Fabian, Matthias; Jaroszewicz, Leszek R.; Mergo, Paweł; Lopez-Amo, M.; Grattan, K. T. V.; Sun, Tao

doi:10.1117/12.2059262

Cited by 6 publications

(3 citation statements)

References 8 publications

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“…Te levels of the resulting broadening were also modeled and assessed [32][33][34][35]. Other in situ corrosion monitoring fber optic sensors use a fber loop interferometer based on a photonic crystal fber (PCF) [44,45], where the pressure/force change instigated by corrosion modulates the birefringence. Another interesting corrosion discovery solution is presented in [46], where a measuring cell employing an unclad sapphire fber waveguide operating in the visible spectral range is capable of detecting iron ions released due to the formation of rust.…”

Section: Introductionmentioning

confidence: 99%

High-Order Fiber Bragg Grating Corrosion Sensor Based on the Detection of a Local Surface Expansion

Budinski

Njegovec

Pevec

et al. 2023

Structural Control and Health Monitoring

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This paper presents a fiber optic sensor for the detection of corrosion processes that occur on metal surfaces. In the proposed sensor design, a sensing fiber with an inscribed high-order Bragg grating is attached to the observed metal surface. A broadening of high-order Bragg grating spectral characteristics is observed and used to detect small and highly localized longitudinal strain variations that occur along the fiber as a result of corrosive rust flakes’ formations beneath the sensing fiber. The proposed approach provides a straightforward fabrication method, the possibility for unobtrusive mounting, including mounting of the sensor beneath the corrosion-protective layers, and consistent corrosion detection yields.

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Section: Introductionmentioning

confidence: 99%

High-Order Fiber Bragg Grating Corrosion Sensor Based on the Detection of a Local Surface Expansion

Budinski

Njegovec

Pevec

et al. 2023

Structural Control and Health Monitoring

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“…Nevertheless, there is continuing interest in their use in a wide variety of structures (e.g. Kister et al, 2007, Thakur et al, 2011, Banerji et al, 2014, Bravo et al, 2014.…”

Section: Introductionmentioning

confidence: 99%

Development of low cost packaged fibre optic sensors for use in reinforced concrete structures

et al. 2019

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There is an ongoing need to measure strains in reinforced concrete structures more reliably and under a range of circumstances e.g. long term durability (such as effects of cracking and reinforcement corrosion), response to normal working loads and response under abnormal load conditions. Fibre optic sensors have considerable potential for this purpose and have the additional advantages, including of immunity to electromagnetic interference and light weight (Grattan et al, 2000). This is important in railway scenarios and particularly so when the lines are electrified. Their small size allows for easy installation. However, their use as commercial 'packaged' devices (traditionally seen as necessary to achieve adequate robustness) is limited by their high cost relative to other sensor devices such as encapsulated electric resistance strain gauges. This paper describes preliminary work to produce a cost-effective and easy-to-use technique for encapsulating fibre optic sensors in resin using 3D printing techniques to produce a robust, inexpensive 'packaged' sensor system suitable for use with concrete structures. The work done to date has shown this to be a convenient and economical way of producing multiple sensors which were suitable for both surface mounting and embedment in reinforced concrete structures. The proof-of-concept testing to which the trial packages were subjected is described in the paper and the results indicate that 3D printed packages have considerable potential for further development and use in a variety of civil engineering applications, competing well with more conventional sensor systems.

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“…McCague et al [ 13 , 14 ] developed another sensor for detection of corrosion of reinforcement bars in concrete. Their concept relies on pressure sensing technique based on the polarization characteristics of a polarization-maintaining photonic crystal fibers (PCF).…”

Section: Introductionmentioning

confidence: 99%

Detection of Internal Metal Loss in Steel Pipes and Storage Tanks via Magnetic-Based Fiber Optic Sensor

Almahmoud

Shiryayev

Vahdati

et al. 2018

Sensors

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A monitoring solution was developed for detection of material loss in metals such as carbon steel using the force generated by permanent magnets in addition to the optical strain sensing technology. The working principle of the sensing system is related to the change in thickness of a steel plate, which typically occurs due to corrosion. As thickness decreases, the magnetostatic force between the magnet and the steel structure also decreases. This, in turn, affects the strain measured using the optical fiber. The sensor prototype was designed and built after verifying its sensitivity using a numerical model. The prototype was tested on steel plates of different thicknesses to establish the relationship between the metal thickness and measured strain. The results of experiments and numerical models demonstrate a strong relationship between the metal thickness and the measured strain values.

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Reinforced concrete structural corrosion monitoring using Hi-Bi photonic crystal fibres in a fiber loop structure

Cited by 6 publications

References 8 publications

High-Order Fiber Bragg Grating Corrosion Sensor Based on the Detection of a Local Surface Expansion

High-Order Fiber Bragg Grating Corrosion Sensor Based on the Detection of a Local Surface Expansion

Development of low cost packaged fibre optic sensors for use in reinforced concrete structures

Detection of Internal Metal Loss in Steel Pipes and Storage Tanks via Magnetic-Based Fiber Optic Sensor

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