Tilted Fiber Bragg Grating Sensors for Reinforcement Corrosion Measurement in Marine Concrete Structure

Islam, Md. Rajibul; Bagherifaez, Marya; Ali, Muhammad Mahmood; Chai, Hwa Kian; Lim, Kok-Sing; Ahmad, Harith

doi:10.1109/tim.2015.2459511

Cited by 27 publications

(11 citation statements)

References 35 publications

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“…In an RC inspection context, FBG sensors provided a good indication of the reference corrosion rate for application in civil infrastructures, such as pre-stressed structures [87] and marine concrete structure [88]. Furthermore, some novel sensors were designed to show an example of great use of FBG.…”

Section: Physical Methodsmentioning

confidence: 99%

A Recent Progress of Steel Bar Corrosion Diagnostic Techniques in RC Structures

Luo

Jun-nan

et al. 2018

Sensors

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Corrosion of steel bar is one of key factors undermining reinforced concrete (RC) structures in a harsh environment. This paper attempts to review the non-destructive procedures from the aspect of the corrosion measurement techniques, especially their advantages and limitations. Systematical classification of diagnostic methods is carried out to determine any probable corrosion issues before the structures become severe, and helps choose the suitable method according to different construction features. Furthermore, the three electrochemical factors method is introduced to inspire researchers to combine various techniques to improve corrosion evaluation accuracy. The recommendations for future work are summarized, in conclusion.

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Section: Physical Methodsmentioning

confidence: 99%

A Recent Progress of Steel Bar Corrosion Diagnostic Techniques in RC Structures

Luo

Jun-nan

et al. 2018

Sensors

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“…When the FBG is subjected to external perturbations, the grating period increases or decreases, and hence, the Bragg wavelength increases or decreases, respectively. The wavelengths’ drift (

) induced by the temperature change (

) and strain change (

) is given by:

where Δλ B is the change in the Bragg wavelength; and

and

are the temperature and strain sensitivity coefficients, respectively [ 8 ].…”

Section: Principle Of Fbg Sensormentioning

confidence: 99%

“…Usually, the offshore structures are built for the production and transmission of electricity, oil, gas, and other resources. Due to the complexity and high cost of offshore structures, it is indispensable to monitor their health state in the marine environment [ 7 , 8 ]. An FPSO (floating, production, storage, and offloading unit) is a floating vessel used by the offshore oil and gas industry for the production and processing of hydrocarbons, and could be in service in remote and deep waters for a continuous period of 20 years [ 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Selection and Characterization of Packaged FBG Sensors for Offshore Applications

Maheshwari

Yang

et al. 2018

Sensors

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With the development in the exploitation of maritime resources, the structural health monitoring (SHM) of offshore structures becomes necessary. This study focuses on addressing the practical issues of application of fiber Bragg grating (FBG) sensors for the SHM of offshore structures, in particular an FPSO (floating, production, storage, and offloading unit) vessel. Due to the harsh marine environment and tough working conditions, the FBG sensors must have sufficient protection and good repeatability for long-term monitoring. Thorough research has been conducted to identify the most suitable, commercially available protection packaging for FBG sensors for offshore applications. Further, the performance of the selected FBG sensor packaging is tested under conditions of strong sunlight, heavy rain, and salty water in order to emulate the marine environment. Moreover, the installation method of the packaged FBG sensors is equally important, as it ensures the repeatability and durability of the sensors for their long-term performance. It is shown that the packaged FBG sensors can be installed using resin-based epoxy to maintain the repeatability of the sensor over the long-term. Further, the packaged FBG sensors are installed and tested on a simple FPSO model. The experimental results under full load and ballast draft conditions show that the proposed FBG sensors are competent for the SHM of offshore structures.

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“…Tilted FBG or laser ablated clad grating fiber sensors can be used for the monitoring of corrosion of steel reinforcement in wet condition based on the surrounding refractive index (SRI) variation of the chemical or electrochemical transformation that take place in corrosion process see [11], [12], and [13]. In this paper a new approach is introduced to monitor corrosion process of steel reinforcement in concrete by bare FBG strain sensor.…”

Section: Several Non-destructive Tests (Ndt) Have Been Developed For mentioning

confidence: 99%

Monitoring Corrosion Process of Reinforced Concrete Structure Using FBG Strain Sensor

Assala

Chai

Islam

et al. 2017

IEEE Trans. Instrum. Meas.

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Major factor effects the durability of a concrete structures is cracks formation induced by expansion of reinforcement corrosion. Therefore, monitoring and evaluating the corrosion level of structure is essential for its safety. In order to monitor corrosion, an innovative methodology based on Fiber Bragg Grating sensing technique was developed and tested in this paper. The method uses the volume of corrosion products to detect the evolution of corrosion. The corrosion process was accelerated by impressed current technique. A correlation between the FBG wavelength shift and corrosion percentage of reinforcement was found.

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Tilted Fiber Bragg Grating Sensors for Reinforcement Corrosion Measurement in Marine Concrete Structure

Cited by 27 publications

References 35 publications

A Recent Progress of Steel Bar Corrosion Diagnostic Techniques in RC Structures

A Recent Progress of Steel Bar Corrosion Diagnostic Techniques in RC Structures

Selection and Characterization of Packaged FBG Sensors for Offshore Applications

Monitoring Corrosion Process of Reinforced Concrete Structure Using FBG Strain Sensor

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