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Non-destructive fiber Bragg grating based sensing system: Early corrosion detection for structural health monitoring

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dc.citedby19
dc.contributor.authorTan C.H.en_US
dc.contributor.authorMahamd Adikan F.R.en_US
dc.contributor.authorShee Y.G.en_US
dc.contributor.authorYap B.K.en_US
dc.contributor.authorid57189468183en_US
dc.contributor.authorid14919275400en_US
dc.contributor.authorid33568302600en_US
dc.contributor.authorid26649255900en_US
dc.date.accessioned2023-05-29T06:37:29Z
dc.date.available2023-05-29T06:37:29Z
dc.date.issued2017
dc.descriptionAlkalinity; Bragg gratings; Coatings; Corrosion; Corrosion rate; Electric sensing devices; Fiber optic sensors; Hydrogels; Microchannels; Pulse width modulation; Steel corrosion; Steel fibers; Strain rate; Structural health monitoring; Bragg wavelength shift; Corrosion detection; Environment conditions; Fiber Bragg Grating Sensors; Mechanical expansion; pH-sensitive hydrogel; Real time monitoring; Sensitivity performance; Fiber Bragg gratingsen_US
dc.description.abstractSteel corrosion is known as one of the major structural defects in steel structures such as pipelines. The high resolution of fiber Bragg grating (FBG) sensor and its ability to provide real-time monitoring make it a potential candidate for steel corrosion detection. Nevertheless, fiber optic sensor is now been widely used in civil engineering for structural health monitoring purpose. In this study, a non-destructive corrosion detection approach is developed using FBG sensors. The sensor comprises FBG coated with mixed pH-sensitive hydrogel and PDMS strain-sensitive coating. FBG sensors were embedded on the specimen to monitor the expansion strain caused by rebar corrosion. Specimens were placed in different environment conditions namely air, acidic and alkaline conditions, to experience different corrosion rate. The sensing principle is based on a Bragg wavelength shifts resulted from the induced strain on the FBG due to mechanical expansion and swells, in response to the changes in pH of the coating materials. A significant wavelength shift occurred at about day 20, inducing wavelength shift of 0.27 nm, 0.06 nm and 0.011 nm under acidic, air and alkaline conditions respectively. The relationship between wavelength shift, corrosion rate and strain induced is investigated and validated through this experiment. These sensors can be installed for real-time monitoring and early corrosion detection due to its non-destructive and highly sensitivity performance. � 2017 Elsevier B.V.en_US
dc.description.natureFinalen_US
dc.identifier.doi10.1016/j.sna.2017.10.048
dc.identifier.epage67
dc.identifier.scopus2-s2.0-85032802034
dc.identifier.spage61
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85032802034&doi=10.1016%2fj.sna.2017.10.048&partnerID=40&md5=3d19555b1ad2f4df001a38837c452e2d
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/23028
dc.identifier.volume268
dc.publisherElsevier B.V.en_US
dc.sourceScopus
dc.sourcetitleSensors and Actuators, A: Physical
dc.titleNon-destructive fiber Bragg grating based sensing system: Early corrosion detection for structural health monitoringen_US
dc.typeArticleen_US
dspace.entity.typePublication
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