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

Cai Hui Tan, Faisal Rafiq Mahamd Adikan, Yu Gang Shee, Boon Kar Yap

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Steel 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.

Original languageEnglish
Pages (from-to)61-67
Number of pages7
JournalSensors and Actuators, A: Physical
Volume268
DOIs
Publication statusPublished - 01 Dec 2017

Fingerprint

structural health monitoring
Structural health monitoring
Fiber Bragg gratings
Bragg gratings
corrosion
Corrosion
fibers
Sensors
Wavelength
Steel corrosion
sensors
Corrosion rate
shift
wavelengths
Coatings
Monitoring
Hydrogel
Fiber optic sensors
Steel structures
steels

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

Cite this

@article{c40ec2402aae4141a66bcd625401e5d4,
title = "Non-destructive fiber Bragg grating based sensing system: Early corrosion detection for structural health monitoring",
abstract = "Steel 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.",
author = "Tan, {Cai Hui} and {Mahamd Adikan}, {Faisal Rafiq} and Shee, {Yu Gang} and Yap, {Boon Kar}",
year = "2017",
month = "12",
day = "1",
doi = "10.1016/j.sna.2017.10.048",
language = "English",
volume = "268",
pages = "61--67",
journal = "Sensors and Actuators, A: Physical",
issn = "0924-4247",
publisher = "Elsevier",

}

Non-destructive fiber Bragg grating based sensing system : Early corrosion detection for structural health monitoring. / Tan, Cai Hui; Mahamd Adikan, Faisal Rafiq; Shee, Yu Gang; Yap, Boon Kar.

In: Sensors and Actuators, A: Physical, Vol. 268, 01.12.2017, p. 61-67.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Non-destructive fiber Bragg grating based sensing system

T2 - Early corrosion detection for structural health monitoring

AU - Tan, Cai Hui

AU - Mahamd Adikan, Faisal Rafiq

AU - Shee, Yu Gang

AU - Yap, Boon Kar

PY - 2017/12/1

Y1 - 2017/12/1

N2 - Steel 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.

AB - Steel 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.

UR - http://www.scopus.com/inward/record.url?scp=85032802034&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85032802034&partnerID=8YFLogxK

U2 - 10.1016/j.sna.2017.10.048

DO - 10.1016/j.sna.2017.10.048

M3 - Article

AN - SCOPUS:85032802034

VL - 268

SP - 61

EP - 67

JO - Sensors and Actuators, A: Physical

JF - Sensors and Actuators, A: Physical

SN - 0924-4247

ER -