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Optical-Based Sensors for Monitoring Corrosion of Reinforcement Rebar via an Etched Cladding Bragg Grating
Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
Wireless and Photonics Networks Research Centre, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
* Author to whom correspondence should be addressed.
Received: 30 September 2012; in revised form: 22 October 2012 / Accepted: 11 November 2012 / Published: 14 November 2012
Abstract: In this paper, we present the development and testing of an optical-based sensor for monitoring the corrosion of reinforcement rebar. The testing was carried out using an 80% etched-cladding Fibre Bragg grating sensor to monitor the production of corrosion waste in a localized region of the rebar. Progression of corrosion can be sensed by observing the reflected wavelength shift of the FBG sensor. With the presence of corrosion, the etched-FBG reflected spectrum was shifted by 1.0 nm. In addition, with an increase in fringe pattern and continuously, step-like drop in power of the Bragg reflected spectrum was also displayed.
Keywords: optical based corrosion sensor; etched fibre Bragg grating; Fibre Bragg grating; reinforcement rebar corrosion
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Hassan, M.R.A.; Bakar, M.H.A.; Dambul, K.; Adikan, F.R.M. Optical-Based Sensors for Monitoring Corrosion of Reinforcement Rebar via an Etched Cladding Bragg Grating. Sensors 2012, 12, 15820-15826.
Hassan MRA, Bakar MHA, Dambul K, Adikan FRM. Optical-Based Sensors for Monitoring Corrosion of Reinforcement Rebar via an Etched Cladding Bragg Grating. Sensors. 2012; 12(11):15820-15826.
Hassan, Muhammad R.A.; Bakar, Muhammad H.A.; Dambul, Katrina; Adikan, Faisal R.M. 2012. "Optical-Based Sensors for Monitoring Corrosion of Reinforcement Rebar via an Etched Cladding Bragg Grating." Sensors 12, no. 11: 15820-15826.