Optical Sensors

Detection of delamination in a composite material based on the measurement of static strain using a surface-mounted fiber Bragg grating sensor

[+] Author Affiliations
Weifeng Rong, Yixin Wang, Jun Hong Ng, Wu Kuang, Varghese Paulose

Institute for Infocomm Research, RF & Optical Department, Singapore 138632

Opt. Eng. 50(1), 014404 (January 14, 2011). doi:10.1117/1.3529436
History: Received July 26, 2010; Revised November 10, 2010; Accepted November 15, 2010; Published January 14, 2011; Online January 14, 2011
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A method to detect delamination in a composite material, using a surface mounted fiber Bragg grating (FBG) sensor, is proposed in this paper. In this method, the static strain is measured to accurately detect the delamination area. Experiments are carried out and results show the relation between the wavelength shift and the distance between the FBG center and the delaminated area. The sensitivity of this method is also discussed. Results show the feasibility of this technique for structural health monitoring applications.

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© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation

Weifeng Rong ; Yixin Wang ; Jun Hong Ng ; Wu Kuang and Varghese Paulose
"Detection of delamination in a composite material based on the measurement of static strain using a surface-mounted fiber Bragg grating sensor", Opt. Eng. 50(1), 014404 (January 14, 2011). ; http://dx.doi.org/10.1117/1.3529436


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