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Effect of disbond propagation on the reflected spectra of CFBG sensors embedded within the bondline of composite bonded joints

Guo, Y, Ogin, SL, Capell, TF, Thorne, AM, Reed, GT, Wang, Y and Tjin, SC (2009) Effect of disbond propagation on the reflected spectra of CFBG sensors embedded within the bondline of composite bonded joints Advanced Materials Research, 79-82. 2067 - 2070. ISSN 1022-6680

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Abstract

Chirped fiber Bragg grating (CFBG) sensors were embedded within the adhesive bondline of single-lap CFRP-GFRP bonded composite joints. The effect of disbond propagation (as a consequence of fatigue loading) on the reflected spectra from the CFBG sensor has been studied. As the disbond propagates, thermal strains generated during the bonding of the joint at elevated temperature are released and, as a consequence, a peak in the reflected spectra of the CFBG sensor can be seen. Using a transparent GFRP adherend, it has been possible to demonstrate that there is reasonable agreement between the position of the peak in the reflected spectrum and the disbond front position in the bonded joint.

Item Type: Article
Additional Information: Copyright 2009 Trans Tech Publications. This is the author's accepted version.
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Photonics
Depositing User: Symplectic Elements
Date Deposited: 05 Oct 2012 16:43
Last Modified: 09 Jun 2014 13:15
URI: http://epubs.surrey.ac.uk/id/eprint/722270

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