Dynamic measurement of inside strain distributions in adhesively bonded joints by embedded fiber Bragg grating sensor

Hideaki Murayama; Xiaoguang Ning; Kazuro Kageyama; Daichi Wada; Hirotaka Igawa

doi:10.1117/12.2059503

2 June 2014 Dynamic measurement of inside strain distributions in adhesively bonded joints by embedded fiber Bragg grating sensor

Hideaki Murayama, Xiaoguang Ning, Kazuro Kageyama, Daichi Wada, Hirotaka Igawa

Author Affiliations +

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 9157A0 (2014) https://doi.org/10.1117/12.2059503
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

Long-length fiber Bragg grating (FBG) with the length of about 100 mm was embedded onto the surface of a carbon fiber reinforced plastics (CFRP) substrate and two CFRP adherends were joined by adhesive to form an adhesive bonded single-lap joint. The joint was subjected to 0.5 Hz cyclic tensile load and longitudinal strain distributions along FBG were measured at 5 Hz by the fiber-optic distributed sensing system based on optical frequency domain reflectometry (OFDR). We could successfully monitor the strain distributions accurately with high spatial resolution of around 1 mm.

Citation Download Citation

Hideaki Murayama, Xiaoguang Ning, Kazuro Kageyama, Daichi Wada, and Hirotaka Igawa "Dynamic measurement of inside strain distributions in adhesively bonded joints by embedded fiber Bragg grating sensor", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 9157A0 (2 June 2014); https://doi.org/10.1117/12.2059503

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