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Proceedings Paper

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

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 9157A0 (2 June 2014); doi: 10.1117/12.2059503
Show Author Affiliations
Hideaki Murayama, The Univ. of Tokyo (Japan)
Xiaoguang Ning, The Univ. of Tokyo (Japan)
Kazuro Kageyama, The Univ. of Tokyo (Japan)
Daichi Wada, The Univ. of Tokyo (Japan)
Hirotaka Igawa, Japan Aerospace Exploration Agency (Japan)

Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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