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17 October 2012 Distributed strain and load monitoring of 6 m composite wing structure by FBG arrays and long-length FBGs
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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84212D (2012) https://doi.org/10.1117/12.970292
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China
Abstract
We equipped a composite wing structure fiber Bragg grating (FBG) arrays including 246 FBGs with 10 mm gauge length, eight and six long-length FBGs with 300 mm and 500 mm, respectively. The length of the wing was 6 m and it was made of carbon fiber reinforced plastics (CFRP). The sensing system based on optical frequency domain reflectometry (OFDR) was used in a series of load tests. The measured results by FBG arrays showed the overall deformation of the wing and good agreement with analysis results. Additionally, strain distributions of stress concentration zones were successfully measured by long-length FBGs.
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Hideaki Murayama, Kazuki Tachibana, Yoshiyasu Hirano, Hirotaka Igawa, Kazuro Kageyama, Kiyoshi Uzawa, and Toshiya Nakamura "Distributed strain and load monitoring of 6 m composite wing structure by FBG arrays and long-length FBGs", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84212D (17 October 2012); https://doi.org/10.1117/12.970292
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