17 July 2015 Surface deformation monitoring and reconstruction of honeycomb structure based on FBG sensors
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Proceedings Volume 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015); 95241H (2015) https://doi.org/10.1117/12.2189458
Event: International Conference on Optical and Photonic Engineering (icOPEN2015), 2015, Singapore, Singapore
Abstract
Honeycomb structure with high stiffness and light weight is expected to be more applied in the field of morphing wing. We propose a surface reconstruction algorithm based on FBG sensors to reconstruct the surface deformation of honeycomb structure real-timely and rapidly. When flexible honeycomb cores are driven by SMA actuators, the surface curvature monitored by FBG sensing array can be inferred from the changes of central wavelength. According to the surface reconstruction algorithm we proposed, the surface shape can be reconstructed. Composite single-row honeycomb structure specimen consisting of 8 cores, whose cell walls length and thickness is 8mm and 2mm respectively, is bended by electrified SMA actuators into the new steady shape. The experiment shows that the reconstructed surface shape has great agreement with the visual recording surface shape and the error is 5.76% on average.
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Shulin Liu, Jiyun Lu, Zhaoyu Zheng, "Surface deformation monitoring and reconstruction of honeycomb structure based on FBG sensors", Proc. SPIE 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015), 95241H (17 July 2015); doi: 10.1117/12.2189458; https://doi.org/10.1117/12.2189458
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