From Event: SPIE Optical Engineering + Applications, 2018
3D displacement and strain measurement for the fast flapping wings is of crucial importance to micro air vehicle design. This research introduces a high-resolution photomechanics testing method for robotic flapping wings. First, the dynamic 3D shape of a fast flapping flight process is reconstructed by the high-speed structured light technique with defocused binary stripe illumination. Then, the 3D displacement map is extracted through geodesic analysis. Finally, the Green- Lagrange strain tensor is computed by Kirchhoff-Love shell theory. Experiments will demonstrate the success of the method by testing a robotic bird with a wings’ flapping frequency over 20 cycles/second.
Beiwen Li, "High-resolution 3D shape deformation, displacement, and strain measurement for robotic flapping wings," Proc. SPIE 10749, Interferometry XIX, 107490E (Presented at SPIE Optical Engineering + Applications: August 21, 2018; Published: 18 August 2018); https://doi.org/10.1117/12.2321656.
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