22 June 2015 The application of vision measurement in aerodynamic testing combined with speckle correlation
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Abstract
This paper presents a combination of visual measurement technique of speckle correlation method in aerodynamic test application. Modal analysis of aerodynamic testing and deformation measurement is often very important but very difficult to achieve, fortunately, the development of modern optical measurement techniques made it possible. First, we conduct the modal analysis on an airfoil model and its deformation analysis under certain conditions. Then, the above technique was used to verify it. The results of the aerodynamic test and finite element analysis agree well, The novel of the new method is combining the speckle correlation and the model deformation in the aerodynamic testing. This method using the speckle correlation to process the data, combining sub-pixel correlation can make the results achieve very high precision and realized the real planar measuring. This non-contact full-field optical metrology shows a lot of abstracting potentials in aerodynamic test applications.
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Ding Chen, Ding Chen, Jin-guo Zhang, Jin-guo Zhang, Ye-hua Zhang, Ye-hua Zhang, Wei Wang, Wei Wang, Hong-qiang Ma, Hong-qiang Ma, Shang-bin Zhang, Shang-bin Zhang, Jia-bo Feng, Jia-bo Feng, } "The application of vision measurement in aerodynamic testing combined with speckle correlation", Proc. SPIE 9530, Automated Visual Inspection and Machine Vision, 953006 (22 June 2015); doi: 10.1117/12.2184614; https://doi.org/10.1117/12.2184614
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