Visual monitoring research of airfoil structural based on virtual test technology

The virtual test model method is proposed to solve airfoil structure visual monitoring problem. Static loading test is conducted to obtain the measured strain data; finite element software ANSYS and WORKBENCH are used to simulate airfoil 3D model and obtain the simulation strain data; virtual test model is constructed through fusing measured and simulation strain data by applying Bayes-Kriging method. This model transforms the health monitoring process of structure into a visual fluctuating process of spatial curved surface, which helps realize dynamic observation of the structure state. Structure state model graph is constructed through contrasting the virtual test model and the reference model of health conditioning, which could amplify the strain changes. Then the structure condition could be qualified by the features of model graph. Structure visual monitoring and condition qualification are both realized by the experiment, thus the method of visual test model is proved to be valid.