Airplane wing deformation and flight flutter detection method by using three-dimensional speckle image correlation technology.
Airplane wing deformation and flight flutter detection method by using three-dimensional speckle image correlation technology.
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DOI：
10.1364/josaa.34.000924
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发表时间：
2017-06
期刊：
影响因子：
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通讯作者：
Jun Wu;Zhijing Yu;Tao Wang;J. Zhuge;Yue Ji;B. Xue
中科院分区：
文献类型：
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作者：
Jun Wu;Zhijing Yu;Tao Wang;J. Zhuge;Yue Ji;B. Xue
飞机机翼变形是飞机制造中气动特性、结构设计和疲劳分析的重要内容，也是飞机颤振认证的主要测试内容。提出了一种利用三维散斑图像相关技术实时检测机翼变形和颤振的方法。通过飞机的振动特性确定其位置的斑点图案涂在机翼上；然后，安装在飞机机舱内的CCD相机对斑点图案进行成像。为了减少计算量，提出了一种基于Geodetic Systems Incorporated编码点与经典极面约束相结合的匹配技术，通过比较变形前后散斑点的坐标，得到飞机机翼的位移矢量图。最后，通过飞机机翼模型的静态和动态验证实验，验证了该方法的准确性和有效性。
Airplane wing deformation is an important element of aerodynamic characteristics, structure design, and fatigue analysis for aircraft manufacturing, as well as a main test content of certification regarding flutter for airplanes. This paper presents a novel real-time detection method for wing deformation and flight flutter detection by using three-dimensional speckle image correlation technology. Speckle patterns whose positions are determined through the vibration characteristic of the aircraft are coated on the wing; then the speckle patterns are imaged by CCD cameras which are mounted inside the aircraft cabin. In order to reduce the computation, a matching technique based on Geodetic Systems Incorporated coded points combined with the classical epipolar constraint is proposed, and a displacement vector map for the aircraft wing can be obtained through comparing the coordinates of speckle points before and after deformation. Finally, verification experiments containing static and dynamic tests by using an aircraft wing model demonstrate the accuracy and effectiveness of the proposed method.