Development of CCD Moire method to measure high speed deformation

提出了一种利用高速数码相机进行云纹成像的新方法。采用带固态图像传感器读出单元的数字高速摄像机，观察试样在冲击试验过程中的云纹条纹。模型网格采用极细金属网格，主网格采用固态图像传感器读出单元的像素阵列。与使用主网格的其他高速云纹方法相比，可以减少云纹图像的像素数，缩短每个图像的间隔。

A new moire method using high speed digital camera has been developed. A digital high-speed camera with a solid state image sensor readout unit was used to observe the moire fringes of the specimen during an impact test. The very fine metallic mesh was used for the model grid and the pixel array of the solid state image sensor readout unit was used for the master grid. Comparing to the other high-speed moire method using a master grid, it is possible that a number of pixels for a moire image can be decrease and the interval of each image shorten.