Abstract

In order to study the high-speed deformation of materials, a high-speed digital video camera is developed by using a new MOS-type solid-state image sensor. The frame speed is controlled by a personal computer, and the maximum frame speed is 300000frames/s. The digital image taken by the high speed video camera is analyzed by an image-processing system using a personal computer. In order to analyze strain rate distribution, a new grid method using a Fourier transform is developed. Through use of this method, displacement, strain, velocity and strain rate distributions in a rubber tube in which an unloading stress wave is propagated are analyzed.

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