Measurement of dynamic large-strain deformation maps using an automated fine grid technique

摘要: Automatic analysis of the dynamic deformation a fine grid ruled onto specimen's surface has allowed whole-field measurement both in-plane displacement components. A high-speed camera was used to capture images impacts at velocities over 500 m/s. The Fourier transform method and phase unwrapping were calculate planes coordinates which deform with specimen. An iterative search algorithm yields displacements directly by searching for shifted location each set in image deformed This paper describes application previously proven technique deformation. Simple sample preparation experimental operation make this ideal regime.