Abstract
In order to confirm the theoretical results of the diffraction of linear plane wave concerning with the cylinders, the experiments of visualization are studied by using ultrasonic wave. In the experiments of visualization, Schliren Method is improved by using stroboscopic light source. As the experimental results, the images of phase and diffraction of sonic wave can be obtained at the same time. The theoretical results of the diffraction are verified to be reliable in comparison with the experimental results.
