抄録
The technique which can visualize distortion or the oscillating mode quickly and easily has been developed using the technique for making hologram easily and automatically with photo-conductor plastic processed by solvent vapour. A hologram can be made in several minutes by the compact optical system constructed on an optical rail base which prevents vibration, in the twilight room. Distortion or the oscillating mode are easily observed on real time by the technique of visualization using this method. Moreover, using this technique, we can visualize the vibration, distortion by heat or defects, such as a structure defect or a crack of the plat which is not visible without touching.
