激光全息摄影术是一种比较新的科学技术。它不仅可以把物体发射的或反发射的光波的振幅记录下来,而且能把光波的相位记录下来,即能记录物体外表感受光的全部信息。因此观看全息照片与观看实物有同样的立体感和真实感。汽轮机叶片的断裂事故较多,严重威胁机组的安全运行。而这类事故的绝大部分是由于叶片本身陷入某种共振状态引起的。对于叶片的振动特性虽然经过详尽的理论计算和分析,以合理地调开共振状态。但由于一系列的假设和对边界条件的了解不够,因此 Laser holography is a relatively new science and technology. Not only can it record the amplitude of light waves emitted or emitted by an object, but also record the phase of the light waves, that is, it can record all the information of the external appearance of the object. So watching the holographic photos and viewing the same kind of three-dimensional sense of reality and reality. Turbine blade fracture more serious threat to the safe operation of the unit. The vast majority of such accidents are caused by the blade itself being trapped in a state of resonance. Although the vibration characteristics of the blade after a detailed theoretical calculation and analysis, in order to properly adjust the resonance state. However, due to a series of assumptions and insufficient knowledge of the boundary conditions,