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介绍了一种新的实验力学方法——反射式高灵敏度云纹干涉法。本文首次采用高密度（６００线／毫米）位相型闪耀光栅的试件栅；在两相干准直光束对称地照射下，利用一次曝光的实时法和预加载波图样（１０—２０线／毫米）的两次曝光法，并用空间滤波手段分别获得了倍增系数为２的由载荷（或载荷差）所引起的构件表面Ｕ和Ｖ位移场云纹干涉条纹图样。提出了本实验的光路系统和实验装置，进行了典型性定量实验，给出了应用实例。
A new method of experimental mechanics, reflective high-sensitivity moire interferometry, is introduced. In this paper, the first high-density (600 lines / mm) phase grating blazed gratings were used. In the symmetrical illumination of two coherent collimated beams, real-time one-shot exposure and pre-loaded carrier pattern And the spatial filtering method was used to obtain the moiré fringe fringe pattern of the U and V displacement fields caused by the load (or load difference) with a multiplication factor of 2, respectively. The optical system and experimental equipment of this experiment are put forward. The typical quantitative experiment is given and the application examples are given.