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在实验应力分析中,许多光测方法,例如激光全息法,激光散斑法和莫尔法等,得到的是代表物体表面位移信息的干涉条纹图.在分析中需要对位移微分才能得到应变.在位移微分的工作中,近几年来,一些学者做了不少工作,力求减少误差,期望得到满意的结果.但避免不了地要产生误差,影响分析的精度.因此由实验直接得到全场应变分布是人们关心的课
In the experimental stress analysis, many photogrammetric methods, such as laser holography, laser speckle method and Moire method, get the fringe pattern representing the displacement information of the surface of the object, and the displacement differential needs to be obtained in the analysis to get the strain. In the work of differential displacement, in recent years, some scholars have done a lot of work, and strive to reduce the error, expect to get satisfactory results, but can not avoid to produce errors, affect the accuracy of analysis.Therefore, Distribution is a lesson people care about