Elastic constants and their measurement
Elastic constants and their measurement
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DOI：
10.1115/1.3423687
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发表时间：
1974
期刊：
影响因子：
--
通讯作者：
E. Schreiber;O. Anderson;N. Soga;J. Bell
中科院分区：
文献类型：
--
作者：
E. Schreiber;O. Anderson;N. Soga;J. Bell
形成的光栅。在最后一种情况下，灵敏度受到拍摄变形光栅线的要求的限制。光栅密度大于40 lpmm的图像很难用当前的光学系统分辨。对于Ii mm的典型偏移，假设精度达到条纹的lfLoth，则可以实现Ii X 10-4。还可以采用各种光学处理方法，例如交叉叠加光栅的空间滤波，以完全确定如图1所示的面内应变张量的所有分量。讨论者不清楚类似的光学处理方法是否可以应用于全息方法。
formed gratings. In the last case sensitivity is limited hy the requirement for photographing the deformed grating lines. Images of gratings denser than about 40 lpmm are difficult to resolve with current optical systems. For a typical shift of Ii mm, assuming precision to lfLoth of a fringe, Ii X 10-4 can therefore he achieved. A variety of optical processing methods can also be employed such as the spatial filtering of crossed, superposed gratings to completely determine all components of the in-plane strain tensor as illustrated in Fig. 1. It is not clear to the discussors whether similar optical processing methods can be applied to the holographic methods.