Tippur H V, Chiang F P
Appl Opt. 1991 Jul 1;30(19):2748-56. doi: 10.1364/AO.30.002748.
The paper provides analyses for two optical schemes developed for mapping 3-D crack tip fields in ductile materials. The first scheme combines the in-plane moire method with the projection moire method to determine all three displacement components simultaneously. In the second method, we combined onebeam laser speckle photography with the projection moire method to measure 3-D deformation fields. The experimental results obtained using these methods are presented.
本文对为绘制韧性材料中的三维裂纹尖端场而开发的两种光学方案进行了分析。第一种方案将平面内云纹法与投影云纹法相结合，以同时确定所有三个位移分量。在第二种方法中，我们将单光束激光散斑摄影与投影云纹法相结合，以测量三维变形场。文中给出了使用这些方法获得的实验结果。
