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fang huan kong jing san jiao san ban fa ce liang li mian wei yi ti du chang
Author(s): 
Pages: 65-73
Year: Issue:  2
Journal: Journal of Suzhou University Natural Science

Keyword:  离面位移多孔径衍射晕梯度场散斑照相法散斑法实验应力分析十字缝散斑图测量灵敏度;
Abstract: <正> 一、引言散斑照相法已广泛地应用于实验应力分析,尤其是多孔径法[1~4]、园环孔径[5]和十字缝孔径[6]、[7]的应用,使干涉条纹的质量和对比度都有所改善。本文提出的方环孔径法是紧靠照相机物镜前放如图一所示的方环进行散焦散斑照相。对方环孔径的衍射晕和散斑颗粒大小的实验和理论研究,表明该方法具有如下优点:1、衍射晕
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