光弹性等倾线获取的图像处理技术  

Digital Image Processing Method of Extracting Isoclinics

作　　者：张东升[1] 

机构地区：[1]天津大学,天津300072

出　　处：《实验力学》1993年第2期132-136,150,共6页Journal of Experimental Mechanics

摘　　要：提出一种对数微分法,有效地解决了光弹性实验中等倾线的提取问题,不仅可消除平面偏振光场中等差线对等倾线的影响,而且能高精度地提取任意复杂受力模型等倾线.最后给出了等倾线提取及精度分析的两个实例,实验证明;本方法具有广阔的应用前景.A new method which is called logarithm difference method,is proposed to extract iso clinice effectively from photoelastic experiments.It can remove the effect of isochromatics,and pro- vide a way to obtain isoclinic fringe patterns in complex photoelastio model automatically and accurate- ly.Two experiments were given to show the steps for extracting isoclinics and its accuracy was ara- lyzed.

关 键 词：等倾线 对数微分法 光弹性 

分 类 号：O348.1[理学—固体力学]