模型位移场的散斑互相关法测量技术研究及应用  

Study and application of speckle correlation measurement method for displacement fields of model

作　　者：白义如[1] 白世伟[2] 冯传玉[3] 

机构地区：[1]湛江海洋大学工程学院,广东湛江524088 [2]中国科学院武汉岩土力学研究所,湖北武汉430071 [3]中国科学技术大学力学与机械工程系,安徽合肥230027

出　　处：《岩土力学》2004年第6期995-998,共4页Rock and Soil Mechanics

摘　　要：白光散斑可以测量大物体大变形,而相关技术要求的散斑场是广义散斑场;所以笔者采用的散斑为白光散斑,位移信息的提取采用相关技术。首先,在模型表面人为地制作白光散斑场,提出了一种在模型试验表面制斑的方法。又改进了散斑相关程序。最后,用白光散斑进行模型试验,表明这种测试技术在节理不发育的条件下是可行的。Large displacements of a big object can be measured with white speckles; but the correlation technique needs a generalized speckle field. So we use white speckle field and use the correlation method to pick up displacement informations. Firstly, white speckle field is made on the model, so a new method of making speckle on model is advanced in the article. Secondly, program of speckle correlation method is improved. Finally, the model test is carried out with white speckle; and it is proved that the measurement method is feasible in the condition of no joint development.

关 键 词：散斑 互相法 模型试验 程序 

分 类 号：TB96[机械工程—光学工程]