测试技术学报2012，Vol.26Issue(2)：105-108,4.DOI:10.3969/j.issn.1671-7449.2012.02.003
非接触数字图像相关应变测量的仿真与实验研究
Simulation and Experimental Study of Non-contact Strain Measurement Using Digital Image Correlation
摘要
Abstract
Digital image correlation is a new experimental method for measuring full - field displacement and strain. In this method, the correlation function and the size of the subset are the key factors for calculating accuracy. In this paper, the influence of two factors on the accuracy of strain measurement under normal light and the Gaussian uneven lighting conditions respectively is studied by using speckle images of the known strain deformation. The optimal correlation function and subset size are obtained for various measurement requirements. Finally, the measuring accuracy of this method is verified and analyzed with the tensile experiments.关键词
数字图像相关/应变测量/光学测量/亚像素/非接触测量Key words
digital image correlation/ strain measurement/ optical measurement/ sub-pixel/ non-contact measurement分类
数理科学引用本文复制引用
陈忠,周晓峰..非接触数字图像相关应变测量的仿真与实验研究[J].测试技术学报,2012,26(2):105-108,4.基金项目
国家自然科学基金资助项目(50822504) （50822504）
