摘要
本文提出了一种基于图像相关的双图像法测量弹性模量的方法 ,测试精确度比单图像方法的精确度提高了一个量级 ,通过实验验证了方法的可靠性 .利用双图像法对细观尺度不锈钢薄带和牛骨试件的拉伸弹性模量进行了测量 。
A method is developed for measuring Young′s modulus of thin films or small specimens, based on digital image correlation. Its sensitivity is higher than the sensitivity obtained by classical digital image correlation method. As an experiment, tensile modulus of bone specimens from bovine tibias is measured. The results show that the modulus value of the specimens in micro level is size-dependent, the value decreases with the increasing in thickness of the specimen.
出处
《实验力学》
CSCD
北大核心
2001年第4期422-426,共5页
Journal of Experimental Mechanics
关键词
图像相关法
弹性模量
细观
牛骨
双图像
试件
digital image correlation
Young′s modulus
micro level
bone
bi-image
