雷振坤

同专业博导

同专业硕导

个人学术主页

论文成果
A novel 2nd-order shape function based digital image correlation method for large deformation measurements

点击次数:

论文类型:期刊论文

发表时间:2017-03-01

发表刊物:OPTICS AND LASERS IN ENGINEERING

收录刊物:SCIE、EI

文献类型:J

卷号:90

页面范围:48-58

ISSN号:0143-8166

关键字:Digital image correlation; Inverse compositional matching algorithm; Invertible second-order shape operator; Large deformation measurement

摘要:Compared with the traditional forward compositional matching strategy, the inverse compositional matching strategy has almost the same accuracy, but has an obviously higher efficiency than the former in digital image correlation (DIC) algorithms. Based on the inverse compositional matching strategy and the auxiliary displacement functions, a more accurate inverse compositional Gauss-Newton (IC-GN2) algorithm with a new second-order shape operator is proposed for nonuniform and large deformation measurements. A theoretical deduction showed that the new proposed second-order shape operator is invertible and can steadily attain second-order precision. The result of the numerical simulation showed that the matching accuracy of the new IC-GN2 algorithm is the same as that of the forward compositional Gauss-Newton (FC-GN2) algorithm and is relatively better than in IC-GN2 algorithm. Finally, a rubber tension experiment with a large deformation of 27% was performed to validate the feasibility of the proposed algorithm.

上一条: Optical Image Encryption Based on Mixed Chaotic Maps and Single-Shot Digital Holography

下一条: 火箭贮箱结构健康监测传感器系统设计

辽ICP备05001357号 地址:中国·辽宁省大连市甘井子区凌工路2号 邮编:116024
版权所有:大连理工大学

访问量:

开通时间:..

最后更新时间:..