Large deformation measurement scheme for 3D digital image correlation method

2012 ◽  
Vol 50 (2) ◽  
pp. 122-130 ◽  
Author(s):  
Zhengzong Tang ◽  
Jin Liang ◽  
Zhenzhong Xiao ◽  
Cheng Guo
Keyword(s):  
Digital Image Correlation ◽  
Large Deformation ◽  
Digital Image ◽  
Correlation Method ◽  
Deformation Measurement ◽  
Image Correlation ◽  
Digital Image Correlation Method ◽  
Measurement Scheme ◽  
3D Digital Image Correlation

Initial Value Estimation of Digital Image Correlation Method in Deformation Measurement Based on Feature Matching

2020 ◽  
Vol 57 (18) ◽  
pp. 181012
Author(s):  
朱天天 Zhu Tiantian ◽  
付中男 Fu Zhongnan ◽  
张梅 Zhang Mei ◽  
叶沛 Ye Pei ◽  
李桂华 Li Guihua
Keyword(s):  
Digital Image Correlation ◽  
Digital Image ◽  
Feature Matching ◽  
Correlation Method ◽  
Deformation Measurement ◽  
Image Correlation ◽  
Initial Value ◽  
Digital Image Correlation Method ◽  
Value Estimation

Unable to Detect Burial Defective Rubber Sheet in Digital Image Correlation Method

2015 ◽  
Vol 665 ◽  
pp. 209-212
Author(s):  
Dong Chang Li ◽  
Huang Chao ◽  
Qu Jia
Keyword(s):  
Mechanical Properties ◽  
Digital Image Correlation ◽  
Large Deformation ◽  
Digital Image ◽  
Optical Sensors ◽  
Correlation Method ◽  
Image Correlation ◽  
Rubber Material ◽  
Rubber Sheet ◽  
Digital Image Correlation Method

Rubber material is non-linear, hyper-elastic and incompressible. Its complex mechanical properties increase the difficulties of the theoretical calculation in large deformation. As the development of computing capacity and optical sensors, DIC (Digital Image Correlation) method has become an important method in measuring large deformation of rubber material. In this paper, DIC method was used to measure different depth of burial defective rubber in tensile test, the result, however, failed to test the burial defects of rubber sheet. In order to explore the failure mechanism, the finite element simulation test is completed using Mooney-Rivlin material model of two parameters. The undetected phenomenon is caused by rubber’s hyper elasticity and low-rigidity. The results show that DIC method can be effectively applied to the measurement and evaluation of mechanical properties of rubber-like material’s surface defects, but not its burial defects. The fact that DIC method is unable to detect the burial defects of rubber sheet should be paid more attention.

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