Accurate kinematic measurement at interfaces between dissimilar materials using conforming finite-element-based digital image correlation
Type
ArticleKAUST Department
Composite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS)Mechanical Engineering Program
Physical Science and Engineering (PSE) Division
Date
2016-02-11Online Publication Date
2016-02-11Print Publication Date
2016-06Permanent link to this record
http://hdl.handle.net/10754/621528
Metadata
Show full item recordAbstract
Digital image correlation (DIC) is now an extensively applied full-field measurement technique with subpixel accuracy. A systematic drawback of this technique, however, is the smoothening of the kinematic field (e.g., displacement and strains) across interfaces between dissimilar materials, where the deformation gradient is known to be large. This can become an issue when a high level of accuracy is needed, for example, in the interfacial region of composites or joints. In this work, we described the application of global conforming finite-element-based DIC technique to obtain precise kinematic fields at interfaces between dissimilar materials. Speckle images from both numerical and actual experiments processed by the described global DIC technique better captured sharp strain gradient at the interface than local subset-based DIC. © 2016 Elsevier Ltd. All rights reserved.Citation
Tao R, Moussawi A, Lubineau G, Pan B (2016) Accurate kinematic measurement at interfaces between dissimilar materials using conforming finite-element-based digital image correlation. Optics and Lasers in Engineering 81: 103–112. Available: http://dx.doi.org/10.1016/j.optlaseng.2016.01.012.Sponsors
The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).Publisher
Elsevier BVJournal
Optics and Lasers in Engineeringae974a485f413a2113503eed53cd6c53
10.1016/j.optlaseng.2016.01.012