Published in

Elsevier, Optics and Lasers in Engineering, (81), p. 103-112

DOI: 10.1016/j.optlaseng.2016.01.012

Links

Tools

Export citation

Search in Google Scholar

Accurate kinematic measurement at interfaces between dissimilar materials using conforming finite-element-based digital image correlation

Journal article published in 2016 by Ran Tao ORCID, Ali Moussawi, Gilles Lubineau ORCID, Bing Pan
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

Full text: Unavailable

Green circle
Preprint: archiving allowed
Red circle
Postprint: archiving forbidden
Red circle
Published version: archiving forbidden
Data provided by SHERPA/RoMEO

Abstract

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.