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Two-dimensional digital image correlation for in-plane displacement and strain measurement: a review

Two-dimensional digital image correlation for in-plane displacement and strain measurement: a review As a practical and effective tool for quantitative in-plane deformation measurement of a planar object surface, two-dimensional digital image correlation (2D DIC) is now widely accepted and commonly used in the field of experimental mechanics. It directly provides full-field displacements to sub-pixel accuracy and full-field strains by comparing the digital images of a test object surface acquired before and after deformation. In this review, methodologies of the 2D DIC technique for displacement field measurement and strain field estimation are systematically reviewed and discussed. Detailed analyses of the measurement accuracy considering the influences of both experimental conditions and algorithm details are provided. Measures for achieving high accuracy deformation measurement using the 2D DIC technique are also recommended. Since microscale and nanoscale deformation measurement can easily be realized by combining the 2D DIC technique with high-spatial-resolution microscopes, the 2D DIC technique should find more applications in broad areas. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Measurement Science and Technology IOP Publishing

Two-dimensional digital image correlation for in-plane displacement and strain measurement: a review

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Copyright
Copyright 2009 IOP Publishing Ltd
ISSN
0957-0233
eISSN
1361-6501
DOI
10.1088/0957-0233/20/6/062001
Publisher site
See Article on Publisher Site

Abstract

As a practical and effective tool for quantitative in-plane deformation measurement of a planar object surface, two-dimensional digital image correlation (2D DIC) is now widely accepted and commonly used in the field of experimental mechanics. It directly provides full-field displacements to sub-pixel accuracy and full-field strains by comparing the digital images of a test object surface acquired before and after deformation. In this review, methodologies of the 2D DIC technique for displacement field measurement and strain field estimation are systematically reviewed and discussed. Detailed analyses of the measurement accuracy considering the influences of both experimental conditions and algorithm details are provided. Measures for achieving high accuracy deformation measurement using the 2D DIC technique are also recommended. Since microscale and nanoscale deformation measurement can easily be realized by combining the 2D DIC technique with high-spatial-resolution microscopes, the 2D DIC technique should find more applications in broad areas.

Journal

Measurement Science and TechnologyIOP Publishing

Published: Jun 1, 2009

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