An analysis of using the method of two-dimensional digital image correlation in glass column research

Abstract Among the full-field optical measurement methods, the Digital Image Correlation (DIC) is one of the techniques which has been given particular attention. Technically, the DIC technique refers to a non-contact strain measurement method that mathematically compares the grey intensity changes of the images captured at two different states: before and after deformation. The measurement can be performed by numerically calculating the displacement of speckles which are deposited on the top of object’s surface. In this paper, the Two-Dimensional Digital Image Correlation (2D-DIC) is presented and its fundamental concepts are discussed. Next, the development of the 2D-DIC algorithms in the past 33 years is reviewed systematically. The improvement of 2DDIC algorithms is presented with respect to two distinct aspects: their computation efficiency and measurement accuracy. Furthermore, analysis of the 2D-DIC accuracy is included, followed by a review of the DIC applications for two-dimensional measurements.

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A Novel Approach for the Determination of Surface Tilt Angles in Two-Dimensional Digital Image Correlation Experiments

Experimental Mechanics ◽

10.1007/s11340-019-00554-8 ◽

2019 ◽

Vol 60 (3) ◽

pp. 267-282 ◽

Cited By ~ 1

Author(s):

A. L. Hijazi

Keyword(s):

Digital Image Correlation ◽

Digital Image ◽

Image Correlation ◽

Two Dimensional ◽

Novel Approach

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Correction to: A Novel Approach for the Determination of Surface Tilt Angles in Two-Dimensional Digital Image Correlation Experiments

Experimental Mechanics ◽

10.1007/s11340-019-00568-2 ◽

2019 ◽

Vol 60 (3) ◽

pp. 425-425

Author(s):

A. L. Hijazi

Keyword(s):

Digital Image Correlation ◽

Digital Image ◽

Image Correlation ◽

Two Dimensional ◽

Novel Approach

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Self-correction method of out-of-plane motions in two-dimensional digital image correlation

Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture ◽

10.1177/0954405416673683 ◽

2016 ◽

Vol 232 (9) ◽

pp. 1672-1676 ◽

Cited By ~ 1

Author(s):

Wentao Yan ◽

Feng Lin

Keyword(s):

Digital Image Correlation ◽

Digital Image ◽

Correlation Method ◽

Correction Method ◽

Image Correlation ◽

Two Dimensional ◽

Monitoring Method ◽

Strain Monitoring ◽

Out Of Plane ◽

Relationship Of

Strain monitoring is very important in the manufacturing, assembling, installation and servicing processes in both mechanical and civil engineering fields. Two-dimensional digital image correlation is a simple, efficient strain monitoring method, but one major bottleneck is the unacceptable error due to the unavoidable out-of-plane motions of the object in practice. We propose a “self-correction” method: employing the originally extracted strain values in different directions to correct the errors due to out-of-plane motions. It is applicable to many engineering applications with known relationship of strains in different directions. A uniaxial tension test was conducted to demonstrate the effectiveness and practicality of this self-correction method. Compared with other correction methods, this method is not only simpler but also more efficient in correcting errors due to the lens distortion caused by self-heating. Both the experiment and theoretical analyses demonstrate that this self-correction method maintains the high accuracy of the digital image correlation method.

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