Journal ArticleDOI
High strain gradient measurements by using digital image correlation technique
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TLDR
In this article, the efficiency of the digital image correlation method for measuring in-plane displacements in the presence of high strain gradient is discussed, and three types of strain gradient have been studied: strain localization around a hole in a composite laminate, strain concentration at a crack tip in a TiAl alloy, and strain gradient on a polymer neck front.About:
This article is published in Materials Characterization.The article was published on 2004-09-01. It has received 97 citations till now. The article focuses on the topics: Digital image correlation.read more
Citations
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High-resolution elastic strain measurement from electron backscatter diffraction patterns: New levels of sensitivity
TL;DR: It is demonstrated that the shift between similar features in two electron backscatter diffraction patterns can be measured using cross-correlation based methods to +/- 0.05 pixels, which is an impressive and unique combination of high strain sensitivity, high spatial resolution and ease of use.
Journal ArticleDOI
The effect of out-of-plane motion on 2D and 3D digital image correlation measurements
TL;DR: In this article, the effect of out-of-plane motion on 2D and 3D digital image correlation measurements is demonstrated using basic theoretical pinhole image equations and experimentally through synchronized, multi-system measurements.
Journal ArticleDOI
Quality assessment of speckle patterns for digital image correlation
David Lecompte,Arwen Smits,Sven Bossuyt,Hugo Sol,Johnny Vantomme,D. Van Hemelrijck,Anne Habraken +6 more
TL;DR: A comparison is made between three different speckle patterns originated by the same referenceSpeckle pattern, and it is shown that the size of the speckles combined with thesize of the used pixel subset clearly influences the accuracy of the measured displacements.
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In-plane strain measurements on a microscopic scale by coupling digital image correlation and an in situ SEM technique
TL;DR: In this article, a method based on the correlation of digital images obtained on a microscopic scale is presented to obtain in-plane displacement values on the object surface with efficient spatial resolution and accuracy.
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A Self Adaptive Global Digital Image Correlation Algorithm
TL;DR: A novel Digital Image Correlation algorithm is presented, focussing on accurately determining small strains with high strain gradients, and results indicate that the introduced method is appropriate for accurately measuring high heterogeneous deformations and that the obtained data is to a large extent user independent.
References
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Journal ArticleDOI
Speckle Displacement and Decorrelation in the Diffraction and Image Fields for Small Object Deformation
TL;DR: In this paper, the cross-correlation functions of speckle intensities before and after deformation were investigated by calculating the crosscorrelation function of the intensity distribution of laser-speckles.
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High-temperature deformation measurements using digital-image correlation
TL;DR: In this article, the ability of the computer-vision technique of digital-image correlation to measure full-field in-plane surface deformations at elevated temperatures was evaluated by a series of experiments.
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Analysis of strain localization during tensile tests by digital image correlation
TL;DR: In this article, an imaging technique developed to study the strain localization phenomena that occur during the tension of thin, flat steel samples is presented, where the data are processed using digital speckle image correlation to derive the two in-plane components of the displacement vectors.
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Investigation of crack growth in functionally graded materials using digital image correlation
Jorge Abanto-Bueno,John Lambros +1 more
TL;DR: In this paper, the authors investigated the crack growth resistance behavior of functionally graded materials (FGMs) using the full-field measurement technique of digital image correlation (DIC) and obtained the in-plane displacement field surrounding the propagating crack.
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Production of Multiple Beam Fringes from Photographic Scatterers
J.M. Burch,J.M.J. Tokarski +1 more
TL;DR: In this article, a method for the production of interference fringes equivalent to those produced by a series of linearly arranged pinholes without actually constructing such pinholes is described, which is similar to those occurring in multiple beam hologram interferometry and to the lobes produced by one dimensional antenna arrays.