Journal ArticleDOI
Two-dimensional digital image correlation for in-plane displacement and strain measurement: a review
TLDR
In this article, a review of the 2D digital image correlation (2D DIC) technique for displacement field measurement and strain field estimation is presented, and detailed analyses of the measurement accuracy considering the influences of both experimental conditions and algorithm details are provided.Abstract:Â
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.read more
Citations
More filters
Journal ArticleDOI
Numerical model for investigation of the strain distribution in thick composite plates subjected to bolt loads
TL;DR: In this paper, a three dimensional finite element model of a thick composite plate subjected to bolt loads is created using ANSYS 14.5 and the model is used to investigate the effect of thickness on distributions of interlaminar stresses.
Journal ArticleDOI
Mesoscale design of heterogeneous material systems in multi-material additive manufacturing
TL;DR: In this article, the authors propose and demonstrate a design framework by incorporating digital image correlation-based deformation mapping with 3D finite element modeling-based computational optimization to optimize the mesoscale material distribution in multi-material additive manufacturing.
Journal ArticleDOI
Automated monitoring of the crack propagation in mode I testing of thermoplastic composites by means of digital image correlation
TL;DR: In this article, two different reduction methods were developed to determine the crack length from the digital image correlation (DIC) data and showed a good correlation with both the standardised procedure and TSA.
Journal ArticleDOI
Full-Field Measurement of Residual Stresses in Composite Materials Using the Incremental Slitting and Digital Image Correlation Techniques
TL;DR: In this paper, an approach based on the eigenstrain concept was exploited to ascertain the optimum region of interest (ROI) for the analysis of a symmetric cross-ply composite specimen.
Proceedings ArticleDOI
Comparative Analysis of Package Warpage Using Confocal Method and Digital Image Correlation
TL;DR: In this paper, a new confocal imaging system is introduced and compared with DIC method in different aspects and the objection of the comparison is not to decide which tool is better yet to provide a general guide for both advantages and disadvantages of two kinds of methods under different situations of applications.
References
More filters
Journal ArticleDOI
Surfaces generated by moving least squares methods
Peter Lancaster,K. Salkauskas +1 more
TL;DR: In this article, an analysis of moving least squares (m.l.s.) methods for smoothing and interpolating scattered data is presented, in particular theorems concerning the smoothness of interpolants and the description of m. l.s. processes as projection methods.
Journal ArticleDOI
Applications of digital-image-correlation techniques to experimental mechanics
Journal ArticleDOI
Digital Particle Image Velocimetry
Christian Willert,Morteza Gharib +1 more
TL;DR: In this article, the directional ambiguity associated with PIV and LSV is resolved by implementing local spatial cross-correlations between two sequential single-exposed particle images, and the recovered velocity data are used to compute the spatial and temporal vorticity distribution and the circulation of the vortex ring.
Journal ArticleDOI
Digital Imaging Techniques In Experimental Stress Analysis
W. H. Peters,W. F. Ranson +1 more
TL;DR: In this paper, the surface displacement components in laser speckle metrology were measured using a digital image scanner interfaced to a computer. Butt et al. used a boundary integral equation method to calculate surface traction in the contour.
Journal ArticleDOI
Digital image correlation using Newton-Raphson method of partial differential correction
TL;DR: In this paper, the authors developed and limited experimental verification of a method which can determine displacements and gradients using the Newton-Raphson method of partial corrections, which was shown to be accurate in determining displacement and certain gradients, while using significantly less CPU time than the current coarse-fine search method.