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Showing 1 to 20 of 234 for “"image correlation"”.
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Deformation mapping of fibronectin fibrils using digital image correlation
… This study has developed an automated Digital Image Correlation based technique for determining the displacements and strains experienced by the fibrils during the assembly process. Fibril motion is tracked using a time lapse sequence of images and the motion kinematics are determined using an …
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Monocular Vision and Image Correlation to Accomplish Autonomous Localization
… which consists of a set of geo-referenced video images. This map is generated offline before autonomous navigation is required. When an autonomous vehicle is later deployed, it will be equipped with an on-board camera. As the vehicle moves and obtains images, it will be able to compare its …
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In-Situ Monitoring of Additive Manufacturing Using Digital Image Correlation
… this research, an in-situ approach using Digital Image Correlation (DIC) is developed to monitor the deformation during the processing, and thereby analyze the formation of defects and residual stresses. DIC is a visual technique that compares the changes in speckle pattern in consecutive images …
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Quantifying Renal Swelling during Machine Perfusion using Digital Image Correlation
… An experimental methodology was developed to image porcine kidneys undergoing hypothermic machine perfusion (5 deg C) for 15 minutes followed by 120 minutes without perfusion to quantify surface displacement (renal swelling) with digital image correlation (DIC). Surface displacement and size …
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Strain Estimation of Fibronectin Fibrils Using Two Dimensional Digital Image Correlation
… highly dynamic process. Fibronectin assembly was imaged in 2T3 osteoblasts using time lapse imaging over a 48 hour period. This was divided into four equal 12 hour stages, in which we could observe the assembly process from no fibrils to formation of a mature fibril network. Two Dimensional …
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Advancing Digital Image Correlation with Low-Speed Cameras for Structural Dynamics
L'abstract è presente nell'allegato / the abstract is in the attachment
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Improvements in digital image correlation and application in material mechanical test
<p>"Digital image correlation (DIC) is a non-contact full-field optical measurement method. With the advantages of high accuracy, low cost, and simple implementation, it has been widely applied in the area of experimental mechanics. In this study, DIC algorithm has been improved in the aspects of …
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Relating fatigue crack growth to microstructure via multiscale digital image correlation
… properties. The optical technique of digital image correlation (DIC) is well suited for this task since it provides quantitative full-field deformation measurements at multiple length scales. The first part of this work introduces two DIC-based techniques for measuring fatigue crack closure …
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Real-time measurement of biaxial tensions using digital image correlation methods
… to obtain reliable deformation data. Digital Image Correlation (DIC) is one such method. Pioneered in the 1980s the field has developed from basic 2D displacement measurements to very sophisticated full field 3D displacement measurement systems. The question becomes can the current state of …
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Implementation of an Open-Source Digital Image Correlation Software for Structural Testing
… of a simplified, open-source digital image correlation (DIC) software for use in quasi-static, structural testing utilizing two-dimensional (2D) DIC measurements. DIC is a non-contact optical measurement technique that uses computer vision to track unique attributes on the surface of …
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Evaluating digital image correlation speckle pattern quality using finite element‑based displacement fields
Digital Image Correlation (DIC) is a non‑contact optical technique that relies on high‑contrast, stochastic speckle patterns to measure surface deformations. Recent research has focused on quantifying speckle pattern quality to improve measurement accuracy, leading to the development of several …
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Experimental determination of the yield locus of anisotropic metal sheets using digital image correlation
… the rolling and transverse directions. Digital image correlation was used to determine the strain distribution throughout the gauge region. The stress-strain response of the plane-strain tension specimen was estimated through a comparison of the experimental and numerically predicted load-strain …
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Asphalt mixture evaluation using performance space diagrams, digital image correlation, and discrete element modeling
… with the use of high speed cameras for digital image correlation (DIC) measurements, and has been complemented with heterogeneous numerical simulations via modeling tools such as the discrete element method (DEM). However, there has not been an analysis method developed using traditional high …
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Digital image correlation analysis of alkali silica reaction in concrete with recycled glass aggregate
Digital image correlation (DIC) is an effective tool for measuring the in-plane displacement and full-field strain of the surface of an object. DIC can be implemented as a low-cost non-destructive technique using a time series of images of the object of interest. The advantages of DIC inspires the …
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Investigation of thermal effects on fatigue crack closure using multiscale digital image correlation experiments
… superalloy. Using multiscale, digital image correlation (DIC), macroscale experiments were performed at 2x magnification (2 µm/pix), providing full-field crack closure measurements. Microscale experiments performed at 10x magnification (0.4 µm/pix), provided local crack closure …
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Decoding of Facial Strains via Conformable Piezoelectric Interfaces and Three-Dimensional Digital Image Correlation
… and the epidermis; and three-dimensional digital image correlation (3D-DIC) for reconstructing softtissue surfaces under dynamic deformations as well as for informing device design and placement. Most biomedical sensor designs lack an in-depth study of the target soft tissue before the design and …
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Characterizing the tensile behavior of additively manufactured metals at high temperatures using digital image correlation
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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Characterizing the tensile behavior of additively manufactured Ti-6Al-4V using multiscale digital image correlation
… scales using two-dimensional (2-D) digital image correlation (DIC) techniques. Ti-6Al-4V is one of the AM metals that is currently commercially available for use in a variety of engineering applications. This work focuses on characterizing the relationship between the microstructure and bulk …
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Fresh Mix Properties and Flexural Analysis with Digital Image Correlation of Additively Manufactured Cementitious Materials
… behavior was corroborated with stereo-digital image correlation data showing the stress-strain and load-deflection relationships. Two orientations (A and B) demonstrated brittle behavior while the other two orientations (C and D) experienced quasi-brittle behavior. In addition, setting a …
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Tensile Properties of Loblolly Pine Strands Using Digital Image Correlation and Stochastic Finite Element Method
… variables. Tension testing incorporating digital image correlation (DIC) was employed to measure the MOE and UTS of earlywood and latewood bands sampled from growth ring numbers 1-10 and growth ring numbers 11-20. A similar technique adjusted for strand size testing was also applied to measure the …
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