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Image Correlation for Shape, Motion and Deformation Measurements: Basic Concepts,Theory and Applications
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In this paper, a comprehensive overview of image correlation for shape, motion and deformation measurements is provided. But, the authors do not discuss the effect of out-of-plane motion on 2D measurements.Abstract:
Image Correlation for Shape, Motion and Deformation Measurements provides a comprehensive overview of data extraction through image analysis. Readers will find and in-depth look into various single- and multi-camera models (2D-DIC and 3D-DIC), two- and three-dimensional computer vision, and volumetric digital image correlation (VDIC). Fundamentals of accurate image matching are described, along with presentations of both new methods for quantitative error estimates in correlation-based motion measurements, and the effect of out-of-plane motion on 2D measurements. Thorough appendices offer descriptions of continuum mechanics formulations, methods for local surface strain estimation and non-linear optimization, as well as terminology in statistics and probability. With equal treatment of computer vision fundamentals and techniques for practical applications, this volume is both a reference for academic and industry-based researchers and engineers, as well as a valuable companion text for appropriate vision-based educational offerings.read more
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Journal ArticleDOI
A Novel Image-based Ultrasonic Test to Map Material Mechanical Properties at High Strain-rates
Rian Seghir,Fabrice Pierron +1 more
TL;DR: In this paper, an innovative identification strategy based on high power ultrasonic loading together with both infrared thermography and ultra-high speed imaging is presented in order to characterize the visco-elastic behaviour of a polymer specimen (PMMA) from a single sample over a range of temperatures and strain-rates.
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Detection and Quantification of Slip Along Non-Uniform Frictional Discontinuities Using Digital Image Correlation
TL;DR: In this article, a deformation measurement system based on the principles of digital image correlation (DIC) has been developed to evaluate the process of slip along frictional discontinuities, where a biaxial compression apparatus is used to impose shear failure on perfectly mated gypsum specimens with nonhomogeneous contact surfaces.
Journal ArticleDOI
The Influence of Temperature and High-Speed Heating on Tensile Strength of Granite and the Application of Digital Image Correlation on Tensile Failure Processes
TL;DR: In this paper, the Digital Image Correlation (DIC) technique was used for analyzing the tensile behavior of Eibenstock granite at high-speed heating rate and different temperatures.
Journal ArticleDOI
Calibration of aero-structural reduced order models using full-field experimental measurements
TL;DR: In this article, the structural response of a rectangular panel to an external heating source (thermo-structural coupling) where the temperature effect on the structure is obtained from forward looking infrared (FLIR) measurements and the displacement via 3D-digital image correlation (DIC) was investigated.
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Learning to Predict Crystal Plasticity at the Nanoscale: Deep Residual Networks and Size Effects in Uniaxial Compression Discrete Dislocation Simulations
Zijiang Yang,Stefanos Papanikolaou,Andrew C. E. Reid,Wei-keng Liao,Alok Choudhary,Carelyn E. Campbell,Ankit Agrawal +6 more
TL;DR: This work demonstrates how a deep residual network can be used to deduce the dislocation characteristics of a sample of interest using only its surface strain profiles at small deformations, and then statistically predict the mechanical response of size-affected samples at larger deformations.