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:
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
Advances in Computer Vision-Based Civil Infrastructure Inspection and Monitoring
TL;DR: An overview of recent advances in computer vision techniques as they apply to the problem of civil infrastructure condition assessment and some of the key challenges that persist toward the goal of automated vision-based civil infrastructure and monitoring are presented.
Journal ArticleDOI
Digital image correlation for surface deformation measurement: historical developments, recent advances and future goals
Journal ArticleDOI
Mean intensity gradient: An effective global parameter for quality assessment of the speckle patterns used in digital image correlation
Bing Pan,Zixing Lu,Huimin Xie +2 more
TL;DR: In this article, a simple and easy-to-calculate yet effective global parameter, called mean intensity gradient, is proposed for quality assessment of the speckle patterns used in DIC.
Journal ArticleDOI
Fast, Robust and Accurate Digital Image Correlation Calculation Without Redundant Computations
TL;DR: In this article, a Gauss-Newton-based digital image correlation (DIC) method was proposed to eliminate the redundant computations involved in conventional DIC method using forward additive matching strategy and classic Newton-Raphson (FA-NR) algorithm without sacrificing its sub-pixel registration accuracy.
Journal ArticleDOI
Computer vision for SHM of civil infrastructure: From dynamic response measurement to damage detection – A review
Dongming Feng,Maria Q. Feng +1 more
TL;DR: This review paper is intended to summarize the collective experience that the research community has gained from the recent development and validation of the vision-based sensors for structural dynamic response measurement and SHM.
References
More filters
Journal ArticleDOI
A new method for characterizing nonlinearity in scanning probe microscopes using digital image correlation
Helena Jin,Hugh A. Bruck +1 more
TL;DR: In this article, a new characterization method is presented that combines a high-resolution image processing technique used by the experimental mechanics community known as Digital Image Correlation (DIC) with digital images from a standard type of SPM known as an atomic force microscope (AFM).
Journal ArticleDOI
Study of the deformation characteristics of window security film by digital image correlation techniques
TL;DR: A speckle-displacement measurement technique based on the digital image correlation to study the notch sensitivity and crack bridging of window security film, used to protect existing glazing against hurricanes, blast and terrorist explosions is presented.
Journal ArticleDOI
Nanoscale Deformation and Cracking Studies of Advanced Metal Evaporated Magnetic Tapes using Atomic Force Microscopy and Digital Image Correlation Techniques
TL;DR: In this paper, a custom designed microtensile tester was integrated with an atomic force microscopy (AFM) to perform in situ tensile tests on two advanced metal evaporated (ME) magnetic tapes, where the tape surfaces were imaged simultaneously by AFM during tensile loading.
Journal ArticleDOI
A new micro-tensile system for measuring the mechanical properties of low-dimensional materials : Fibers and films
TL;DR: In this paper, a micro-tensile system was developed to evaluate the mechanical properties of low-dimensional materials, such as fibers and films, using a magnet-coil force actuator to apply a tensile load on the material and a digital image correlation (DIC) method to measure the corresponding displacement and strain of the material.
Journal ArticleDOI
Strain measurement of SU-8 photoresist by a digital image correlation method with a hybrid genetic algorithm
TL;DR: In this paper, a hybrid genetic algorithm, in which a simulated annealing mutation process and adaptive mechanisms are added to the real-parameter GA algorithm, is proposed to search the deformed images.