NDLI: Comparison of Subset-Based Local and Finite Element-Based Global Digital Image Correlation

Content Provider	Springer Nature Link
Author	Pan, B. Wang, B. Lubineau, G. Moussawi, A.
Copyright Year	2015
Abstract	Digital image correlation (DIC) techniques require an image matching algorithm to register the same physical points represented in different images. Subset-based local DIC and finite element-based (FE-based) global DIC are the two primary image matching methods that have been extensively investigated and regularly used in the field of experimental mechanics. Due to its straightforward implementation and high efficiency, subset-based local DIC has been used in almost all commercial DIC packages. However, it is argued by some researchers that FE-based global DIC offers better accuracy because of the enforced continuity between element nodes. We propose a detailed performance comparison between these different DIC algorithms both in terms of measurement accuracy and computational efficiency. Then, by measuring displacements of the same calculation points using the same calculation algorithms (e.g., correlation criterion, initial guess estimation, subpixel interpolation, optimization algorithm and convergence conditions) and identical calculation parameters (e.g., subset or element size), the performances of subset-based local DIC and two FE-based global DIC approaches are carefully compared in terms of measurement error and computational efficiency using both numerical tests and real experiments. A detailed examination of the experimental results reveals that, when subset (element) size is not very small and the local deformation within a subset (element) can be well approximated by the shape function used, standard subset-based local DIC approach not only provides better results in measured displacements, but also demonstrates much higher computation efficiency. However, several special merits of FE-based global DIC approaches are indicated.
Starting Page	887
Ending Page	901
Page Count	15
File Format	PDF
ISSN	00144851
Journal	Experimental Mechanics
Volume Number	55
Issue Number	5
e-ISSN	17412765
Language	English
Publisher	Springer US
Publisher Date	2015-02-12
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Digital image correlation Finite element Displacement measurement Continuum Mechanics and Mechanics of Materials Characterization and Evaluation of Materials Optics, Optoelectronics, Plasmonics and Optical Devices Structural Mechanics Vibration, Dynamical Systems, Control Mechanics
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering Aerospace Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

A Novel “Subset Splitting” Procedure for Digital Image Correlation on Discontinuous Displacement Fields

Multiscale Displacement Field Measurement Using Digital Image Correlation: Application to the Identification of Elastic Properties

On the Use of NURBS Functions for Displacement Derivatives Measurement by Digital Image Correlation

Absolute Nodal Coordinates in Digital Image Correlation

Comparison of Local and Global Approaches to Digital Image Correlation

Finite Strain Kinematics of Multi-scale Material by Digital Image Correlation

Mesh-Based Digital Image Correlation Method Using Non-Uniform Elements for Measuring Displacement Fields with High Gradient

Random Errors in Digital Image Correlation Due to Matched or Overmatched Shape Functions

Digital Image Correlation with Self-Adaptive Gaussian Windows

Comparison of Subset-Based Local and Finite Element-Based Global Digital Image Correlation

Similar Documents

A Novel “Subset Splitting” Procedure for Digital Image Correlation on Discontinuous Displacement Fields

Multiscale Displacement Field Measurement Using Digital Image Correlation: Application to the Identification of Elastic Properties

On the Use of NURBS Functions for Displacement Derivatives Measurement by Digital Image Correlation

Absolute Nodal Coordinates in Digital Image Correlation

Comparison of Local and Global Approaches to Digital Image Correlation

Finite Strain Kinematics of Multi-scale Material by Digital Image Correlation

Mesh-Based Digital Image Correlation Method Using Non-Uniform Elements for Measuring Displacement Fields with High Gradient

Random Errors in Digital Image Correlation Due to Matched or Overmatched Shape Functions

Digital Image Correlation with Self-Adaptive Gaussian Windows

Comparison of Subset-Based Local and Finite Element-Based Global Digital Image Correlation