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Stereo-DIC Challenge 1.0 – Rigid Body Motion of a Complex Shape

Journal Article · · Experimental Mechanics
 [1];  [2];  [1];  [3];  [3];  [4];  [5];  [6];  [7]
  1. Aalto Univ., Espoo (Finland)
  2. Lafayette College, Easton, PA (United States)
  3. Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
  4. Dantec Dynamics, Ulm (Germany)
  5. MatchID, Ghent (Belgium)
  6. LaVision, Gottingen (Germany)
  7. Correlated Solutions, Irmo, SC (United States)
Background Stereo-DIC is a widely used optical measurement technique that provides a dense full-field 3D measurement of the shape, displacement, and strain of a solid sample. When compared with 2D-DIC, Stereo-DIC provides greater flexibility and expands its use beyond flat, planar specimens. Furthermore, the widespread availability of commercial systems has led to the adoption of the technique throughout industry, academia, and government research labs. Objective Even though some research has been done to understand the effects of different experimental and stereo-DIC parameters, no reference is available to benchmark and compare the performance of current stereo-DIC algorithms to each other. Methods This paper provides the description and analysis of a carefully controlled 3D experiment and associated images used to compare the results from five subset based DIC software packages. Both the images and analysis codes used in this paper to compare the results are described here and are available for download and use for continued research. Results We show that over a very large range of motion, the 3D errors are very small, less than 80μm over a travel of ±20 mm out-of-plane and ±20 mm in-plane. While all codes performed similarly, there are important differences noted in the paper. Conclusion The image sets and results comparison software are hosted by the International DIC Society (www.iDICs.org) and are freely available for download and analysis for comparison with results in this paper. Furthermore, it is hoped that this set of images can be used for future research in improving stereo-DIC by future authors.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0003525
OSTI ID:
2588848
Journal Information:
Experimental Mechanics, Journal Name: Experimental Mechanics Journal Issue: 7 Vol. 64; ISSN 1741-2765; ISSN 0014-4851
Publisher:
Springer Science and Business Media LLCCopyright Statement
Country of Publication:
United States
Language:
English

References (23)

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On Error Assessment in Stereo-based Deformation Measurements: Part I: Theoretical Developments for Quantitative Estimates journal February 2011
Error Assessment in Stereo-based Deformation Measurements: Part II: Experimental Validation of Uncertainty and Bias Estimates journal February 2011
A Study of the Influence of Calibration Uncertainty on the Global Uncertainty for Digital Image Correlation Using a Monte Carlo Approach journal June 2013
Stereo-DIC Calibration and Speckle Image Generator Based on FE Formulations journal February 2017
DIC Challenge: Developing Images and Guidelines for Evaluating Accuracy and Resolution of 2D Analyses journal December 2017
Distortion of Digital Image Correlation (DIC) Displacements and Strains from Heat Waves journal November 2017
DIC Challenge 2.0: Developing Images and Guidelines for Evaluating Accuracy and Resolution of 2D Analyses journal January 2022
Use of rigid-body motion for the investigation and estimation of the measurement errors related to digital image correlation technique journal February 2008
Digital Image Correlation with Dynamic Subset Selection journal September 2016
Generic distortion model for metrology under optical microscopes journal April 2018
A comparative study of 3D reconstruction methods in stereo digital image correlation journal November 2019
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High-speed digital image correlation: error estimations and applications journal May 2007
Modified digital image correlation for balancing the influence of subset size choice journal May 2017
Error evaluation technique for three-dimensional digital image correlation journal January 2011
Optimization of a three-dimensional digital image correlation system for deformation measurements in extreme environments journal January 2012
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Optimized digital speckle patterns for digital image correlation by consideration of both accuracy and efficiency journal January 2018
Statistical model for speckle pattern optimization journal November 2017
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