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Theoretical analysis on the measurement errors of local 2D DIC: Part I temporal and spatial uncertainty quantification of displacement measurements

Journal Article · · Strain
DOI:https://doi.org/10.1111/str.12173· OSTI ID:1319535
 [1];  [1];  [2];  [1];  [3]
  1. KU Leuven Campus Gent, Ghent (Belgium)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  3. KU Leuven, Heverlee (Belgium)
This study presents a theoretical uncertainty quantification of displacement measurements by subset-based 2D-digital image correlation. A generalized solution to estimate the random error of displacement measurement is presented. The obtained solution suggests that the random error of displacement measurements is determined by the image noise, the summation of the intensity gradient in a subset, the subpixel part of displacement, and the interpolation scheme. The proposed method is validated with virtual digital image correlation tests.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1319535
Report Number(s):
SAND--2014-18663J; 540276
Journal Information:
Strain, Journal Name: Strain Journal Issue: 2 Vol. 52; ISSN 0039-2103
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (6)

Digital Image Correlation with Enhanced Accuracy and Efficiency: A Comparison of Two Subpixel Registration Algorithms journal June 2016
Self-Adaptive Digital Volume Correlation for Unknown Deformation Fields journal November 2018
Error estimation of 3D reconstruction in 3D digital image correlation journal January 2019
Anisotropic self-adaptive digital volume correlation with optimal cuboid subvolumes journal September 2019
A parametric study of DIC measurement uncertainties on cracked metals journal July 2018
Theoretical analysis on performance of digital speckle pattern: uniqueness, accuracy, precision, and spatial resolution journal January 2019

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