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This content will become publicly available on December 23, 2016

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

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.
Authors:
 [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)
Publication Date:
OSTI Identifier:
1319535
Report Number(s):
SAND--2014-18663J
Journal ID: ISSN 0039-2103; 540276
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Strain
Additional Journal Information:
Journal Volume: 52; Journal Issue: 2; Journal ID: ISSN 0039-2103
Publisher:
Wiley
Research Org:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING 2D-DIC; random displacement error; theoretical analysis