Theoretical analysis on the measurement errors of local 2D DIC: Part I temporal and spatial uncertainty quantification of displacement measurements
- KU Leuven Campus Gent, Ghent (Belgium)
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- 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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