Virtual strain gage size study
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
DIC is a non-linear low-pass spatial filtering operation; whether we consider the effect of the subset and shape function, the strain window used in the strain calculation, of other post-processing of the results, each decision will impact the spatial resolution, of the measurement. More fundamentally, the speckle size limits, the spatial resolution by dictating the smallest possible subset. After this decision the processing settings are controlled by the allowable noise level balanced by possible bias errors created by the data filtering. This article describes a process to determine optimum DIC software settings to determine if the peak displacements or strains are being found.
- 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:
- 1334160
- Report Number(s):
- SAND--2015-7954J; 603852
- Journal Information:
- Experimental Techniques, Journal Name: Experimental Techniques Journal Issue: 5 Vol. 39; ISSN 0732-8818
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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