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Experimental Mechanics

Erschienen in:

12.04.2021 | Research paper

A Frequency Domain Error Model for Local 2D-DIC

verfasst von: Z. Wang, K. Kang, Z Wang, H. Wu, S. Wang, L. Li, C. Li

Erschienen in: Experimental Mechanics | Ausgabe 6/2021

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Abstract

Background

Digital image correlation (DIC) has become a superior tool for surface deformation measurement so far. In order to improve its measurement accuracy, different error models have been developed to reveal the cause of various error.

Objective

An error model unifying the random error and systematic error should be valuable.

Method

In this paper, a frequency-domain error model for 2D-DIC is established based on Fourier analysis. Using the model, the error caused by random noise, subpixel interpolation and the combination of the two can be analyzed and predicted.

Results

Numerical experiments were conducted to verify the effectiveness of the proposed models. The results from theoretical models and numerical experiments are in a good agreement.

Conclusions

It is demonstrated that the proposed model is a generalization of several previously established models.

Vorheriger Artikel Drone-Based StereoDIC: System Development, Experimental Validation and Infrastructure Application

Nächster Artikel Micro-deformation Study of Stainless Steel Impacted by Ceramic Particle Using Electron Moiré Method

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Titel: A Frequency Domain Error Model for Local 2D-DIC
verfasst von: Z. Wang
K. Kang
Z Wang
H. Wu
S. Wang
L. Li
C. Li
Publikationsdatum: 12.04.2021
Verlag: Springer US
Erschienen in: Experimental Mechanics / Ausgabe 6/2021
Print ISSN: 0014-4851
Elektronische ISSN: 1741-2765
DOI: https://doi.org/10.1007/s11340-021-00717-6

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Abstract

Background

Objective

Method

Results

Conclusions

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