Theoretical Analysis on the Measurement Errors of Local 2D DIC: Part I Temporal and Spatial Uncertainty Quantification of Displacement Measurements

被引：52

作者：

Wang, Y. ^{[1
]}

Lava, P. ^{[1
]}

Reu, P. ^{[2
]}

Debruyne, D. ^{[1
]}

机构：

[1] KU Leuven Campus Gent, Dept Mat Engn, Gebroeders Desmetstr 1, B-9000 Ghent, Belgium

[2] Sandia Natl Labs, Albuquerque, NM USA

来源：

STRAIN | 2016年 / 52卷 / 02期

基金：

美国能源部;

关键词：

random displacement error; theoretical analysis; 2D-DIC; DIGITAL IMAGE CORRELATION; INTENSITY PATTERN NOISE; SYSTEMATIC-ERRORS; DEFORMATION MEASUREMENTS; STRAIN-MEASUREMENT; SPECKLE PATTERNS; MOTION;

D O I：

10.1111/str.12173

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper presents a theoretical uncertainty quantification of displacement measurements by subset-based 2D-digital image correlation. A generalised 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.

引用

页码：110 / 128

页数：19

共 4 条

[1] Theoretical Analysis on the Measurement Errors of Local 2D DIC: Part II Assessment of Strain Errors of the Local Smoothing Method-Approaching an Answer to the Overlap Question
Wang, Y.
Lava, P.
Reu, P.
Debruyne, D.
STRAIN, 2016, 52 (02) : 129 - 147
[2] Unsupervised CNN-based DIC method for 2D displacement measurement
Wang, Yixiao
Zhou, Canlin
OPTICS AND LASERS IN ENGINEERING, 2024, 174
[3] A Displacement Uncertainty Model for 2-D DIC Measurement Under Motion Blur Conditions
Lavatelli, Alberto
Zappa, Emanuele
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2017, 66 (03) : 451 - 459
[4] ECI-Net: A modular and lightweight Deep DIC network for real-time robust 2D displacement measurement
Wang, Zitong
Zhu, Pan
Guan, Jiaxi
Liu, Lu
Zhou, Xinglin
OPTICS AND LASER TECHNOLOGY, 2025, 183

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