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

被引：53

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

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