Compression strain measurement by digital speckle correlation

被引：74
|
作者：
Zhang, D [1 ]
Zhang, X [1 ]
Cheng, G [1 ]
机构：
[1] Natl Univ Def Technol, Dept Astron Technol, Changsha 410073, Peoples R China
来源：
EXPERIMENTAL MECHANICS | 1999年 / 39卷 / 01期
关键词：
digital speckle correlation; PFP; deformation measurement;
D O I：
10.1007/BF02329302
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, an optimized digital speckle correlation algorithm, named big-window correlation, is proposed to iterate strain directly. Verified by some experiments, the sensitivity and accuracy of the displacement gradient measurement with this method can be improved greatly. Finally, this method was applied to the measurement of the compression strain for polyurethane foam plastics materials. Then the material properties, such as the module of elasticity and the Poisson ratio, with different mass densities were obtained.
引用
收藏
页码：62 / 65
页数：4
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