Application of Digital Image Correlation Method to In-Situ Dynamic Strain Measurement

被引：0
|
作者：
林烈雄 [1 ]
陆皓 [1 ]
徐济进 [1 ]
陈俊梅 [1 ]
余春 [1 ]
机构：
[1] School of Materials Science and Engineering,Shanghai Jiao Tong University
来源：
JournalofShanghaiJiaotongUniversity(Science) | 2017年 / 22卷 / 06期
基金：
中国国家自然科学基金;
关键词：
digital image correlation(DIC); in-situ dynamic strain; metallic material; deformation measurement;
D O I：
暂无
中图分类号：
TG806 [技术测量方法];
学科分类号：
摘要：
Application of digital image correlation(DIC) method to determination of in-situ dynamic strain is presented in this study. Firstly, an integrative software is programmed based on the DIC algorithms and pointwise least-squares fitting technique. Then, simulated speckle images are generated to study the computational accuracy of this software. The experimental setup and procedures for measuring in-situ dynamic strain through both DIC and strain gauge are proposed. The DIC results are close to those measured by strain gauge. This fact reveals that DIC is a practical and effective tool for in-situ dynamic strain measurement. Finally, the full-field in-situ dynamic strain of another specimen is measured by DIC, and the overall distribution of the strain in the measurement area is clearly shown.
引用
收藏
页码：719 / 725
页数：7
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