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

页码：719 / 725

页数：7

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