Real-time measurement on deformation fields of notched samples under impact tension

被引：7

作者：

Huang, CG ^{[1
]}

Chen, SY

Duan, ZP

机构：

[1] Chinese Acad Sci, Inst Mech, Natl Key Lab Nonlinear Mech, Beijing 100080, Peoples R China

[2] Beijing Inst Technol, Photoelect Dept, Beijing 100081, Peoples R China

来源：

INTERNATIONAL JOURNAL OF IMPACT ENGINEERING | 2005年 / 31卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Hopkinson bar; optical measurement; digital correlation method;

D O I：

10.1016/j.ijimpeng.2004.01.004

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 [机械工程];

摘要：

In this paper, a real-time and in situ optical measuring system is reported to observe high-velocity deformations of samples subjected to impact loading. The system consists of a high-speed camera, a He-Ne laser, a frame grabber, a synchronization device and analysis software based on digital correlation theory. The optical system has been adapted to investigate the dynamic deformation field and its evolution in notched samples loaded by an split Hopkinson tension bar, with a resolution of 50 pin and an accuracy of 0.5 mum. Results obtained in experiments are discussed and compared with numerical simulations. It is shown that the measuring system is effective and valid. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：329 / 339

页数：11

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