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

Chenguang Huang; Siying Chen; Zhuping Duan

doi:10.1016/j.ijimpeng.2004.01.004

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

Chenguang Huang^*, Siying Chen, Zhuping Duan

^*Corresponding author for this work

School of Optics and Photonics

CAS - Institute of Mechanics

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

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 μm and an accuracy of 0.5 μm. Results obtained in experiments are discussed and compared with numerical simulations. It is shown that the measuring system is effective and valid.

Original language	English
Pages (from-to)	329-339
Number of pages	11
Journal	International Journal of Impact Engineering
Volume	31
Issue number	4
DOIs	https://doi.org/10.1016/j.ijimpeng.2004.01.004
Publication status	Published - Apr 2005

Keywords

Digital correlation method
Hopkinson bar
Optical measurement

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10.1016/j.ijimpeng.2004.01.004

Cite this

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abstract = "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 μm and an accuracy of 0.5 μm. Results obtained in experiments are discussed and compared with numerical simulations. It is shown that the measuring system is effective and valid.",

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AU - Chen, Siying

AU - Duan, Zhuping

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AB - 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 μm and an accuracy of 0.5 μm. Results obtained in experiments are discussed and compared with numerical simulations. It is shown that the measuring system is effective and valid.

KW - Digital correlation method

KW - Hopkinson bar

KW - Optical measurement

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SP - 329

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JO - International Journal of Impact Engineering

JF - International Journal of Impact Engineering

IS - 4

ER -

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

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Keywords

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