The experiment of in-plane impact based on two-dimensional high speed camera system

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (24) : 84-87.

Yan Fang Deng Xiaowei Yu Zhengyue Hong Jiazheng

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Abstract

In this study, an in-plane direct impact experiment is designed using a rod and a plane. Three methods are studied in measuring the responses of the experiment, Laser-Doppler-Vibrometer, strain gauge and high speed camera system. The advantages and disadvantages of the three methods are analyzed. The experiment indicates that LDV and strain gauge could measure the velocity and strain of a single point accurately, while the two-dimensional high speed camera could measure the velocity and strain of whole pattern, which show the development of strain during the contact. The results demonstrate the applicability of the high-speed camera in the research of low-speed impact. However, after the contact period, there are some obvious wave errors in the strain and velocity results of the two-dimensional high speed camera, owning to the out-plane displacements which may be caused by the vibration of plate.

Key words

impact / experiment / high-speed camera / Laser-Doppler-Vibrometer / contact dynamics / digital image correlation

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Yan Fang Deng Xiaowei Yu Zhengyue Hong Jiazheng. The experiment of in-plane impact based on two-dimensional high speed camera system[J]. Journal of Vibration and Shock, 2016, 35(24): 84-87

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