Study on in-plane displacement measurement under impact loading using digital speckle pattern interferometry

Jingwei Tong; Dong Sheng Zhang; Hong-Qi Li; Linan Li

doi:10.1117/1.600787

1 April 1996 Study on in-plane displacement measurement under impact loading using digital speckle pattern interferometry

Jingwei Tong, Dong Sheng Zhang, Hong-Qi Li, Linan Li

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Optical Engineering, Vol. 35, Issue 4, (April 1996). https://doi.org/10.1117/1.600787

A technique for measuring in-plane displacement under impact loading using digital speckle pattern interferometry (DSPI) is presented. To capture the speckle field produced by a ruby laser, an instantaneous digital image capturing system is proposed. Thus the dynamic speckle images can be recorded and stored in a digital frame store and the quality of speckle fringe patterns is improved using digital subtraction. As an example, the displacement field of a semi-infinite model under impact loading is measured. The results show agreement with those of the finite element method.

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Jingwei Tong, Dong Sheng Zhang, Hong-Qi Li, and Linan Li "Study on in-plane displacement measurement under impact loading using digital speckle pattern interferometry," Optical Engineering 35(4), (1 April 1996). https://doi.org/10.1117/1.600787

Published: 1 April 1996

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