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Optical Engineering

Study on in-plane displacement measurement under impact loading using digital speckle pattern interferometry
Author(s): Jingwei Tong; Dong Sheng Zhang; Hong-Qi Li; Linan Li
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Paper Abstract

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.

Paper Details

Date Published: 1 April 1996
PDF: 4 pages
Opt. Eng. 35(4) doi: 10.1117/1.600787
Published in: Optical Engineering Volume 35, Issue 4
Show Author Affiliations
Jingwei Tong, Tianjian Univ. (China)
Dong Sheng Zhang, Tianjin Univ. (United States)
Hong-Qi Li, Tianjin Univ. (China)
Linan Li, Tianjin Univ. (China)


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