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

Digital imaging

Fringe analysis

Pulsed laser operation

Interferometry

Speckle pattern

Digital recording

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