Study of dynamic displacement field measurement using DSPI

Jingwei Tong; Shibin Wang; Hong-Qi Li; X. D. Ni

doi:10.1117/12.509769

29 April 2003 Study of dynamic displacement field measurement using DSPI

Jingwei Tong, Shibin Wang, Hong-Qi Li, X. D. Ni

Proceedings Volume 5058, Optical Technology and Image Processing for Fluids and Solids Diagnostics 2002; (2003) https://doi.org/10.1117/12.509769
Event: Optical Technology and Image Processing for Fluids and Solids Diagnostics 2002, 2002, Beijing, China

Abstract

A technique for measuring in-place displacement under impact loading using digital speckle pattern interferometry (DSPI) with combining the digital subtraction and add mode is presented. A new technique of the add mode filtering is used. To grab the digital speckle of field produced by a pulse laser, an instantaneous digital image grabbing system is proposed. Thus the dynamic digital speckle image can be recorded and stored in a digital frame store. As an example, the displacement field of a semi-infinite model udner impact loading is measured.

Citation Download Citation

Jingwei Tong, Shibin Wang, Hong-Qi Li, and X. D. Ni "Study of dynamic displacement field measurement using DSPI", Proc. SPIE 5058, Optical Technology and Image Processing for Fluids and Solids Diagnostics 2002, (29 April 2003); https://doi.org/10.1117/12.509769

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