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Proceedings Paper

Dynamic liquid surface shape measurement
Author(s): Xuhua Wu; Lei Chen; Zaihong Tao
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Paper Abstract

In this paper, dynamic liquid surface measurements using non-disturbing technique based on interferogram analysis with moiré method are described. A sequence of dynamic deformed fringe images can be grabbed by a phase-shifting interferometer (PSI) and saved on disk rapidly. By Fourier transform, filtering, phase-shifting through virtual grating and unwrapping these phase maps in 3-D phase space, the shape of a vortex at different times is obtained. Compared with others traditional methods such as Fourier transform profilometry(FTP) and phase measuring profilometry(PMP), the method proposed has characteristics of no phase shifting error, simplicity, accuracy, automatic, high speed and relativly low price. The experimental results show that interferogram analysis with moiré method can deal with the dynamic liquid surface shape measurement efficiently. Furthermore, it can be used widely in fluid dynamics, chemical, metallurgy and some other fields.

Paper Details

Date Published: 20 May 2009
PDF: 4 pages
Proc. SPIE 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 72830E (20 May 2009); doi: 10.1117/12.828596
Show Author Affiliations
Xuhua Wu, Nanjing Univ. of Information Science & Technology (China)
Lei Chen, Nanjing Univ. of Science & Technology (China)
Zaihong Tao, Nanjing Univ. of Information Science & Technology (China)


Published in SPIE Proceedings Vol. 7283:
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Yudong Zhang; James C. Wyant; Robert A. Smythe; Hexin Wang, Editor(s)

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