Dynamic liquid surface shape measurement

Xuhua Wu; Lei Chen; Zaihong Tao

doi:10.1117/12.828596

20 May 2009 Dynamic liquid surface shape measurement

Xuhua Wu, Lei Chen, Zaihong Tao

Proceedings Volume 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 72830E (2009) https://doi.org/10.1117/12.828596
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

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.

Citation Download Citation

Xuhua Wu, Lei Chen, and Zaihong Tao "Dynamic liquid surface shape measurement", Proc. SPIE 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 72830E (20 May 2009); https://doi.org/10.1117/12.828596

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