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Optical Engineering

Optical 3-D shape and deformation measurement of rotating blades using stroboscopic structured illumination
Author(s): Qican Zhang; Xianyu Su; Yiping Cao; Yong Li; Liqun Xiang; Wenjing Chen
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Paper Abstract

An optical method for shape and deformation measurement of a rotating blade, which is based on Fourier transform profilometry (FTP) and the stroboscopic effect, is proposed and has been verified by experiments. The integrated principles of the method, the process of 3-D phase unwrapping, and the detailed design of the synchronization control unit are discussed. Experimental results on a commercial electric fan prove that FTP can reconstruct the shape of a rotating blade efficiently and reveal its deformation different times clearly by using stroboscopic structured illumination. This method can be used for studying high-speed motion with rapid periodic signals.

Paper Details

Date Published: 1 November 2005
PDF: 7 pages
Opt. Eng. 44(11) 113601 doi: 10.1117/1.2127927
Published in: Optical Engineering Volume 44, Issue 11
Show Author Affiliations
Qican Zhang, Sichuan Univ. (China)
Xianyu Su, Sichuan Univ. (China)
Yiping Cao, Sichuan Univ. (China)
Yong Li, Sichuan Univ. (China)
Liqun Xiang, Sichuan Univ. (China)
Wenjing Chen, Sichuan Univ. (China)

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