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20 May 2009Dynamic deformation measurement based on inverse projected fringe technique
In this paper a method for measurement and analysis of dynamic deformation based on inverse projected fringe
technique is presented. This technique is also based on fringe projection but uses an active fringe control. The inverse
fringe pattern is projected onto the surface of a vibrating membrane and a high-speed CCD camera is used to record the
deformed fringe patterns on the membrane. On the recording plan, only the fringes at the deformed area will be curved
while fringes in the other areas remains straight and the deformation of the measured object become much obvious. The
shape and movement of the deforming object can be qualitatively analyzed and recognized by Fourier transform, filtering
and inverse Fourier transform. The movement of a vibrating membrane and a deforming lap are calculated and evaluated.
The results demonstrate this method is feasible and accurate to analyze dynamic deformation.
Wen Li,Qican Zhang, andYuankun Liu
"Dynamic deformation measurement based on inverse projected fringe technique", Proc. SPIE 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 728317 (20 May 2009); https://doi.org/10.1117/12.828657
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Wen Li, Qican Zhang, Yuankun Liu, "Dynamic deformation measurement based on inverse projected fringe technique," Proc. SPIE 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 728317 (20 May 2009); https://doi.org/10.1117/12.828657