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Proceedings Paper

Phase-continuous scan DSPI technique for measuring vibration mode
Author(s): Shuhai Jia; Kaiduan Yue; Yushan Tan
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Paper Abstract

The phase continuous scan technique is combined with the Bessel fringe-shifting technique to quantitatively analyze the vibration mode by time-averaging DSPI. Through the phase continuous scan, the background and speckle items are completely eliminated, which improves the fringe quality and enhances the signal-to-noise ratio of interferogram. There is no need to calibrate the optical phase-shifter exactly in this method. The anti-disturbance capability of this method is higher than that of the phase-stepping technique, so it is robust and easy to be used.

Paper Details

Date Published: 13 October 1999
PDF: 6 pages
Proc. SPIE 3783, Optical Diagnostics for Fluids/Heat/Combustion and Photomechanics for Solids, (13 October 1999); doi: 10.1117/12.365763
Show Author Affiliations
Shuhai Jia, Xi'an Jiaotong Univ. (China)
Kaiduan Yue, Xi'an Jiaotong Univ. (China)
Yushan Tan, Xi'an Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 3783:
Optical Diagnostics for Fluids/Heat/Combustion and Photomechanics for Solids
Soyoung Stephen Cha; Peter John Bryanston-Cross; Carolyn R. Mercer, Editor(s)

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