Please use this identifier to cite or link to this item: https://doi.org/10.1016/0030-3992(95)00064-X
Title: Application of the holographic carrier fringe and FFT technique for deformation measurement
Authors: Quan, C. 
Shang, H.M. 
Bryanston-Cross, P.J.
Keywords: Fast Fourier transform (FFT)
Fibre optics
Holographic interferometry
Holography
Spatial carrier fringes
Issue Date: 1-Feb-1996
Citation: Quan, C., Shang, H.M., Bryanston-Cross, P.J. (1996-02-01). Application of the holographic carrier fringe and FFT technique for deformation measurement. Optics and Laser Technology 28 (1) : 7-13. ScholarBank@NUS Repository. https://doi.org/10.1016/0030-3992(95)00064-X
Abstract: This paper describes a holographic system based on the use of fibre optics and automatic spatial carrier fringe pattern analysis. Carrier fringes are generated by simply translating the object beam between two exposures. Single-mode optical fibres are used to transfer both the object and reference beams. The fast Fourier transform method is used to process the interferograms: it extracts phase from fringe patterns resulting from the interference of tilted wavefronts. The method is illustrated by measuring the deformation of an arbitrarily clamped, uniformly loaded circular plate. The results are given for the perspective plot of the out-of-plane deformation field, the maps of wrapped and unwrapped phase, and a contour map of the unwrapped phase.
Source Title: Optics and Laser Technology
URI: http://scholarbank.nus.edu.sg/handle/10635/57932
ISSN: 00303992
DOI: 10.1016/0030-3992(95)00064-X
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