Application of the holographic carrier fringe and FFT technique for deformation measurement
UNSPECIFIED (1996) Application of the holographic carrier fringe and FFT technique for deformation measurement. OPTICS AND LASER TECHNOLOGY, 28 (1). pp. 7-13. ISSN 0030-3992Full text not available from this repository.
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.
|Item Type:||Journal Article|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||OPTICS AND LASER TECHNOLOGY|
|Number of Pages:||7|
|Page Range:||pp. 7-13|
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