二次元モアレ干渉法における干渉じまのフーリエ変換による分離・抽出

概要

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Moire interferometry can measure two-dimensional in -plane displacement distributions from x- and y- directional fringe patterns obtained by two sets of two beams. If the four beams are incident simultaneously, not only are the two-directional fringe patterns recorded on one image, but also other fringes are recorded simultaneously. In this paper, a method using Fourier transform is proposed in order to extract the necessary fringe pattern. An image of two-directional fringe pattinge with carriers obtained simultaneously by the four beams is recorded, and each directional first harmonic of the Fourier spectrum of the image is filtered for the purpose of selection. The phase distribution of the inverse Fourier transform of each directional first hamonic provides each directional displacement distribution.
社団法人日本機械学会の論文
1993-03-25