Open Access

ABSTRACT

Phase analysis for out-of-plane displacement measurement using laser lines generated in camera with diffraction grating

Wei Jiang^1,*, Takuya Hara¹, Motoharu Fujigaki¹

1 Graduate School of Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui and 910-8507, Japan.

* Corresponding Author: Wei Jiang. Email:

The International Conference on Computational & Experimental Engineering and Sciences 2021, 23(1), 22-23. https://doi.org/10.32604/icces.2021.08551

Abstract

In this study, a sampling moire method in which parallel laser lines were generated in a camera using a diffraction grating was proposed. A green laser of line projection function, a diffraction grating and an industrial camera were used as an experimental device. Object images with laser line projection before and after displacement were taken by the camera. Displacements that calculated by a sampling moire method and a method of averaging center-ofgravity were be compared. Results show that the proposed method is more precision than method of averaging center-of-gravity.

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Keywords

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