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Proceedings Paper

Application of circular and radial gratings in digital moiré method
Author(s): Xia Xiao; Yilan Kang; Xiaolei Li; Zhende Hou; Haoyun Tan; Xiaoqi Li
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Paper Abstract

Circular and radial gratings are used in digital moiré method in order to obtain in-plane displacement and strain information denoted in polar coordinate system directly. Four-step phase-shifting technique is achieved by shifting the computer-generated reference radial and circular gratings precisely. Basic procedures of this novel digital moiré method with circular and radial gratings are explained in detail by an experimental application for large deformation analysis on a double-cracked rubber disk. By using deformed gratings, radial and circular displacements distributions are measured and distributing information of strains can also be calculated. Results of the application show that the present digital moiré technique of circular and radial gratings is a valid and efficient way in measurement of both displacement and deformation for large deformation materials.

Paper Details

Date Published: 25 August 2009
PDF: 7 pages
Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 73750D (25 August 2009); doi: 10.1117/12.839016
Show Author Affiliations
Xia Xiao, Tianjin Univ. (China)
Yilan Kang, Tianjin Univ. (China)
Xiaolei Li, Hebei Univ. of Technology (China)
Zhende Hou, Tianjin Univ. (China)
Haoyun Tan, Tianjin Univ. (China)
Xiaoqi Li, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 7375:
ICEM 2008: International Conference on Experimental Mechanics 2008
Xiaoyuan He; Huimin Xie; YiLan Kang, Editor(s)

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