Study on several problems of automatic full-field isoclinic parameter measurement by digital phase shifting photoelasticity

被引：13
|
作者：
Shang, Wei [1 ,2 ]
Ji, Xinhua [3 ]
Yang, Xiaojing [4 ]
机构：
[1] Tianjin Chengjian Univ, Inst Engn Mech, Tianjin 300384, Peoples R China
[2] Tianjin Chengjian Univ, Tianjin Key Lab Soft Soil Characterist & Engn Env, Tianjin 300384, Peoples R China
[3] Tianjin Univ, Dept Mech, Tianjin 300072, Peoples R China
[4] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China
来源：
OPTIK | 2015年 / 126卷 / 19期
基金：
中国国家自然科学基金;
关键词：
Photoelasticity; Six-step phase shifting; Isoclinic; Isochromatic;
D O I：
10.1016/j.ijleo.2015.05.053
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The determination of isoclinic parameter from photoelastic fringe patterns is a key problem in photoelasticity. However, it is not a simple task due to the influence of the isochromatic parameter. The purpose of this paper is to achieve the full-field isoclinic parameter measurement automatically by six-step digital phase shifting photoelasticity. However, there are several key problems, such as the range of the isoclinic parameter, the isoclinic-isochromatic interaction, and the influence of special points such as free corner point, singular point and isotropic point. Through analyzing these problems, we present an appropriate algorithm to get the correct full-field isoclinic parameter automatically which is validated by simulation and experiment. This method is simple and effective to solve the problems of the isoclinic-isochromatic interaction and the isoclinic parameter error around the special points. (C) 2015 Elsevier GmbH. All rights reserved.
引用
收藏
页码：1981 / 1985
页数：5
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