A method for evaluating full-field stress components from a single image in interferometric photoelasticity

被引：11
|
作者：
Yoneyama, S. [1 ]
Kamihoriuchi, H. [1 ]
机构：
[1] Aoyama Gakuin Univ, Dept Mech Engn, Kanagawa 2298558, Japan
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 2009年 / 20卷 / 07期
基金：
日本学术振兴会;
关键词：
stress analysis; stress separation; interferometry; photoelasticity; Mach-Zehnder interferometer; micro-retarder array; MICRO-RETARDER ARRAY; PHASE; SEPARATION; POLARIMETER; SURFACES; LIGHT;
D O I：
10.1088/0957-0233/20/7/075302
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A method for determining stress components from a single image is proposed in two-dimensional interferometric photoelasticity. A two-dimensional birefringent specimen placed in a Mach-Zehnder interferometer is observed using a CCD camera equipped with a pixelated micro-retarder array. The light emerging from the Mach-Zehnder interferometer contains the information of the difference and the sum of principal stresses, and the principal direction. The distribution of the Stokes parameters of the light vector is determined from a single image since the CCD camera with a micro-retarder array can instantaneously record multiple pieces of information. Then, the distribution of the stress components can be evaluated from the Stokes parameters. It is expected that this method can be applied to time-varying phenomena since multiple exposures are not necessary for the completion of stress components analysis.
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收藏
页数：8
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