Design of a photoelastic measurement of principal stresses by a phase-shifting method

被引：1
|
作者：
Nikova, Tania [1 ,2 ]
Stoykova, Elena [1 ]
机构：
[1] Bulgarian Acad Sci, Inst Opt Mat & Technol, BU-1113 Sofia, Bulgaria
[2] Univ Architecture Civil Engn & Geodesy, Sofia 1046, Bulgaria
来源：
PHYSICA SCRIPTA | 2014年 / T162卷
关键词：
photoelasticity; Jones calculus; phase-shifting measurement; STEPPING INTERFEROMETRIC PHOTOELASTICITY; SEPARATION;
D O I：
10.1088/0031-8949/2014/T162/014043
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A popular approach to photoelastic stress measurement is capture of a set of fringe patterns in which preliminary known phase shifts are introduced by changing orientation of the polarizing optical elements. Analysis of the photoelastic system is based on the Jones matrices formalism. The work presents a rationalized method for fast calculation of Jones matrices through introduction of a 'binary' algebra. The method makes possible to design a set of phase shifts and facilitates comparison of the phase-shifting algorithms in order to choose the most effective one. The proposed method is verified by simulation of the photoelastic system based on expressions for the complex amplitude of the light beam passing through the different polarizing elements.
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页数：5
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