222 Stress Evaluation in Superposed Plane Layers using Jones Matrix Image Fourier Polarimeter Technique
Details
The aim of this study is to construct Jones Matrix Image Fourier Polarimeter for measuring internal stress state of 3-D object. By introducing various methods such as phase shifting and phase unwrapping techniques, this system have been proved to be a possibly available method to measure three optical parameters σ, θ, and ε in 2-D analysis. However, in the case of a 3-D analysis, we have various problems because the rotation of principal axis along light path affects these optical parameters seriously. In this paper, the authors prepare 3-D slice model consist of two thin glass disks and analyze three optical parameters influenced by the rotation of principal axis. As the results, in 3-D analysis, we found that phase difference σ can be treated as integrated value, on the other hand, azimuth angle θ can be treated as average value. And furthermore, ellipticity angle ε increased suddenly in superposed analysis.
