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arXiv 1111.1918physics.optics
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用偏振敏感光学相干层析术测量材料中的空间分辨应力:图像获取和处理方面

Spatially resolved stress measurements in materials with polarization-sensitive optical coherence tomography: image acquisition and processing aspects

Bettina Heise, Karin Wiesauer, Erich Götzinger, Michael Pircher, Christoph K. Hitzenberger, Rainer Engelke, Gisela Ahrens, Gabi Grützner, David Stifter

摘要:

我们证明,偏振敏感光学相干断层扫描(PS-OCT)是适合映射的应力分布在材料中的非接触和非破坏性的方式。与透射光弹性测量相反,样品不必是透明的,但可以是散射性质的。在单PS-OCT延迟图像中的条纹图案的去噪和分析被证明提供的基础上进行调查的样品的内部应力状态的定量全场评估。

英文摘要:

We demonstrate that polarization-sensitive optical coherence tomography (PS-OCT) is suitable to map the stress distribution within materials in a contactless and non-destructive way. In contrast to transmission photoelasticity measurements the samples do not have to be transparent but can be of scattering nature. Denoising and analysis of fringe patterns in single PS-OCT retardation images are demonstrated to deliver the basis for a quantitative whole-field evaluation of the internal stress state of samples under investigation.

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