Non-destructive quantification of internal stress in polymer materials by polarisation sensitive optical coherence tomography
Non-destructive quantification of internal stress in polymer materials by polarisation sensitive optical coherence tomography
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DOI：
10.1016/j.actamat.2005.02.034
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发表时间：
2005-05-01
期刊：
影响因子：
9.4
通讯作者：
Stifter, D
中科院分区：
文献类型：
--
作者：
Wiesauer, K;Dufau, ADS;Stifter, D
偏振敏感光学相干断层扫描 (PS-OCT) 是一种干涉技术，用于确定和绘制半透明和浑浊样品的内部双折射特性。由于其无损特性，PS-OCT 是材料表征和测试的理想方法。当分析机械应变引起的双折射图案时，可以获得有关材料内应力的信息。在这项工作中，我们使用 PS-OCT 研究聚合物样品中的应力。根据明确的负载条件下的应变实验，我们通过评估双折射图案来确定不同材料的应力光学系数。应用于由这些材料制成的应变样品时，应力校准允许将双折射与材料内的定量应力值相关联。 (c) 2005 Acta Materialia Inc. 由 Elsevier Ltd 出版。保留所有权利。
Polarisation sensitive optical coherence tomography (PS-OCT) is an interferometric technique to determine and map the internal birefringence properties of translucent and turbid samples. Because of its non-destructive character, PS-OCT is an ideal method for material characterisation and testing. When birefringence patterns induced by mechanical strain are analysed, information about the stress within a material can be obtained. In this work, we investigate the stress in polymer samples using PS-OCT. From strain experiments under well defined loading conditions, we determine the stress optical coefficients for different materials by evaluation of the birefringence patterns. Applied to strained samples fabricated from these materials, the stress calibration allows a correlation of the birefringence with quantitative stress values within the materials. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.