Dynamic optical studies in materials testing with spectral-domain polarization-sensitive optical coherence tomography
Dynamic optical studies in materials testing with spectral-domain polarization-sensitive optical coherence tomography
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DOI：
10.1364/oe.18.025712
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发表时间：
2010-12-06
期刊：
影响因子：
3.8
通讯作者：
Heise, Bettina
中科院分区：
文献类型：
--
作者：
Stifter, David;Leiss-Holzinger, Elisabeth;Heise, Bettina
通过将动态力学测试与在1550 nm处进行的光谱域偏振敏感光学相干断层扫描（SD-PS-OCT）相结合，我们能够首次直接研究拉伸和断裂测试期间散射技术材料内的变化。空间和时间变化的偏振模式，由于缺陷和材料的不均匀性，观察到散装聚合物样品内，并用于最终获得-与先进的图像处理算法的帮助下-不断变化的内部应力分布的定量地图。此外，局部增加的纤维增强复合材料内的应力被确定在原位与SD-PS-OCT导致去极化网站的纤维基体脱粘之前，发生完全的结构故障。(C)2010年美国光学学会
By combining dynamic mechanical testing with spectral-domain polarization-sensitive optical coherence tomography (SD-PS-OCT) performed at 1550 nm we are able to directly investigate for the first time changes within scattering technical materials during tensile and fracture tests. Spatially and temporally varying polarization patterns, due to defects and material inhomogeneities, were observed within bulk polymer samples and used to finally obtain - with the help of advanced image processing algorithms - quantitative maps of the evolving internal stress distribution. Furthermore, locally increased stress within fiber-reinforced composite materials was identified in situ with SD-PS-OCT to cause depolarizing sites of fiber-matrix debonding prior the onset of complete structural failure. (C) 2010 Optical Society of America