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论文类型：期刊论文
发表时间：2015-10-19
发表刊物：OPTICS EXPRESS
收录刊物：SCIE、EI、Scopus
卷号：23
期号：21
页面范围：28067-28075
ISSN号：1094-4087
摘要：An updated B-scan method is proposed for measuring the evolution of thermal deformation fields in polymers. In order to measure the distributions of out-of-plane deformation and normal strain field, phase-contrast spectral optical coherence tomography (PC-SOCT) was performed with the depth range and resolution of 4.3 mm and 10.7 mu m, respectively, as thermal loads were applied to three different multilayer samples. The relation between temperature and material refractive index was predetermined before the measurement. After accounting for the refractive index, the thermal deformation fields in the polymer were obtained. The measured thermal expansion coefficient of silicone sealant was approximately equal to its reference value. This method allows correctly assessing the mechanical properties in semitransparent polymers. (C) 2015 Optical Society of America