Use of phase-stepping with demodulation and fuzzy sets for birefringence measurement
Use of phase-stepping with demodulation and fuzzy sets for birefringence measurement
复制标题
使用相位步进与解调和模糊集进行双折射测量
DOI：
10.1016/0143-8166(94)00024-5
复制
发表时间：
1995
影响因子：
4.6
通讯作者：
E. Patterson
中科院分区：
文献类型：
--
作者：
Z. F. Wang;E. Patterson
由于双折射数据的周期性以及等倾参数和相对延迟之间的相互作用，限制了相位步进和图像处理在光弹性应力分析中的应用。这些困难已被调查使用信号分析和模糊集理论。提出了一种新的处理双折射材料相位步进数据的策略，包括强度信号的解调和使用模糊集的数据周期的分类。该程序在广泛的应用中工作良好。
The application of phase-stepping and image processing to photoelastic stress analysis is restricted by the periodic nature of the birefringence data generated and the interaction between the isoclinic parameter and relative retardation. These difficulties have been investigated using signal analysis and fuzzy set theory. A new strategy for processing phasestepped data from birefringent materials is proposed and involves demodulation of intensity signals and the classification of periods of data using fuzzy sets. The procedure works well in a wide range of applications.