纤维复合材料透射式光弹性方法中的偏振光学问题

本文总结了用显微激光分析仪对一般纤维增强复合材料进行透射式光弹性研究的近期工作。针对纤维复合材料违反传统光弹理论的偏振光学行为,讨论了纤维、基体的双折射率不同以及由纤维与基体的界面两侧出射的光在Airy斑重叠区发生干涉等问题,从更一般的角度探讨了最近的文章中所提出的新光弹公式中所含两个滞后量的存在性。 

POLARIZING OPTIC PROBLEMS IN THE TRANSPARENT PHOTOELASTIC STUDY OF FIBER REINFORCED COMPOSITES

This paper summarizes the reccut investigations on the optical trans-porting phenomenon through anisotropic and hetergencous Fiber reinforced com-positcs. With the use of a Laser-microscope Analyser, recent: study revealed that the polarizing optic behavior of optically heterogeneous fiber reinforced composites is quite different from that of homogeneous birefringent materials which are well defined and described by the conventional theory of Jone's matrix theory of photoelasticity. In the attempt to interpret the strange phenomena, two major facts are discussed. One is the influence of the birefringent difference of fibers and resin matrix. The other is the influence of interference due to the light waves emerging respectively from fiber and its adjoining zone of resin matrix and probably in the overlapping zone of their Airy Marks on the photoelectric detector surface. The existing possibility of the so called 'two element retardations', introduced in a later paper, is discussed.