编入碳纤维编织复合材料的光纤光学性能实验研究

摘要

3-D braiding technology has stimulated a great deal of interest in the world at large and been widely used in aerospace, military, civil construction and medical fields.Although 3-D braided composites have many good fea tures, their features are very complicated. Optic fiber sensors can be multi-braided into 3-D braided composites to fulfill a new kind of 3-D smart composites to monitor RTM process, study mechanical behaviors and damage states after molding, and monitor its own condition during service life. Since optic performances of optic fibers have direct and important relation to the performances of optic fiber sensors, experimental research is done to devise a method to incorporate the optic fiber into a 3-D structure. The optical performances of the braided optic fibers are tested and compared with the original one to study the optic performances of optic fibers, before their being braided into composites and after the RTM process.%三维编织复合材料是当前先进复合材料领域研究的热点并已开始广泛应用于航空航天等许多领域.三维编织复合材料具有很多优点,但这种材料的性能也较复杂.文中提出一种研究三维编织复合材料性能的新方法,也即将光纤传感器多个编入编织复合材料实现编织智能复合材料,以监测三维编织复合材料的RTM工艺过程,研究其力学性能及监测其在使用过程中的健康状况.对于光纤传感器而言,光纤的光学性能的好坏同光纤传感器的性能密切相关,因此,着重通过实验提出了一种光纤编入三维编织复合材料的方法并对光纤编入材料前后及编入后随材料进行RTM固化前后的光学性能进行了测试对比研究.