用光纤进行树脂基复合材料的成型过程监测  

Insitu Cure Monitoring of Fabrication of Epoxy ResinComposites with a Novel Fiberoptic Sensor

作　　者：杨春[1] 骆飞[1] 沈超[2] 李宏运[2] 张宝艳[2] 

机构地区：[1]南京航空航天大学测试工程系 [2]北京航空材料研究院

出　　处：《材料工程》1999年第7期36-39,共4页Journal of Materials Engineering

摘　　要：研究了用光纤对碳纤维环氧树脂复合材料成型过程进行实时监测的方法和系统。通过测量复合材料成型过程中树脂折射率的变化来反映树脂的粘度变化和固化过程。设计了一种用于固化监测的光纤传感探头，可以在很大的程度上减弱树脂中缺陷对测量的影响，并且使用方便。研制了复合材料成型过程计算机实时监测系统。用该系统在压机上对碳纤维环氧树脂复合材料的模压成型过程进行了实时监测实验。实验结果表明，该系统工作稳定、可靠，测试结果反映了树脂的固化过程。A costeffective approach is supposed to insitu monitor the fabrication of epoxy resin composites with a fiberoptic sensor. A fiberoptic evanescent wave refractive index sensor is made by removing a short region of the cladding of a low refractive step index optical fiber. The sensor is used to insitu monitor the viscosity variation and cure process during the fabrication. As the sensor respones the integrated effects along the sensing region, the influences of the defects in the resin such as voids and impurity can be reduced on a large extent. In order to facilitate the operation, a probe configuration is made by depositing a retroreflectic film on the distal end of the optic fiber near the sensing region. Experiments have been performed on the epoxy prepreg hot pressing to test the feasibility of the supposed approach.

关 键 词：复合材料 固化监测 光纤 折射率 树脂基 

分 类 号：TB332[一般工业技术—材料科学与工程]