光纤微弯压力测试系统实时监测复合材料热压成型过程

基金项目: 国家自然科学基金重点项目(No. 59833110); 国家863 项目(No. 2001AA335020)

详细信息

A FIBER OPTICAL MICROBEND SENSOR USED FOR ON-LINEMONITORING IN AUTOCLAVE PROCESS

1.
School of Materials Science and Engineering, Beijing University of Aeronautics and Ast ronautics, Beijing 100083, China;

摘要

摘要: 利用自行研制的光纤微弯压力测试系统, 对树脂基复合材料热压成型过程进行实时监测。实验结果表明, 该系统除了能较好地反映垂直层板方向压力变化外, 还能提供加压过程树脂流动状态及层板密实达到稳态均匀时间的相关信息。这些结果对确定合理加压点及保压时间、优化工艺参数、控制复合材料成型构件质量具有十分重要的意义。
- 复合材料 /
- 热压成型工艺 /
- 光纤传感器 /
- 实时监测
Abstract: An optical fiber sensor system , established by our laboratory , was used to measure the pressure changein the normal direction of prepreg layers to monitor the cure process. The optical fiber sensor is embedded in theprepreg and the change of output voltage can reflect the change of compacting pressure between fibers and the compacting degree of composite laminates. The experimental result s show that the system can not only reflect the pressure change in the normal direction of prepreg layers during cure molding process , but also provide some useful datafor layer consolidation and resin flowing. The data are very important to determine the pressurized point and optimize cure processing and cont rol the performances of composite parts.
- composites /
- autoclave process /
- fiber optical pressure sensor /
- on-line monitor