多模光纤微弯压力传感器在真空辅助成型工艺中的应用  

Application of multi-mode optical fiber micro-bend sensor for pressure measurement in the Vacuum Assisted Forming process

作　　者：莫淑华[1] 叶树江[1] 王丽雪[1] 于久灏[1] 尹志娟[1] 王威[1] 于东[2] 

机构地区：[1]黑龙江工程学院材料与化学工程学院,黑龙江哈尔滨150050 [2]哈尔滨工业大学,黑龙江哈尔滨150010

出　　处：《黑龙江工程学院学报》2014年第5期24-26,共3页Journal of Heilongjiang Institute of Technology

基　　金：黑龙江省重点自然科学基金资助项目(ZJG0607-02)

摘　　要：真空辅助成型是一种新型的低成本复合材料成型工艺。在成型过程中,压力控制对产品的成型质量起着重要作用。分析光纤微弯传感器在树脂基复合材料成型过程压力检测中的应用条件,以及真空辅助成型工艺环境对光纤微弯传感器测试结果的主要影响。实验结果表明:光纤微弯传感器在单层真空袋的液体成型过程中,同时受到成型过程中的压力变化导致光纤弯曲和由于树脂包裹引起折射率变化两个因素的影响。以此为基础实现对复合材料真空辅助成型工艺中压力与树脂流动前锋的测量。Vacuum Assisted Forming is a new type of low-cost composite forming process, and the compression controlling plays an important role on forming quantity in this procedure. It analyzes the application condition of the optical fiber micro-bend sensor for pressure measurement during the forming process of resin matrix composites, and the main influence of the test results from optical fiber micro bend sensor under the process environment of Vacuum Assisted Resin Infusion （VARI）. The experiment demonstrates that, in the liquid forming process of single vacuum bag, the optical fiber micro-bend sensor is influenced by two factors, which are the bending of the optical fiber caused by pressure of forming process, and the variation of reflective index resulted by enclosing the resin. Based on the given factors.and the experiment results, the accurate measurement of the pressure during process of composite material in VARI and the resin flow front are implemented.

关 键 词：真空辅助成型 微弯传感器 多模光纤 压力传感器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]