利用FBG传感器对采用真空导入模塑工艺制作的CF/GF(Carbon Fiber/Glass Fiber)混杂复合材料在固化成型过程中以及成型后的界面性能进行了检测,此外,为了对比研究混杂复合材料的性能,还检测了CF/CF层和GF/GF层在成型和成型后的应变变化.结果显示:GF/GF、GF/CF和CF/CF复合材料的应变与温度之间存在良好的线性关系,且热膨胀系数的大小顺序为GF/GF层＞GF/CF层＞CWCF层;FBG传感器监测CF/GF混杂复合材料热膨胀系数的转折温度与基体树脂的Tg值(79.09℃)相吻合;CF/GF混杂复合材料在20～120℃范围内升温、降温过程中未发生界面破坏.
In this paper,the FBG sensor was used to study the interfacial properties of CF/GF hybrid composites during and after the curing process.In order to investigate the properties of hybrid composites,the strain changes in CF/CF layer and GF/GF layer are also monitored.The results show that when no external force,good linear relationship between strain and temperature existed in GF/FG,GF/CF and CF/CF layers,and the order of thermal expansion coefficient is:GF/GF layer＞GF/CF layer＞CF/CF layer.FBG sensor for the monitoring of CF/GF hybrid composite heat swelling values for the coefficient of the transition temperature and the matrix resin (79.09 ℃) coincide.CF/GF hybrid composites in 20～ 120 ℃ heating and cooling process do not show destruction of the interface.
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