对Bragg光栅在VARTM成型工艺中树脂流动过程及复合材料拉伸性能测试进行了研究。实验结果表明,在树脂流动过程中,通过波长随时间的变化可确定树脂流动前沿位置。当光纤的埋入方向平行于树脂流动方向时,光纤与复合材料的相容性较好。在拉伸过程中,光栅波长的变化与外加载荷呈良好的线性关系。因此,通过光栅波长的变化可进行树脂流动过程以及复合材料承受载荷的监测。 The resin flow process and tensile properties of Bragg gratings in VARTM molding process were studied. The experimental results show that the position of the leading edge of the resin flow can be determined by the wavelength variation with time during the resin flow. When the optical fiber embedded in the direction parallel to the direction of flow of the resin, the optical fiber and composite materials better compatibility. During the stretching process, the change of the grating wavelength shows a good linear relationship with the applied load. Therefore, through the grating wavelength changes can be resin flow process and composite materials to withstand load monitoring.