Fiber Bragg grating (FBG) sensors embedded in composite laminates were used to monitor the strain during tension process of the composite laminates and the strain derived from the FBG was compared with the strain gage. It was verified that the effectivity and reliability of the FBG sensors in the process of monitoring composite strain. FBG sensors were embedded in different plys of the laminates, and the tension properties of the composites were studied. The results show a good agreement with the strain gages. The FBG sensors could measure the strain of composites laminates effectively. While the embedded FBG has a little effect on the tensile strength of the composite laminates.%利用内埋在复合材料层间的光纤光栅(Fiber Bragg Grating,FBG)传感器监测复合材料层压板在拉伸过程中的应变变化,并与复合材料层压板试样表面粘贴的应变片测得数据进行对比,同时研究了光纤光栅的埋植位置对复合材料力学性能的影响.探索了FBG传感器在复合材料应变监测中的有效性和可靠性.结果表明:内埋于复合材料层间的FBG传感器可以有效反映复合材料层压板在受到拉伸载荷过程中的应变变化,对比FBG传感器与应变片测得的实验结果,二者所测得的应变变化趋势吻合良好,而且埋植光纤光栅对复合材料层压板的拉伸强度影响较小.
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