自诊断是智能结构研究的重要方向。本研究主要采用光纤网络埋入复合材料 ,通过检测光纤传输的光功率变化得到复合材料的使用性能 ,并通过模糊神经网络方法对复合材料上的施力大小和位置作了定量的计算和比较。结果表明 ,这种方法能有效地应用于复合材料的性能诊断 Self-diagnosis is an important direction of intelligent structure research. In this study, the optical fiber network is used to embed the composite material. The optical properties of the composite fiber are measured by measuring the optical power transmitted by the optical fiber. The size and position of the force exerted on the composite material are calculated and compared by the fuzzy neural network method. The results show that this method can be effectively applied to the performance diagnosis of composite materials