光纤传感技术在智能材料损伤定位评估中的应用

Application of optical fiber sensing technology for positioning and evaluating damage in smart materials and structures

传感技术是智能材料结构主要应用的技术之一。智能材料结构中的光纤传感网络分布范围大,传感网络输出信号可以是大面积的分布信号,也可以是数十甚至成千上万个离散的信号,且常常呈非线性。应用光纤传感神经网络的方法对智能型材料损伤定位进行分析研究,可以解决以上实时监控的问题。通过实验,结果表明神经网络技术进行智能材料的损伤定位,可以提高损伤位置的识别率。

Sensing technology is one of the most important technology in smart materials structures. In the intelligent material structure optical fiber sensing network distributed scope is big, the sensing network output signal may be the big area distributed signal, also may be the dozens of even tens of thousands of separate signals, also assumes the non-linearity frequendy. The optical fiber sensing neural network is applied to locate the impact damage in the smart materials, it could solve the hard problem of real-time monitoring. The results show the neural network technology possesses the advantages such as high approximation accuracy for the position of damage by the experiment.