Assessment of embedded fiber Bragg gratings for structural health monitoring of composites
Assessment of embedded fiber Bragg gratings for structural health monitoring of composites
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DOI：
10.1177/1475921716665563
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发表时间：
2017-05-01
影响因子：
6.6
通讯作者：
Key, Chris
中科院分区：
文献类型：
--
作者：
Yeager, Mike;Todd, Michael;Key, Chris
这项工作提供了一个系统级的调查使用嵌入式光纤光栅光学传感器作为一个可行的传感体系结构的复合材料结构的结构健康监测。对于通过烘箱真空袋和真空辅助树脂转移方法工艺制造的碳纤维增强聚合物和玻璃纤维增强聚合物结构，记录了嵌入工艺的实际方面。最初，嵌入的标本进行长期的水淹没，以验证在水下环境中的性能。一个更大的，更复杂的连接试样也制作了一个完全嵌入式传感器网络的光纤布拉格光栅和增量诱导轴承损坏。使用商用询问硬件，损伤检测结构健康监测算法的开发和部署。结果允许在复合材料试样中的低水平的连接损坏的统计上精确的检测。
This work provides a system-level investigation into the use of embedded fiber Bragg grating optical sensors as a viable sensing architecture for the structural health monitoring of composite structures. The practical aspects of the embedding process are documented for both carbon fiber-reinforced polymer and glass fiber-reinforced polymer structures manufactured by both oven vacuum bag and vacuum-assisted resin transfer method processes. Initially, embedded specimens were subject to long-term water submersion to verify performance in an underwater environment. A larger, more complex jointed specimen was also fabricated with a fully embedded sensor network of fiber Bragg gratings and subjected to incrementally induced bearing damage. Using commercially available interrogation hardware, a damage detection structural health monitoring algorithm was developed and deployed. The results permit statistically precise detection of low levels of connection damage in the composite specimen.