Hierarchical system for autonomous sensing-healing of delamination in large-scale composite structures
Hierarchical system for autonomous sensing-healing of delamination in large-scale composite structures
复制标题
大型复合材料结构分层自主传感修复的分层系统
DOI：
10.1088/0964-1726/23/11/115014
复制
发表时间：
2014
影响因子：
4.1
通讯作者：
N. Takeda
中科院分区：
文献类型：
--
作者：
S. Minakuchi;D. Sun;N. Takeda
本研究将我们的分层光纤分层检测系统与微血管自愈材料相结合，开发出第一个适用于大规模复合结构的自主感知-愈合系统。在该组合系统中，嵌入式血管模块通过止回阀连接到加压愈合剂的表面安装供应管，而基于光纤的传感器监测这些血管模块的内部压力。当发生分层时，愈合剂流入被分层破坏的血管模块中并渗透损伤以进行愈合。同时，压力传感器通过检测内部压力变化来识别损坏的模块。本文首先描述了组合系统的基本概念，并讨论了其层次性所带来的优势。然后通过分层渗透试验证实了该系统的可行性。最后，通过板试件的损伤检测和渗透，验证了分层系统的有效性。同时也展示了它的自诊断功能。
This study combines our hierarchical fiber-optic-based delamination detection system with a microvascular self-healing material to develop the first autonomous sensing-healing system applicable to large-scale composite structures. In this combined system, embedded vascular modules are connected through check valves to a surface-mounted supply tube of a pressurized healing agent while fiber-optic-based sensors monitor the internal pressure of these vascular modules. When delamination occurs, the healing agent flows into the vascular modules breached by the delamination and infiltrates the damage for healing. At the same time, the pressure sensors identify the damaged modules by detecting internal pressure changes. This paper begins by describing the basic concept of the combined system and by discussing the advantages that arise from its hierarchical nature. The feasibility of the system is then confirmed through delamination infiltration tests. Finally, the hierarchical system is validated in a plate specimen by focusing on the detection and infiltration of the damage. Its self-diagnostic function is also demonstrated.