基于多传感器技术的缺陷碳纤维增强聚合物复合材料的结构健康监测
Wuyi Li1, Heng Huang2, Boli Wan2
1College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
Sensors (Basel, Switzerland)
|September 13, 2025
概括
这项研究引入了一种新的多传感器方法,使用纤维支格子 (FBG) 传感器和张力计来监测碳纤维增强聚合物 (CFRP) 复合材料中的材料损失缺陷,提高结构可靠性.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 结构健康监测 结构健康监测
背景情况:
- 碳纤维增强聚合物 (CFRP) 复合材料在使用过程中容易出现材料损失缺陷,损害机械性能和结构完整性.
- 有效监测这些缺陷对于确保CFRP结构的可靠性至关重要.
研究的目的:
- 提出和验证一种多传感器同步监测方法,用于检测和跟踪CFRP层材中的材料损失缺陷.
- 通过有限元模拟来研究损伤演变机制,并优化传感器放置.
主要方法:
- 使用3D Hashin损伤标准来模拟缺陷启动和传播的有限元模拟.
- 根据ASTM D3039标准对具有预制缺陷的CFRP拉伸样本进行实验测试.
- 从嵌入式纤维支格 (FBG) 传感器和表面安装的电阻应变仪中同步获取数据.
主要成果:
- 模拟显示了完整的损伤演变机制,并告知了最佳传感器放置.
- 实验数据证实,嵌入式FBG传感器和表面张力计有效监测局部材料损失缺陷.
- 有缺陷的标本在缺陷附近表现出显著的菌株再分配,与具有均菌株分布的完整标本不同.
结论:
- 综合多传感器方法准确可靠地跟踪有缺陷的CFRP层材中的损伤演变.
- 这种方法为监测CFRP复合材料的结构健康提供了强大的解决方案.
- 这些发现有助于提高CFRP结构在关键应用中的安全性和寿命.
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