摘要
螺栓连接是飞行器复合材料结构最常用的连接方式,由于复合材料螺栓连接结构本身的特点及所受载荷和使用环境的复杂性,复合材料螺栓连接结构的完整性与耐久性分析非常困难。如何有效智能实时监测复合材料螺栓连接结构的服役状态,并在线诊断评估其可靠性、完整性是一项亟须解决与突破的关键技术难题。本文提出并发展了基于柔性涡流传感阵列薄膜和基于碳基纳米压阻传感器的先进碳纤维增强复合材料螺栓连接结构损伤监测技术,系统阐述了其传感监测原理、传感器制备工艺及传感器与螺栓连接结构集成方案,并对所提出的先进传感技术监测功能开展了一系列试验验证,试验结果表明该先进传感技术具有很好的损伤模式辨识能力与损伤参数量化监测能力。
The bolted joint is the most common connection method for composite structures in aircraft.Due to the characteristics of the composite bolted joint itself and the complexity of the load and service environment,it is very difficult to analyze the integrity and durability of the composite bolted joint.It is very challengeable to effectively and intelligently monitor the service condition of composite bolted joints in real time,as well as to diagnose and evaluate their reliability and integrity on-line.In this paper,the damage monitoring technology of advanced carbon fiber reinforced composite bolted joint based on flexible eddy current sensor array film and carbon-based nanopiezoresistive sensor is proposed and developed.The sensor monitoring principle,the sensor preparation process,and the sensor-bolt integration scheme are systematically described.In order to verify the monitoring functions of the proposed advanced sensing techniques,a series of experiments are conducted,and the experimental results show that these advanced sensing techniques have a good ability to identify damage patterns and quantify damage parameters.
作者
卿新林
黄媛
颜佳佳
宋沛强
刘琦牮
孙虎
QING Xinlin;HUANG Yuan;YAN Jiajia;SONG Peiqiang;LIU Qijian;SUN Hu(Xiamen University,Xiamen 361102,China)
出处
《航空制造技术》
CSCD
北大核心
2023年第17期14-25,共12页
Aeronautical Manufacturing Technology
基金
国家自然科学基金(U2141245,11472308,11902280)。
关键词
结构健康监测
复合材料
螺栓连接
涡流传感器
纳米压阻传感器
Structural health monitoring
Composite
Bolted joint
Eddy current sensor
Nanopiezoresistive sensors
