复合材料连接结构损伤探测技术与服役状态表征理论

项目名称： 复合材料连接结构损伤探测技术与服役状态表征理论

项目编号： No.11472308

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 卿新林

作者单位： 厦门大学

项目金额： 88万元

中文摘要： 复合材料正在成为新一代民机的主要结构材料，如何探测复合材料主承力结构的损伤，并评价其对结构失效的影响是重要但富有挑战性的课题。本项目提出并建立以多场耦合传感网络智能探测技术为基础的复合材料连接结构全寿命健康管理方法与理论，发展复合材料连接结构从设计、制造、服役到维护的全寿命周期损伤探测关键技术。主要创新点包括：提出具有多场探测能力的复合材料智能连接结构概念；研究复合材料各向异性的电磁 特性，揭示电磁涡流传感信号与结构状态及损伤之间的相关性；提出集电磁涡流传感薄膜、压电传感器阵列以及用于雷击电流检测的Rogowski线圈为一体的多场耦合传感网络技术，用于复合材料连接结构状态和损伤的智能探测；面向全寿命健康管理，提出复合材料连接结构健康监测与寿命预测模型的协同分析技术，实现连接结构的剩余强度和寿命预测。研究成果为快速评价复合材料连接结构的完整性提供理论基础和技术手段。

中文关键词： 结构健康监测；复合材料；损伤探测；连接结构；传感器网络

英文摘要： Composite materials are being widely used as structural materials of the new generation of aircraft. How to monitor the damage in critical composite structures and evaluate its impact on the structure failure of aircraft is a very important but challenging topic. This project proposes a multi-field coupled sensing network based life cycle health management method for composite joint structures, and develops the key technologies for life cycle damage detection of composite joints from design, manufacturing, usage to maintenance. Major novelties of this project include: 1) A new concept of smart composite joint with multi-field detection capability; 2) Study of the anisotropic electromagnetic properties of the composite material to reveal the correlation between an electromagnetic eddy current sensor signal and the structural state, as well as damages; 3) A multi-field coupling hybrid sensor network integrated with electromagnetic eddy sensing film, arrayed piezoelectric sensors and Rogowski coil for lightning detection to detect the state and damage of composite joints; 4) Collaborative analysis techniques based on health monitoring results and fatigue failure prediction for a life cycle health management of composite joints. Research results have important practical significance to ensure the safety and reliability of aircraft composite joints.

英文关键词： Structural Health Monitoring;Composite;Damage detection;Joint;Sensor network