金属结构疲劳损伤监测是现代飞机结构健康监控的重点和难点,要求传感器具有高可靠性、高灵敏度并且能在恶劣环境中工作.针对飞机结构损伤监测中传感器的特点,采用阵列化的设计思想设计出一种基于柔性电路板工艺的新型涡流传感器.通过构建损伤监测模型,对传感器的参数进行了仿真优化.最后开展了程序载荷谱下2A12-T4铝合金材料的裂纹监测试验以及阳极氧化和电泳喷漆条件下的对比试验.结果表明,贴附式涡流阵列传感器能够定量监测裂纹的扩展,监测精度达到1mm.阳极氧化和电泳喷漆涂层阻碍了传感器对裂纹特征的有效感知,导致传感器的监测灵敏度降低.%Metal structure fatigue monitoring plays an important role in the modern aircraft structural health monitoring. Sensors are required with high-reliability,high-sensitivity, and stability while working in the severe circumstances. According to the properties of fatigue damage monitoring in aircraft structure as well as the arraying designing thought,a new type of eddy sensor based on flexible printed circuit technology is developed. Parameters of the sensor were simulated with optimization through building damage monitoring model. In this article,the monitoring experiment of 2A12-T4 aluminum alloy and anodic oxidation or electrophoretic-coated material fatigue crack under the programmed spectrum is carried out. The monitoring experiment results implied that the sensor is capable of detecting the fatigue crack extension quantification ally with the precision values 1mm. Anodic oxidation and electrophoretic-coated impeded effective perception of sensors toward crack properties,and the sensitivity has decreased.
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