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An investigation into the performance of macro-fiber composites for sensing and structural vibration applications

机译：宏观纤维复合材料在传感和结构振动应用中的性能研究

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This paper presents the use of macro-fiber composites (MFC) for vibration suppression and structural health monitoring. The major advantages of the piezoelectric fiber composite actuators are their high performance, flexibility, and durability when compared with the traditional piezoceramic (PZT) actuators. The recently developed MFC actuator provides these advantages and can be used in structural vibration applications. In addition, the ability of MFC devices to couple the electrical and mechanical fields is larger than in monolithic PZT. In this study, we showed that an MFC could be used as a sensor and actuator to find modal parameters of an inflatable structure. This sensor and actuator combination has also been used to reduce vibration in an inflated object. Once the sensing capability was identified, we developed a self-sensing circuit for an MFC. Our experimental results clearly indicate that this strategy can suppress structural vibration, while reducing the number of system components. Finally, the MFC has been implemented as impedance sensor for structural health monitoring (e.g. a of bolted joint connection). The experimental results presented in this paper show the potential of MFC for use in the dynamics and control of flexible structures.
机译：本文介绍了使用大纤维复合材料（MFC）进行振动抑制和结构健康监测的方法。与传统的压电陶瓷（PZT）执行器相比，压电纤维复合执行器的主要优点是其高性能，灵活性和耐用性。最近开发的MFC执行器具有这些优点，可用于结构振动应用中。另外，MFC装置耦合电场和机械场的能力比单片PZT大。在这项研究中，我们表明MFC可以用作传感器和执行器来查找可充气结构的模态参数。这种传感器和执行器的组合也已被用来减少充气物体的振动。一旦确定了感应能力，我们就为MFC开发了一种自感应电路。我们的实验结果清楚地表明，该策略可以抑制结构振动，同时减少系统组件的数量。最后，MFC已被实现为用于结构健康监测的阻抗传感器（例如，螺栓连接）。本文介绍的实验结果表明了MFC在柔性结构的动力学和控制中的潜力。

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