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Experimental and theoretical study of vibrations of a cantilevered beam using a ZnO piezoelectric sensor

机译:ZnO压电传感器对悬臂梁振动的实验和理论研究

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摘要

Piezoelectric sensors can measure vibrations of solid structures very accurately. A model of a cantilevered beam, with a ZnO film on one side is presented. Both viscous and internal damping are considered. The output of the sensor is modeled and matched with experimental results by adjusting the damping parameters. A theoretical formulation for damage is introduced. Experimental results for a damaged beam confirm the shift in frequencies to lower values. The model is used to identify the extent of the damage.
机译:压电传感器可以非常精确地测量固体结构的振动。提出了一种悬臂梁的模型,在其一侧有ZnO膜。同时考虑了粘性阻尼和内部阻尼。通过调整阻尼参数,对传感器的输出进行建模并与实验结果相匹配。介绍了破坏的理论表述。光束损坏的实验结果证实了频率向较低值的偏移。该模型用于识别损坏程度。

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