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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Ultrasonic Sensing and Actuation in Laminate Structures Using Bondline-Embedded d35 Piezoelectric Sensors
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Ultrasonic Sensing and Actuation in Laminate Structures Using Bondline-Embedded d35 Piezoelectric Sensors

机译：使用键合线嵌入式d35压电传感器的层压结构中的超声传感和驱动

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Ultrasonic systems employing embedded piezoelectric transducers have seen increased interest in recent years. The ability to sense, actuate, and analyze the wave propagation modes in engineering structures has been fundamental to the advancement of ultrasonic structural health monitoring (SHM). This paper presents a study into the sensing and actuation properties of shear-mode (d35) piezoelectric transducers made of lead zirconate titanate (PZT) that are internally embedded in the bondline of laminate structures. The manuscript presents analytical analysis, finite element simulation, and experimental validation building from an individual piezoelectric element to a full laminate structure. The validated model was then used to perform a parametric study into the effects of d35 PZT transducer size on the strength of actuation and sensing output signal. The selectivity of d35 PZT sensors was also investigated by generating multiple wave modes in the laminate structure and inspecting the output signals. The d35 PZT sensors were found to selectively detect only certain modes of the wave propagation providing a fundamental hardware filter that could be employed to simplify signal analysis and processing. The results of this study indicate that d35 PZTs embedded in the bondline have multiple properties that can potentially be employed for ultrasonic SHM.
机译：近年来，采用嵌入式压电换能器的超声系统引起了越来越多的兴趣。感测，激活和分析工程结构中的波传播模式的能力已成为超声结构健康监测（SHM）进步的基础。本文提出了对锆钛酸铅（PZT）制成的剪切模式（d35）压电换能器的传感和驱动特性的研究，该压电换能器内部嵌入层压结构的粘结层中。该手稿提供了从单个压电元件到完整层压结构的分析分析，有限元模拟和实验验证。然后，将经过验证的模型用于对d35 PZT换能器尺寸对驱动和感应输出信号强度的影响进行参数研究。 d35 PZT传感器的选择性还通过在层状结构中生成多个波模并检查输出信号进行了研究。发现d35 PZT传感器仅选择性地检测波传播的某些模式，提供了可用于简化信号分析和处理的基本硬件滤波器。这项研究的结果表明，嵌入键合线中的d35 PZT具有多种特性，可潜在地用于超声SHM。

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