Abstract
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.
Highlights
This paper presents an investigation into the properties of ultrasonic waves actuated and sensed by shear-mode piezoelectric transducers embedded within the bondlines of laminate structures
This paper presents a study into the properties of ultrasonic waves of bondlineanalyses, most of the work was concerned with either conventional d31 piezoelectric wafer active embedded d35 PZT transducers in laminate structures from the individual transducer to a full a sensors (PWAS), d33 PZT interdigitated transducers (IDT), or surface-mounted d35 PZT transducers laminate structure employing analytical methods, finite element analysis, and experimental (SH-PWAS)
This paper presented an investigation into the properties of ultrasonic waves actuated and sensed by d35 PZT piezoelectric transducers internally embedded within the bondline of laminate structures
Summary
This paper presents an investigation into the properties of ultrasonic waves actuated and sensed by shear-mode piezoelectric transducers embedded within the bondlines of laminate structures. This paper presents an investigation into the properties and benefits of shear-mode PZT piezoelectric transducers in sensing and actuation ultrasonic waves while being internally embedded within the bondline of laminate structures. This paper presents a study into the properties of ultrasonic waves of bondlineanalyses, most of the work was concerned with either conventional d31 piezoelectric wafer active embedded d35 PZT transducers in laminate structures from the individual transducer to a full a sensors (PWAS), d33 PZT interdigitated transducers (IDT), or surface-mounted d35 PZT transducers laminate structure employing analytical methods, finite element analysis, and experimental (SH-PWAS).
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