Novel multi-layer-composites design for ultrasonic transducer applications

Peng, Lin; Zhang, Lin; Fei, Chunlong; Li, Di; Wu, Ruizhi; Chen, Qiang; Hou, Chenxue; Yang, Yanchao

doi:10.1016/j.compstruct.2020.112364

Cited by 20 publications

(12 citation statements)

References 24 publications

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“… Efficient optimization design software should be developed by integrating the predictive models and intelligent optimization algorithms. Most optimization design methods are developed for a low-frequency PUT [ 28 , 36 , 37 , 40 , 46 ], therefore, an efficient optimization design method for a high-frequency PUT should be proposed and developed in the future. …”

Section: Discussionmentioning

confidence: 99%

“…Most optimization design methods are developed for a low-frequency PUT [ 28 , 36 , 37 , 40 , 46 ], therefore, an efficient optimization design method for a high-frequency PUT should be proposed and developed in the future.…”

Section: Discussionmentioning

confidence: 99%

“…To realize an ultra-high frequency system, Li et al [ 39 ] designed a tightly focused 500 MHz PUT by a FEM (shown in Figure 5 C). In order to meet the requirement of a high-quality sensor, Lin et al [ 40 ] proposed a 5 MHz piezocomposite ultrasonic transducer based on the finite element analysis software PZFlex (Weidlinger Associates, Cupertino, USA), as shown in Figure 5 D, and found that the piezocomposite ultrasonic transducer had a wider bandwidth (40.6 %) and a higher peak voltage (18 mv) than the PUT fabricated by PZT. In addition, Liu et al [ 41 ] designed a PUT with two piezoelectric layers (PMNT and PZT materials) by using PZFlex.…”

Section: Traditional Optimization Design Methods For a Putmentioning

confidence: 99%

“… ( A ) Radiation pattern diagrams of graded ultrasonic transducer, impedance, and pulse echo diagrams of conventional and graded ultrasonic transducers (reproduced from [ 37 ]); ( B ) ANSYS (Ansys Inc., Canonsburg, PA, USA) simulation results of impedance and vibration displacement (reproduced from [ 37 ]); ( C ) simulated pulse-echo waveform, spectrum, and schematic diagram of a focused high-frequency piezoelectric ultrasonic transducer (reproduced from [ 38 ]); ( D ) physical diagrams of different types of piezoelectric ultrasonic transducers and simulated radiation patterns (reproduced from [ 39 ]); ( E ) simulated acoustic field, the impulse echo response of a conventional ultrasonic transducer, and a double piezoelectric layer ultrasonic transducer with PMNT + PZT (reproduced from [ 40 ]); ( F ) impulse response of a piezoelectric ultrasonic transducer obtained by the KLM model (reproduced from [ 41 ]). …”

Section: Figurementioning

confidence: 99%

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Recent Development and Perspectives of Optimization Design Methods for Piezoelectric Ultrasonic Transducers

et al. 2021

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A piezoelectric ultrasonic transducer (PUT) is widely used in nondestructive testing, medical imaging, and particle manipulation, etc., and the performance of the PUT determines its functional performance and effectiveness in these applications. The optimization design method of a PUT is very important for the fabrication of a high-performance PUT. In this paper, traditional and efficient optimization design methods for a PUT are presented. The traditional optimization design methods are mainly based on an analytical model, an equivalent circuit model, or a finite element model and the design parameters are adjusted by a trial-and-error method, which relies on the experience of experts and has a relatively low efficiency. Recently, by combining intelligent optimization algorithms, efficient optimization design methods for a PUT have been developed based on a traditional model or a data-driven model, which can effectively improve the design efficiency of a PUT and reduce its development cycle and cost. The advantages and disadvantages of the presented methods are compared and discussed. Finally, the optimization design methods for PUT are concluded, and their future perspectives are discussed.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Traditional Optimization Design Methods For a Putmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Recent Development and Perspectives of Optimization Design Methods for Piezoelectric Ultrasonic Transducers

et al. 2021

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“…To optimize the geometry of the soft PZT elements, we performed a 2D FE simulation using the software PZFlex [25,26] based on the coupled piezoelectric-vibration analysis. The parameters of the soft PZT C9 used in the FE simulation are presented in Table 2.…”

Section: Piezoelectricmentioning

confidence: 99%

Development of Low-Frequency Phased Array for Imaging Defects in Concrete Structures

Ohara

Kikuchi

Tsuji

et al. 2021

Sensors

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The nondestructive inspection of concrete structures is indispensable for ensuring the safety and reliability of aging infrastructures. Ultrasonic waves having a frequency of tens of kHz are frequently used to reduce the scattering attenuation due to coarse aggregates. Such low frequencies enable the measurement of the thickness of concrete structures and detection of layer-type defects, such as delamination, whereas it causes a lack of sensitivity to crack-type defects. In this paper, to realize the ultrasonic phased array (PA) imaging of crack-type defects, we fabricated a low-frequency (LF) array transducer with a center frequency of hundreds of kHz. To avoid the crosstalk between piezoelectric elements and dampen the vibration of each element, we adopted soft lead zirconate titanate (soft PZT) with a low mechanical quality factor. Subsequently, we optimized the geometry of each piezoelectric element using a finite element method to generate a short pulse. After validating the design in a fundamental experiment using a single-element transducer, we fabricated a 32-element array transducer with a center frequency of 350 kHz. To show the imaging capability of the LF array transducer, we applied it to a concrete specimen with a delamination. As a result, the PA with the LF array transducer clearly visualized the delamination, which could not be visualized using the PA with a 2.5 MHz array transducer. Furthermore, we applied it to a more challenging defect, a slit, which is sometimes used to simulate crack-type defects. As a result, the PA with the LF array transducer clearly visualized a slit of 1 mm width and 40 mm height in a concrete specimen. Thus, we demonstrated the usefulness of the LF array transducer for inspecting crack-type defects.

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An Emerging Era: Conformable Ultrasound Electronics

Zhang,

Du,

Kim

et al. 2023

Advanced Materials

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Conformable electronics are regarded as the next generation of personal healthcare monitoring and remote diagnosis devices. In recent years, piezoelectric based conformable ultrasound electronics (cUSE) have been intensively studied due to their unique capabilities, including no‐radiative monitoring, soft tissue imaging, deep signal decoding, wireless power transfer, portability, and compatibility. This review provides a comprehensive understanding of cUSE for use in biomedical and healthcare monitoring systems and a summary of their recent advancements. Following an introduction to the fundamentals of piezoelectrics and ultrasound transducers, the critical parameters for transducer design are discussed. Next, five types of cUSE with their advantages and limitations are highlighted, and the fabrication of cUSE using advanced technologies is discussed. In addition, the working function, acoustic performance, and accomplishments in various applications are thoroughly summarized. We note that application considerations must be given to the tradeoffs between material selection, manufacturing processes, acoustic performance, mechanical integrity, and the entire integrated system. Finally, we highlight current challenges and directions for the development of cUSE, and provide research flow as the roadmap for future research. In conclusion, these advances in the fields of piezoelectric materials, ultrasound transducers, and conformable electronics spark an emerging era of biomedicine and personal healthcare.This article is protected by copyright. All rights reserved

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Novel multi-layer-composites design for ultrasonic transducer applications

Cited by 20 publications

References 24 publications

Recent Development and Perspectives of Optimization Design Methods for Piezoelectric Ultrasonic Transducers

Recent Development and Perspectives of Optimization Design Methods for Piezoelectric Ultrasonic Transducers

Development of Low-Frequency Phased Array for Imaging Defects in Concrete Structures

An Emerging Era: Conformable Ultrasound Electronics

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