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Journal articles on the topic 'Transducers'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Liu, Wenzhao, Xiping Mo, Yong Chai, Tong Wu, and Rui Pan. "A distributed parameter model of the Janus–Helmholtz transducer." Journal of the Acoustical Society of America 155, no. 1 (2024): 681–94. http://dx.doi.org/10.1121/10.0024468.

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The Janus–Helmholtz (JH) transducer is a low-frequency, high-power, broadband underwater transducer type. Numerous studies have shown the effectiveness of the finite element method (FEM) in designing JH transducers and predicting their electroacoustic performance. However, a precise theoretical model for JH transducers has not yet been proposed, and the modal identification problem of JH transducers remains unsolved. In this paper, a distributed parameter model (DPM) of the JH transducer is proposed, which consists of the DPM of a Janus transducer and the DPM of a cylindrical liquid cavity und

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2

Hegazy, Riham, Gouda Mohammad, and Magdy Ibrahim Mohamed. "Extrapolation errors of force transducer curve fitting equations." Universitas Scientiarum 27, no. 3 (2022): 315–31. http://dx.doi.org/10.11144/javeriana.sc273.eeof.

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Calibration laboratories often face the challenge of the impossibility to perform full capacity range calibration of their force transducers, particularly below 10 % of the force transducer’s capacity. Sometimes these laboratories use curve fitting extrapolation to estimate and predict force transducer behavior within uncalibrated capacity ranges. This work deals with the study of extrapolation errors in force transducers to know and estimate prediction accuracies when using extrapolation for force transducer calibration in ranges below 10 % and between 50 % and 100 % of the transducer’s capac

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3

Yang, Qing Feng, Peng Wang, Yu Hong Wang, and Kai Zhang. "Simulation Analysis on Cymbal Transducer." Advanced Engineering Forum 2-3 (December 2011): 140–43. http://dx.doi.org/10.4028/www.scientific.net/aef.2-3.140.

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The resonance frequency of the cymbal transducer ranges from 2kHz to 40kHz and its effective electromechanical coupling factor is around 20%. Finite element analysis has been performed to ascertain how the transducer’s makeup affect the transducer’s performance parameters. Two-dimensional axisymmetric model of the cymbal transducer was founded by finite element software-ANSYS, the application of the element type was discussed and the FEM models were built up under the far field condition. Eight groups of cymbal transducers of resonance frequency around 3kHz with different structural dimensions

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4

Nguyen, Thanh Phuoc, Jaeyeop Choi, Van Tu Nguyen, et al. "Design and Micro-Fabrication of Focused High-Frequency Needle Transducers for Medical Imaging." Sensors 22, no. 10 (2022): 3763. http://dx.doi.org/10.3390/s22103763.

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In this study, we report an advanced fabrication technique to develop a miniature focused needle transducer. Two different types of high-frequency (100 MHz) transducers were fabricated using the lead magnesium niobate-lead titanate (PMN-0.3PT) and lithium niobate (LiNbO3) single crystals. In order to enhance the transducer’s performance, a unique mass–spring matching layer technique was adopted, in which gold and parylene play the roles of the mass layer and spring layer, respectively. The PMN-0.3PT transducer had a 103 MHz center frequency with a −6 dB bandwidth of 52%, and a signal-to-noise

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Sang, Yongjie, Yishuang Zhang, and Qingzhe Li. "External airbag-type deepwater electrodynamic transducer." Journal of the Acoustical Society of America 155, no. 2 (2024): 1546–58. http://dx.doi.org/10.1121/10.0024977.

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An external airbag-type electrodynamic transducer structure was proposed to solve the problems of traditional electrodynamic transducers, such as limited operating depth, failure to work for a long time, and excessive buoyancy change. The driving vibrator of the transducer was placed in the oil-filled cavity to balance the hydrostatic pressure and increase the heat dissipation channel of the coil. The external sound insulation airbag was used to eliminate the dipole's acoustic radiation mode to improve the transducer's acoustic radiation ability. This study analyzed the acoustic radiation perf

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6

Subash Chandrabose M.R. and Biju N. "Parametric Studies of a Low-Frequency Underwater Transducer." Defence Science Journal 75, no. 4 (2025): 498–503. https://doi.org/10.14429/dsj.20427.

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Low-frequency active transducers are essential for applications like active sonar, underwater communications, oceanographic studies, and underwater acoustic measurements. Different transducers, including free flooded rings, flextensional, flexural disks, Janus Helmholtz, and Janus Hammer Bell (JHB), are employed as low-frequency transducers. The JHB transducer features a double-headed Tonpilz transducer, known as a Janus driver, housed within a cylindrical structure. This transducer exhibits two resonances corresponding to the Janus driver’s length mode resonance and the cylindrical housing’s

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7

ZHANG Xiuzhen, MO Xiping, CHAI Yong, PAN Rui, and TIAN Zhifeng. "Research on low-frequency directional flextensional transducer with concave-convex beam." Acta Physica Sinica 74, no. 11 (2025): 0. https://doi.org/10.7498/aps.74.20250161.

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The dimensions of flextensional transducers are much smaller than the wavelength, thereby constraining the generation of directional beams by compact underwater acoustic transducers. To address the complexity of amplitude and phase modulation in circuit-driven traditional directional flextensional transducers, this study proposes a directional flextensional transducer structure. By implementing an asymmetric composite shell configuration combining concave and convex curved beams, the design achieves low-frequency directional radiation while simplifying peripheral driving circuits, thereby offe

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8

Fa, Lin, Dongning Liu, Hong Gong, et al. "A Frequency-Dependent Dynamic Electric–Mechanical Network for Thin-Wafer Piezoelectric Transducers Polarized in the Thickness Direction: Physical Model and Experimental Confirmation." Micromachines 14, no. 8 (2023): 1641. http://dx.doi.org/10.3390/mi14081641.

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This paper is concerned with electric–acoustic/acoustic–electric conversions of thin-wafer piezoelectric transducers polarized in the thickness direction. By introducing two mechanical components with frequency-dependent values, i.e., radiation resistance and radiation mass, into the equivalent circuit of the thin-wafer piezoelectric transducer, we established a frequency-dependent dynamic mechanic-electric equivalent network with four terminals for an arbitrary given frequency, an enhancement from the conventional circuit networks. We derived the analytic expressions of its electric–acoustic

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9

Geng, Jie, Quan Lu Li, Jing Wu, Qing Qing Yang, and Hai Xia Chen. "The Performance and Material Selection of Medical Ultrasonic Transducer." Advanced Materials Research 340 (September 2011): 456–60. http://dx.doi.org/10.4028/www.scientific.net/amr.340.456.

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With the accelerating pace of mordern medicine, the various transducers that applicat in clinical diagnosis are also more and more, most medical ultrasonic transducer using acoustoelectric transducer to emiting and receiving of ultrasonic wave. However, the selection of transducer’s material is very important to the performance of medical ultrasonic transducer. This paper describes structures and properties of the medical ultrasonic transducer, and a variety of quantitative indicators that influence its performance. Aim to work out the most appropriate material for making the medical ultrasoni

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10

Klaus, Leonard, Barbora Arendacká, Michael Kobusch, and Thomas Bruns. "Dynamic torque calibration by means of model parameter identification." ACTA IMEKO 4, no. 2 (2015): 39. http://dx.doi.org/10.21014/acta_imeko.v4i2.211.

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For the dynamic calibration of torque transducers, a model of the transducer and an extended model of the mounted transducer including the measuring device have been developed. The dynamic behaviour of a torque transducer under test is going to be described by its model parameters. This paper describes the models with these known and unknown parameters and how the calibration measurements are going to be carried out. The principle for the identification of the transducer's model parameters from measurement data is described using a least squares approach. The influence of a variation of the tr

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11

Pan, Jingxi. "Performance Analysis and Prospect of Piezoelectric Ultrasonic Transducers Based on Vibration Modes." Academic Journal of Science and Technology 6, no. 1 (2023): 40–44. http://dx.doi.org/10.54097/ajst.v6i1.8280.

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With the maturity of ultrasonic transducer technology, as a traditional ultrasonic transducer, piezoelectric ultrasonic transducer has leaped into the public view. This article briefly summarizes the development of ultrasonic transducers and the classification of piezoelectric ultrasonic transducers. In practical applications, different piezoelectric ultrasonic transducers are mostly selected based on the different sound source vibrations in the application scenarios. The principle analysis and structure introduction of longitudinal vibration type ultrasonic transducers, longitudinal bending v

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12

Kong, Huan Ping, Zheng Zhang, and Li Fei Li. "Factors Influencing Acousto-Ultrasonic Approach to Impact Damage in Composite Materials." Advanced Materials Research 393-395 (November 2011): 97–101. http://dx.doi.org/10.4028/www.scientific.net/amr.393-395.97.

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This paper studied factors influencing AU detection results on different damage specimens, including simulation frequency, transducer modes and transducer location. Correlation between acousto-ultrasonic parameters (AUP1, AUP2) and impact damage severity in composite was investigated. The results showed that as damage severity increased, AUP1 and AUP2 of three different transducers decreased. Applying low frequency transducer, the variation of AUP1 may indicate a more rapid detection prospect. In addition, applying S1-transducer and WD-transducer, AUP2 was more effective for the early damage d

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13

Wolterink, Tom A. W., Robin D. Buijs, Giampiero Gerini, A. Femius Koenderink, and Ewold Verhagen. "Localizing nanoscale objects using nanophotonic near-field transducers." Nanophotonics 10, no. 6 (2021): 1723–32. http://dx.doi.org/10.1515/nanoph-2020-0669.

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Abstract We study how nanophotonic structures can be used for determining the position of a nearby nanoscale object with subwavelength accuracy. Through perturbing the near-field environment of a metasurface transducer consisting of nano-apertures in a metallic film, the location of the nanoscale object is transduced into the transducer’s far-field optical response. By monitoring the scattering pattern of the nanophotonic near-field transducer and comparing it to measured reference data, we demonstrate the two-dimensional localization of the object accurate to 24 nm across an area of 2 × 2 μm.

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14

M R, Subash Chandrabose, Shan Victor Pereira, Jayakumar B, and Ebenezer D. D. "Metal Ceramic Segmented Ring Transducer under Deep Submergence Conditions." Defence Science Journal 67, no. 6 (2017): 612. http://dx.doi.org/10.14429/dsj.67.11201.

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<p class="p1">Segmented ring transducers are widely used for low frequency, broadband, deep submergence applications. These transducers can be made out of piezoceramic wedges or slabs and metallic wedges. Higher diameter, low frequency transducers are generally made out of piezoceramic slabs and metal wedges due to ease of manufacture and low cost. In this paper, metal ceramic segmented ring transducers are modelled using ATILA, a finite element software for the design of underwater transducers. Transducer variants were modelled with different wedge and piezoceramic materials. Transducer

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15

Li, Cong. "Road Performance of Common Piezoelectric Transducer for Asphalt Pavement Energy Harvesting." Applied Mechanics and Materials 744-746 (March 2015): 1491–94. http://dx.doi.org/10.4028/www.scientific.net/amm.744-746.1491.

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The discussion in the paper is focused on energy transition efficiency, stiffness and intensity of common piezoelectric transducers in the following aspects. Firstly, we have found out that bridge piezoelectric transducers possess high energy transition efficiency and the similar stiffness to asphalt pavement through comparing and analyzing road performance of several common piezoelectric transducers. Thus, we hold the view that it is applicable for energy collection of asphalt pavement and will be analyzed subsequently. Secondly, we have analyzed energy transition efficiency and stiffness cha

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16

Duan, Weiping, Yuxiang Zhang, Shihao Liu, Qian Shen, Zhiwei Hou, and Renwen Chen. "Design and Modeling of Coreless Magnetoelectric Transducers for Snake-like Wave Energy Converters." Electronics 13, no. 20 (2024): 4092. http://dx.doi.org/10.3390/electronics13204092.

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With the development of the economy, people’s demand for energy is increasing, which has led to a shortage of fossil fuels. Wave energy is a widely distributed renewable energy source, and the development of wave energy generation technology can greatly alleviate the energy shortage problem. This study takes the snake-like wave energy converter (WEC) as an example and designs a coreless magnetoelectric transducer for it. The structure of the coreless magnetoelectric transducer is relatively simple, eliminating the iron core in the transducer, which can eliminate its own damping. At the same ti

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17

LIN, Jiyan, Yao LI, Cheng CHEN, et al. "Research on surface and defect controlled high power piezoelectric ultrasonic transducers." Acta Physica Sinica 74, no. 9 (2025): 094301. https://doi.org/10.7498/aps.74.20250047.

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<sec>Researches have shown that a reasonably designed phononic crystal defect structure in high-power piezoelectric ultrasonic transducers can effectively suppress stray vibration modes. However, when the size of the transducer is large, the improvement of the displacement amplitude of the radiation surface of the transducer device by the phononic crystal defect structure is still not so ideal. How to effectively suppress harmful vibrations while ensuring the operational efficiency of transducers and enhancing the displacement amplitude of their radiating surfaces has always been a chall

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18

Pyun, Joo Young, Young Hun Kim, and Kwan Kyu Park. "Design of Piezoelectric Acoustic Transducers for Underwater Applications." Sensors 23, no. 4 (2023): 1821. http://dx.doi.org/10.3390/s23041821.

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Interest in underwater transducers has persisted since the mid-1900s. Underwater transducers are designed in various shapes using various materials depending on the purpose of use, such as to achieve high power, improve broadband, and enhance beam steering. Therefore, in this study, an analysis is conducted according to the structural shape of the transducer, exterior material, and active material. By classifying transducers by structure, the transducer design trends and possible design issues can be identified. Researchers have constantly attempted new methods to improve the performance of tr

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19

Mosland, Eivind N., Jan Kocbach, and Per Lunde. "Errors using the spatially averaged free-field pressure approximation for description of the receiving properties of piezoelectric transducers." Journal of the Acoustical Society of America 152, no. 4 (2022): A227. http://dx.doi.org/10.1121/10.0016092.

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In modelling of ultrasonic measurement systems and calculation of diffraction corrections for such systems, it is often assumed that the spatially averaged free-field pressure over the front surface of a piezoelectric transducer, ⟨ p⟩, can be used to calculate its voltage output. It is of interest to investigate whether errors due to this ⟨ p⟩-approximation are acceptable for piezoelectric transducers applied in high-precision ultrasonic measurements in fluids. 3D-axisymmetric finite element (FE) modelling is used to investigate such errors in a transmit-receive measurement setup employing two

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20

Klaus, Leonard. "Model parameter identification from measurement data for dynamic torque calibration – Measurement results and validation." ACTA IMEKO 5, no. 3 (2016): 55. http://dx.doi.org/10.21014/acta_imeko.v5i3.318.

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<p><span lang="EN-US">The dynamic calibration of torque transducers requires the </span><span lang="EN-GB">modelling</span><span lang="EN-US"> of the measuring device and of the transducer under test. The transducer's dynamic properties are described by means of model parameters, which are going to be identified from measurement data. To be able to do so, two transfer functions are calculated. In this paper, the transfer functions and the procedure for the model parameter identification are presented. Results of a parameter identification of a torque transdu

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21

Zhu, Ke, Jinpeng Ma, Yang Liu, et al. "Increasing Performances of 1–3 Piezocomposite Ultrasonic Transducer by Alternating Current Poling Method." Micromachines 13, no. 10 (2022): 1715. http://dx.doi.org/10.3390/mi13101715.

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Ultrasonic transducers are the basic core component of diagnostic imaging devices, wherein the piezoelectric materials are the active element of transducers. Recent studies showed that the alternating current poling (ACP) method could develop the properties of piezocomposites, which had great potential to improve transducer performance. Herein, transducers (fc = 3 MHz) made of DCP and ACP 1–3 piezocomposites (prepared by PZT-5H ceramics and PMN-PT single crystals) were fabricated. The effect of the ACP method on the bandwidth and insertion loss (sensitivity) was explored. The results indicate

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22

Wang, Yulei, Jingya Tao, Feifei Guo, et al. "Magnesium Alloy Matching Layer for High-Performance Transducer Applications." Sensors 18, no. 12 (2018): 4424. http://dx.doi.org/10.3390/s18124424.

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In this paper, we report the use of magnesium alloy (AZ31B) as the matching material for PZT-5H ultrasonic transducers. The AZ31B has an acoustic impedance of 10.3 MRayl, which provides a good acoustic impedance match for PZT-5H ultrasonic transducers in water medium based on the double matching layer theory. Two PZT-5H transducers with different center frequencies were designed and fabricated using the AZ31B. The respective center frequencies of the two fabricated transducers were 4.6 MHz and 9.25 MHz. The 4.6 MHz transducer exhibits a −6 dB bandwidth of 79% and two-way insertion loss of −11.

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23

Wang, Ying. "Simulation study on acoustic performance of Tonpilz piezoelectric transducers." Journal of Physics: Conference Series 2814, no. 1 (2024): 012044. http://dx.doi.org/10.1088/1742-6596/2814/1/012044.

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Abstract The Tonpilz configuration of transducers is recognized for its capability to generate high-power acoustic emissions at relatively lower frequencies, which is a prevalent setup in sonar systems. Comprising a frontal radiating element, a rear casing, and a piezoelectric ceramic ring sandwiched between them and affixed by a central bolt, this study delineates the inclusion of bolt pretension impact. The investigation assesses the structural and acoustic ramifications of the transducer’s frequency response. These findings indicate the commendable acoustic performance of the transducer.

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Sherar, M. D., and F. S. Foster. "The Design and Fabrication of High Frequency Poly(Vinylidene Fluoride) Transducers." Ultrasonic Imaging 11, no. 2 (1989): 75–94. http://dx.doi.org/10.1177/016173468901100201.

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Poly(vinylidene fluoride) (PVDF) transducers are well suited for use in high frequency pulse-echo ultrasound systems because of their high bandwidth. We analyze the design parameters of PVDF transducers operating in the 100 MHz range using the KLM transducer model. The effect of backing layers, electrode configuration, transducer surface area and tuning circuits on the insertion loss and pulse-echo response of the transducers are investigated. Using this design procedure, an experimental PVDF transducer is proposed for applications in the 100 MHz range. The transducer is built into a high freq

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Choi, Hojong. "Pre-Matching Circuit for High-Frequency Ultrasound Transducers." Sensors 22, no. 22 (2022): 8861. http://dx.doi.org/10.3390/s22228861.

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High-frequency ultrasound transducers offer higher spatial resolution than low-frequency ultrasound transducers; however, their maximum sensitivity are lower. Matching circuits are commonly utilized to increase the amplitude of high-frequency ultrasound transducers because the size of the piezoelectric material decreases as the operating frequency of the transducer increases. Thus, it lowers the limit of the applied voltage to the piezoelectric materials. Additionally, the electrical impedances of ultrasound transducers generally differ at the resonant-, center-, and anti-resonant-frequencies.

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26

Ahrens, T., JC Penick, and MK Tucker. "Frequency requirements for zeroing transducers in hemodynamic monitoring." American Journal of Critical Care 4, no. 6 (1995): 466–71. http://dx.doi.org/10.4037/ajcc1995.4.6.466.

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BACKGROUND: Accurate hemodynamic monitoring information can be obtained only if the transducer/amplifier system is used correctly. One major component of correct use is zeroing the transducer to provide a relative reference point on which to measure hemodynamic pressures. However, nursing requirements for frequency of zeroing are inconsistent. In addition, the concepts of leveling and zeroing are frequently confused. OBJECTIVE: To determine whether transducers drift from zero (+/- 2 mm Hg), and if they do not drift from zero, how long they hold a zero value. METHODS: The study, conducted in fo

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GAZDAG, ZSOLT. "DECIDABILITY OF THE SHAPE PRESERVING PROPERTY OF BOTTOM-UP TREE TRANSDUCERS." International Journal of Foundations of Computer Science 17, no. 02 (2006): 395–413. http://dx.doi.org/10.1142/s0129054106003899.

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It is a known result that both shape preserving top-down tree transducers and shape preserving bottom-up tree transducers are semantically equivalent to finite state relabeling tree transducers. Moreover, it is also known that the shape preserving property of top-down tree transducers is decidable. In this paper we present an analogous result for bottom-up tree transducers: we show that it is also decidable whether a bottom-up tree transducer is shape preserving or not.

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Ahern, Brian J., Jonathan D. Monti, Jason F. Naylor, Aaron J. Cronin, and Michael D. Perreault. "U.S. Army Combat Medic eFAST Performance with a Novel Versus Conventional Transducers: A Randomized, Crossover Trial." Military Medicine 185, Supplement_1 (2020): 19–24. http://dx.doi.org/10.1093/milmed/usz277.

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ABSTRACT Background Point-of-injury extended focused assessment with sonography in trauma (eFAST) may identify life-threatening torso hemorrhage and expedite casualty evacuation. The purpose of this study was to compare combat medic eFAST performance between the novel and conventional ultrasound (US) transducers. Methods We conducted a randomized crossover trial. Medic participants, previously naïve to US, were randomized to the type of transducer first utilized. The primary outcome was eFAST completion time in seconds. Secondary outcomes included diagnostic accuracy, technical adequacy, and t

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Bogdan, Mihai. "About the Smart Weather Station." ACTA Universitatis Cibiniensis 68, no. 1 (2016): 26–29. http://dx.doi.org/10.1515/aucts-2016-0006.

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Abstract Until recently, the Romanian weather stations utilized ordinary transducers that acquire useful information related to the desired physical inputs. These inputs will be converted into electrical signals easy to be processed by analog to digital converters. This paper proposed a new approach based on smart sensors system that change the interior behavior in order to optimize data acquirements from the environment. The smart sensor characteristics are stored into himself in a transducer electronic data sheet form (TEDS). The intelligent transducer generat together with the measured anal

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Bensch, Suna, Johanna Björklund, and Martin Kutrib. "Deterministic Stack Transducers." International Journal of Foundations of Computer Science 28, no. 05 (2017): 583–601. http://dx.doi.org/10.1142/s0129054117400081.

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We introduce and investigate stack transducers, which are one-way stack automata with an output tape. A one-way stack automaton is a classical pushdown automaton with the additional ability to move the stack head inside the stack without altering the contents. For stack transducers, we distinguish between a digging and a non-digging mode. In digging mode, the stack transducer can write on the output tape when its stack head is inside the stack, whereas in non-digging mode, the stack transducer is only allowed to emit symbols when its stack head is at the top of the stack. These stack transduce

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Yurikov, Alexey, Nazanin Nourifard, Marina Pervukhina, and Maxim Lebedev. "Laboratory ultrasonic measurements: Shear transducers for compressional waves." Leading Edge 38, no. 5 (2019): 392–99. http://dx.doi.org/10.1190/tle38050392.1.

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The ultrasonic measurements technique is well established to measure the elastic properties of rocks in the laboratory for seismic and well-log data interpretation. The key components of every laboratory ultrasonic setup are piezoelectric transducers, which generate and register elastic waves in rock samples. The elastic properties of rocks are determined through the velocities of elastic waves, which are measured by the times of the waves' travel from the source to the receiver transducer. Transducers can be specifically designed to generate P-waves (P-transducers) or S-waves (S-transducers).

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Wang, Jianjun, Donghuan Liu, Weijie Li, Peijun Wei, and Lihua Tang. "Effects of electrodes and electrical connections of piezoelectric layers on dynamic characteristics of radially polarized multilayer piezoelectric cylindrical transducers." Journal of Intelligent Material Systems and Structures 30, no. 1 (2018): 63–81. http://dx.doi.org/10.1177/1045389x18803454.

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Piezoelectric cylindrical transducer is a type of excellent smart devices that can generate radial sound radiation due to its unique structural characteristics and has been widely used for ultrasonic and underwater sound applications. In the design of a piezoelectric cylindrical transducer, especially with the multilayer structure, the electrodes and electrical connections of piezoelectric layers are two key factors affecting the device performance but have not been well evaluated, which result in the inaccurate prediction of dynamic characteristics. This work establishes the exact theoretical

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Fa, Lin, Lianlian Kong, Hong Gong, et al. "Numerical Simulation and Experimental Verification of Electric–Acoustic Conversion Property of Tangentially Polarized Thin Cylindrical Transducer." Micromachines 12, no. 11 (2021): 1333. http://dx.doi.org/10.3390/mi12111333.

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In solving piezoelectric equations of motion, we established an electric–acoustic equivalent circuit of tangentially polarized thin cylindrical transducers and derived analytical expressions of the electric-acoustic response from the harmonic driving-voltage excitation. To experimentally verify the findings, we manufactured a parallel electric-acoustic transmission network for transducers excited by multifrequency driving signals. We found that the tangentially polarized thin cylindrical transducers achieved a much higher electric-acoustic conversion efficiency than the radially polarized thin

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Pyo, Seonghun, and Yongrae Roh. "Equivalent circuit for analyzing the transmitting characteristics of multimode Tonpilz transducer." Journal of the Acoustical Society of America 151, no. 6 (2022): 3594–602. http://dx.doi.org/10.1121/10.0011515.

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Multimode Tonpilz transducers operate at longitudinal and flexural vibration modes simultaneously. Consequently, they have wider bandwidths than conventional single-mode transducers. Generally, the performance of Tonpilz transducers is analyzed using the finite element method (FEM), whereas the equivalent circuit method (ECM) has proven to be a fast and efficient alternative to the FEM. However, the ECM for analyzing the acoustic characteristics of multimode Tonpilz transducers has not yet been developed. To address this issue, an equivalent circuit for the multimode Tonpilz transducer is deve

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Lee, Jooho, Sheher Bano Zaigham, and Dong-Guk Paeng. "Shock Wave Characterization Using Different Diameters of an Optoacoustic Carbon Nanotube Composite Transducer." Applied Sciences 12, no. 14 (2022): 7300. http://dx.doi.org/10.3390/app12147300.

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Carbon nanotube–polymethyl siloxane (CNT-PDMS) composite transducers generate shock waves using optoacoustic technology. A thin layer of thermally conductive CNT and elastomeric polymer, PDMS, is applied on the concave surface of transparent polymethylmethacrylate (PMMA) to convert laser energy to acoustic energy using the thermoelastic effect of the composite transducer. The efficient conversion of laser energy requires an optimum utilization of the different properties of composite transducers. Among these properties, the diameter of composite transducers is a significant parameter. To pract

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Ge, Chang. "Numerical Simulation of Vibration Deflection Effects on the Energy Efficiency of Ultrasonic Transducer for Sonochemistry." Mathematical Problems in Engineering 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/591352.

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The energy efficiency of ultrasound transducers for sonochemistry applications was studied from the point of view of vibration deflection effects of different transducer structures, including the configurations of rectangular plate, cylindrical shell, triangular strip array, rectangular strip array, and pentagonal strip array. It was found that the deflections are not uniform over the transducer surface with the maximum deflection locating at the geometry center of transducers. The simulated maximum deflection of rectangular plate results in the value of2.5×10-16, which is larger than the maxi

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Sun, Hao, Yu Lan, Wei Lu, and Tianfang Zhou. "Theoretical modeling and modal analysis of multi-element coupled transducers." Journal of the Acoustical Society of America 157, no. 1 (2025): 433–44. https://doi.org/10.1121/10.0034862.

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Low-frequency transducers are considerably smaller than the wavelength. When multiple low-frequency transducers are closely packed, they couple with the surrounding water and form a transducer–water–transducer coupling structure called multi-element coupled transducers (MCT). This study presents a theoretical model of the MCT based on radiation and mutual radiation theory and analyzes it under multiple resonance frequencies and vibration modes. The MCT comprising N single-degree-of-freedom elements possesses N resonance frequencies and corresponding vibration modes, and the resonance frequency

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Pistun, Ye P., H. F. Matiko, and H. B. Krykh. "STRUCTURAL AND PARAMETRIC OPTIMIZATION OF GAS-HYDRODYNAMIC MEASURING TRANSDUCERS OF PHYSICAL AND MECHANICAL PARAMETERS OF FLUIDS." Bulletin of Kyiv Polytechnic Institute. Series Instrument Making, no. 62(2) (December 24, 2021): 23–31. http://dx.doi.org/10.20535/1970.62(2).2021.249174.

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The article is devoted to improving the methods for building throttle diagrams of gas-hydrodynamic measuring transducers of physical and mechanical parameters of fluids. The authors reviewed modern throttle transducers of various parameters, built on different diagrams, with different numbers and types of throttle elements, with different output signals. We established that the goodness of the measuring transducer is determined both by the structural diagram and the design characteristics of the throttle elements of a specific measuring diagram. The article proposes using structural synthesis

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Li, Jing, and Changhe Sun. "Design and optimization of an arc-shaped LWD quadrupole acoustic logging transducer." Journal of Physics: Conference Series 2982, no. 1 (2025): 012005. https://doi.org/10.1088/1742-6596/2982/1/012005.

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Abstract The acoustic logging transducer is the core component of the logging-while-drilling (LWD) instruments, which has great influence on the performance of well logging. In this article, an LWD quadrupole acoustic logging transducer composed of a layered structure with one thick metal plate and one high-temperature piezoelectric ceramic plate is proposed, and analyzes the influence of geometric structure parameters on the transducer’s performance using the finite element method. The model analysis results show that the first-order radial resonant frequency is in the range of 5 kHz-9 kHz, w

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Antсev, I. G., S. V. Bogoslovsky, G. A. Sapognikov, and A. R. Zhezherin. "SINGLE-PHASE UNIDIRECTIONAL TRANSDUCERS ANALYSIS AND THEIR APPLICATION TO SURFACE ACOUSTIC WAVE FILTERS DESIGN." Issues of radio electronics, no. 2 (February 20, 2019): 58–70. http://dx.doi.org/10.21778/2218-5453-2019-2-58-70.

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The unidirectional interdigital transducer topology features when designing SAW filters are considered. As well there are considered physical properties of various piezo‑crystals with different types of cut that allow to realize unidirectional operation of interdigital transducer. There are analyzed the conditions when the »natural» directivity of interdigital transducer becomes possible, topological variety of such transducers are considered. Various types of topology for transducers with a constant aperture are presented. Influence of the form, topology and dimensions of electrodes on charac

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Kim, Howuk, and Xiaoning Jiang. "Numerical Study of a Miniaturized, 1–3 Piezoelectric Composite Focused Ultrasound Transducer." Applied Sciences 13, no. 1 (2023): 615. http://dx.doi.org/10.3390/app13010615.

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This study aimed to develop an optimal methodology for the design of a miniaturized, 1–3 piezoelectric composite focused ultrasound transducer. Miniaturized focused ultrasound (FUS) devices, generally guided through catheters, have received considerable attention in the biomedical and ultrasound fields as they can overcome the technical restrictions of typical FUS transducers. However, miniaturized transducers cannot readily generate a high acoustic intensity because of their small aperture sizes and the vibration mode coupling. As such, 1–3 composite transducers, having a high electromechanic

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Yang, Liuqing, and Jun Zhang. "A self-reciprocity calibration of spherical transducers using boundary reflection in a spherical shell." Journal of the Acoustical Society of America 156, no. 2 (2024): 1041–47. http://dx.doi.org/10.1121/10.0028194.

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A self-reciprocity method is described for calibrating a spherical transducer in a spherical shell. The reciprocity constant is calculated using Green's function and the electroacoustic reciprocal principle in the spherical shell. A sensitivity correction is developed by calculating the transducer's receiving force in different fields. An experimental measurement setup is described to calibrate transducers with diameters of 20 and 30 mm in the frequency range from 25 to 63 kHz, calibrated in a 500 mm diameter spherical shell with a thickness of 2 mm. The largest discrepancy in calibration resu

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Wang, Wenjie, Weihao Shi, Peter Thomas, and Mingsui Yang. "Design and Analysis of Two Piezoelectric Cymbal Transducers with Metal Ring and Add Mass." Sensors 19, no. 1 (2019): 137. http://dx.doi.org/10.3390/s19010137.

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Based on traditional sandwich structure, two piezoelectric transducers were designed to meet the strict underwater application backgrounds such as high pressure, corrosion resistance, and high strength. Both transducers integrated most of previous researches while one transducer has a multilayer cavity structure which is different from the other structure and previous transducer structures. After a detailed simulation analysis of every structural parameter, key parameters were pointed out to have an obvious influence on its performance. Then, two models were constructed and compared with chose

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Lu, Duhui, Jianliang Liu, Mukai Wang, and Sen Gu. "State-of-the-Art Design and Optimization of Strain Gauge-Type Load–Displacement Transducer for in In Situ Nanoindentation Systems." Sensors 25, no. 3 (2025): 609. https://doi.org/10.3390/s25030609.

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Force–displacement transducers are key components in in situ nanoindentation systems. The current existing capacitance-type transducers adopted in state-of-the-art commercial in situ nanoindentation systems are restricted by limited maximum ranges, and strain gauge-type transducers in the current in situ nanoindentation systems have the limitation of low resolution and high values of mass. In the paper, we propose a mechanical design and improvement of a low-mass strain gauge-type force–displacement transducer capable of performing high resolution in situ nanoindentation measurements. The tran

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Busch-Vishniac, Ilene J. "Spatially Distributed Transducers: Part II—Augmented Transmission Line Models." Journal of Dynamic Systems, Measurement, and Control 112, no. 3 (1990): 381–90. http://dx.doi.org/10.1115/1.2896155.

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Transducer models are typically comprised of a finite number of discrete lumped elements connected using circuit conventions. Such models are inappropriate for transducers which explicitly depend upon the continuous nature of one or more system element. These transducers must be modeled as spatially distributed devices. In this article we present a class of models which is useful for spatially distributed transducers in which the response at one location is coupled to that at other locations. The models use a transmission line to describe the mechanical coupling between locations on the transd

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Liu, Z., and C. W. Higgins. "Does temperature affect the accuracy of vented pressure transducer in fine-scale water level measurement?" Geoscientific Instrumentation, Methods and Data Systems 4, no. 1 (2015): 65–73. http://dx.doi.org/10.5194/gi-4-65-2015.

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Abstract. Submersible pressure transducers have been utilized for collecting water level data since the early 1960s. Together with a digital data logger, it is a convenient way to record water level fluctuations for long-term monitoring. Despite the wide use of pressure transducers for water level monitoring, little has been reported regarding their accuracy and performance under field conditions. The effects of temperature fluctuations on the output of vented pressure transducers were considered in this study. The pressure transducers were tested under both laboratory and field conditions. Th

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Jin, Dan, and Zhao Hui Li. "Simulation and Optimization of Wedge-Shaped Ultrasonic Transducers Using Finite Element Method (FEM)." Applied Mechanics and Materials 281 (January 2013): 112–15. http://dx.doi.org/10.4028/www.scientific.net/amm.281.112.

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Wedge-shaped transducers have been widely used in industry as probes for ultrasonic flowmeters or for ultrasonic flaw detectors. But by now, few studies have focused on the influence to the performance of the wedge-shaped transducers brought by their limited size. In this paper, the effect of the shape and size of wedge-shaped substrates on the whole transducer system is discussed and the shape and size of a transducer (0.5MHz) is optimized to eliminate the influence of the boundary effect by using a 2-D Finite Element (FE) model. Lastly, wedge-shaped transducers have been manufactured for exp

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Wang, Zi Ping, and Ying Luo. "Focusing Actuating Performance of OPFC Phased Array Transducer Based on DPSM." Key Engineering Materials 609-610 (April 2014): 1299–304. http://dx.doi.org/10.4028/www.scientific.net/kem.609-610.1299.

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As a new functional composite material, Orthotropic Piezoelectric Fiber Composite (OPFC) may be developed conveniently actuators and sensors. By constructing multi-element linear array, the phased array transducers can generate special directional strong actuator power and high sensitivity. The advantage of the transducers is that no mechanical movement is needed to scan an object. Focusing beam is obtained simply only by adjusting a parabolic time delay. The DPSM (distributed point source method) is used to model the ultrasonic field by OPFC linear array transducer. Using this approach, beam

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Shim, Hayeong, and Yongrae Roh. "Design and Fabrication of a Wideband Cymbal Transducer for Underwater Sensor Networks." Sensors 19, no. 21 (2019): 4659. http://dx.doi.org/10.3390/s19214659.

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Cymbal transducers are characterized by a high mechanical quality factor and low power efficiency. The research conducted so far on cymbal transducers has focused on improving the power efficiency and structural stability, but modern underwater sensor network systems need transducers to have a wide frequency bandwidth as well. In this study, a wideband cymbal transducer was designed to fill that need. First, the effect of various structural parameters on the performance of the cymbal transducer was analyzed with emphasis on the bandwidth using the finite element method. Based on the analysis r

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Mańka, Michał, Adam Martowicz, Mateusz Rosiek, Łukasz Ambroziński, and Tadeusz Uhl. "Numerical Modelling and Experimental Verification of Interdigital Transducers for Lamb Wave Generation." Solid State Phenomena 220-221 (January 2015): 843–48. http://dx.doi.org/10.4028/www.scientific.net/ssp.220-221.843.

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Recently, intensive research activity in the application of guided waves (GWs) for structural health monitoring (SHM) has been observed. Interdigital Transducer (IDT) is one of the types of transducers used for generating GWs. The main advantages of such transducers include their ability in generating directional and mode-selective waves. The parameters of IDTs have to be adjusted for the excited wavelength. Some geometric parameters as well as the properties of materials used for manufacturing transducers may be defined using widely known analytical relationships [1]. However, in order to acc

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