Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Longitudinal vibration sandwich piezoelectric transducers with a stepped horn are widely used in high-intensity ultrasonic applications such as ultrasonic welding, ultrasonic machining, and ultrasonic cleaning. In these applications, due to the increased losses, transducers exhibit nonlinear phenomena such as heating, resonance frequency drift, and amplitude saturation. Consequently, existing linear theoretical models are no longer suitable for analyzing the nonlinear characteristics of such transducers. In this paper, we develop a nonlinear equivalent circuit model for a longitudinal vibration piezoelectric transducer with a stepped horn, considering elastic loss, composite loss (the total loss resulting from the combination of elastic, dielectric, and piezoelectric losses) and structural damping loss. Through theoretical analysis, finite element simulation, and experimental testing, we investigate the effects of each type of loss on the key electromechanical performance parameters of the transducer. The research results provide accurate theoretical guidance and reference data for the application of such transducers in high-intensity ultrasonic scenarios.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.ultsonch.2025.107533 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Study on the nonlinear characteristic of a longitudinal piezoelectric ultrasound transducer with stepped horn.
Ultrason Sonochem
August 2025
Key Laboratory of Acoustics and Vibration Applied Measuring Technology, State Administration for Market Regulation, Hangzhou 310018, China.
Longitudinal vibration sandwich piezoelectric transducers with a stepped horn are widely used in high-intensity ultrasonic applications such as ultrasonic welding, ultrasonic machining, and ultrasonic cleaning. In these applications, due to the increased losses, transducers exhibit nonlinear phenomena such as heating, resonance frequency drift, and amplitude saturation. Consequently, existing linear theoretical models are no longer suitable for analyzing the nonlinear characteristics of such transducers.
View Article and Find Full Text PDFHorn antennas are pivotal couplers for terahertz (THz) waveguide transmission systems, yet conventional designs usually prioritize the far-field performance mainly considering the long-distance wireless communication and radar applications, often overlooking the near-field beam pattern optimization. Here, we present a monolithic polymer-based THz horn-lens system fabricated via liquid-crystal display stereolithography (LCD-SLA) 3D printing. Through the structurally designed stepped gradient and the geometric focusing advantage of the lens, a near-Gaussian emission beam without sidelobes is achieved.
View Article and Find Full Text PDFStudy on the vibration performance and sound field of a novel push-pull ultrasonic transducer with slotted tube.
Ultrasonics
July 2025
College of Physics and Electronic Information Engineering, Zhejinag Normal University, Jinhua 321004, China.
To address the challenges in ultrasonic processing for large capacity liquids, improving the electroacoustic conversion efficiency, expanding the radiation direction, and enhancing the uniformity of the sound field have become imperative and focal objectives in the design of high-power ultrasonic transducers. Hence, a novel push-pull slotted tube ultrasonic transducer (PSTUT) based on longitudinal-bending mode conversion has been proposed. The PSTUT is composed of four key parts: two sandwich transducers, two stepped horns, two end caps, and a slotted tube radiator.
View Article and Find Full Text PDFLongitudinal-radial composite spherical shell ultrasonic transducer with omnidirectional ultrasonic radiation.
Ultrasonics
June 2025
Zhejiang Institute of Quality Sciences, Hangzhou 310018, China; Key Laboratory of Acoustics and Vibration Applied Measuring Technology, State Administration for Market Regulation, Hangzhou 310018, China.
This paper presents the development and analysis of a longitudinal-radial composite spherical shell ultrasonic transducer, designed to address the need for omnidirectional and extensive ultrasonic radiating areas in ultrasonic applications. The transducer comprised of a sandwich piezoelectric converter, a stepped horn, and a metal spherical shell. The longitudinal vibration of the sandwich piezoelectric converter and the stepped horn excites the radial vibration of the metal spherical shell, thereby enabling omnidirectional ultrasonic radiation along the exterior of the spherical shell.
View Article and Find Full Text PDFLongitudinal-Torsional Frequency Coupling Design of Novel Ultrasonic Horns for Giant Magnetostrictive Transducers.
Sensors (Basel)
September 2024
Mechanical Engineering Department, University of Engineering and Technology, Lahore 54890, Pakistan.
The use of advanced brittle composites in engineering systems has necessitated robotic rotary ultrasonic machining to attain high precision with minimal machining defects such as delamination, burrs, and cracks. Longitudinal-torsional coupled (LTC) vibrations are created by introducing helical slots to a horn's profile to enhance the quality of ultrasonic machining. In this investigative research, modified ultrasonic horns were designed for a giant magnetostrictive transducer by generating helical slots in catenoidal and cubic polynomial profiles to attain a high amplitude ratio (TA/LA) and low stress concentrations.
View Article and Find Full Text PDF