Design of an electromechanical system for measuring and monitoring micro-ultrasonic amplitude of Langevin transducer

Baraya, Mohamed; Hossam, Mohab

doi:10.1007/s00170-020-04922-w

Cited by 10 publications

(8 citation statements)

References 21 publications

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“…The first step in constructing the FEA model was to build the geometry of the transducer parts. Dimensions of each part of the transducer were calculated based on the acoustic wave equation [ 28 ]. After that, the ABAQUS package has been used to build the model geometry shown in Figure 1 a.…”

Section: Transducer Fea Modelling and Manufacturingmentioning

confidence: 99%

“…Initially, the front mass geometry was assumed to be stepped. The stepped horn was distinguished by the high amplification of vibration amplitude [ 28 ].…”

Section: Transducer Fea Modelling and Manufacturingmentioning

confidence: 99%

“…Initially, the front mass geometry was assumed to be stepped. The stepped horn was distinguished by the high amplification of vibration amplitude [28]. Based on the literature, proper materials have been assigned to each transducer parts.…”

Section: Transducer Fea Modelling and Manufacturingmentioning

confidence: 99%

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Experimental Analyses and Predictive Modelling of Ultrasonic Welding Parameters for Enhancing Smart Textile Fabrication

Baraya,

El-Asfoury,

Fadel

et al. 2024

Sensors

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This study aims to illustrate the design, fabrication, and optimisation of an ultrasonic welding (UW) machine to join copper wires with non-woven PVC textiles as smart textiles. The study explicitly evaluates UW parameters’ impact on heat generation, joint strength, and electrical properties, with a comprehensive understanding of the process dynamics and developing a predictive model applicable to smart textiles. The methodological approach involved designing and manufacturing an ultrasonic piezoelectric transducer using ABAQUS finite element analyses (FEA) software and constructing a UW machine for the current purpose. The full factorial design (FFD) approach was employed in experiments to systematically assess the influence of welding time, welding pressure, and copper wire diameter on the produced joints. Experimental data were meticulously collected, and a backpropagation neural network (BPNN) model was constructed based on the analysis of these results. The results of the experimental investigation provided valuable insights into the UW process, elucidating the intricate relationship between welding parameters and heat generation, joint strength, and post-welding electrical properties of the copper wires. This dataset served as the basis for developing a neural network model, showcasing a high level of accuracy in predicting welding outcomes compared to the FFD model. The neural network model provides a valuable tool for controlling and optimising the UW process in the realm of smart textile production.

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Section: Transducer Fea Modelling and Manufacturingmentioning

confidence: 99%

“…Initially, the front mass geometry was assumed to be stepped. The stepped horn was distinguished by the high amplification of vibration amplitude [ 28 ].…”

Section: Transducer Fea Modelling and Manufacturingmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Analyses and Predictive Modelling of Ultrasonic Welding Parameters for Enhancing Smart Textile Fabrication

Baraya,

El-Asfoury,

Fadel

et al. 2024

Sensors

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“…Measuring the amplitude of the ultrasonic transducer is essential in UVa microforming systems to assess the machine's performance. Several studies have discussed amplitude measurements on ultrasonic transducers, one of which is by Baraya et al In their study, the measurement system was created using an oscilloscope and a micrometer [4]. This measurement system consists of two electrical circuits.…”

Section: Introductionmentioning

confidence: 99%

Development of Amplitude Measurement System for Ultrasonic Vibration Assisted Micro Forming

Kiswanto,

Dwiyati,

Adityawarman

et al. 2024

J. Phys.: Conf. Ser.

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Microforming is a process that involves forming a material through plastic deformation at a micro level. However, this method encounters an issue at the micro-scale known as the size effect. There are several new approaches to overcome these difficulties, one of which is using Ultrasonic Vibration Assisted (UVA) micro forming. UVA micro forming is a forming method by applying high-frequency vibrations to the workpiece to reduce forming forces, increase smooth zone, reduce surface roughness, and increase accuracy. A bolted Langevin transducer is needed to produce vibration, which converts electrical signals into acoustic signals in the ultrasonic frequency range. Therefore, the vibration characteristics must be considered in detail to find the best parameters in the micro forming process. This study aims to develop an amplitude measurement system for UVA micro forming. Several things that need to be considered in designing a measurement system are pre-stress characteristics, resonant frequency of the machine, and the amplitude of the vibration generated by the system. Firstly, a pre-stress test was carried out by tightening the pre-stress bolt slowly until the resonant frequency did not change. Then, the resonant frequency is measured using signal generator, oscilloscope, transducer, and resistor to determine the system’s resonant frequency. Finally, the vibration amplitude is measured by observing the displacement at the end of the punch using a digimatic indicator. The result shows that the resonance frequency that produces longitudinal vibration for UVA micro forming system is 28,720 Hz, with a pre-stress of 30 MPa with torque of 14.36 Nm, and total displacement on the normal axis is 9 μm.

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“…In the process of performing finite element analysis, the choice of mesh size and element type is very important [20] because it directly affects the accuracy of the results and the running time of the model. However, most of the published studies involving ultrasonic devices use only a single element type for components with different electrical and mechanical properties [5,[21][22][23][24][25][26] or the publication is not presented in detail [18,19,[27][28][29]. For example, Ceramic has special electromechanical properties that are different from other transducer components, as well as metal parts of horns, boosters, etc.…”

Section: Introductionmentioning

confidence: 99%

Dynamic response of high-power ultrasonic system based on finite element modeling of piezoelectric

Luong,

Duong,

Ngoc

et al. 2023

J Appl Eng Science

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In this study, a new finite element model for ultrasonic welding equipment is proposed. This help to solve remaining issues such as element type selection for the numerical model, mesh size, and how to determine the parameters of piezoelectric materials. The obtained results clearly show the influence of element type and mesh size on resonance frequency and amplitude. Specifically, with a mesh size of 2 mm, it was concluded to be suitable for the model. For the C3D8 element (C3D8E), the computation time is reduced by 0.25 times compared to the C3D20R element (C3D20RE). After that, an experimental processing procedure is performed to evaluate the numerical simulation results. Specifically, the handling of signal noise when measuring a very small displacement at high frequencies of an ultrasonic vibrating device. Based on the confirmed finite element model, this model is extended to evaluate the influence of the load on the amplitude and resonant frequency of the ultrasonic welding system. The results show that when the load increases, the amplitude decreases while the resonant frequency increases. The results of this study can be applied to the design of ultrasonic vibration systems.

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Design of an electromechanical system for measuring and monitoring micro-ultrasonic amplitude of Langevin transducer

Cited by 10 publications

References 21 publications

Experimental Analyses and Predictive Modelling of Ultrasonic Welding Parameters for Enhancing Smart Textile Fabrication

Experimental Analyses and Predictive Modelling of Ultrasonic Welding Parameters for Enhancing Smart Textile Fabrication

Development of Amplitude Measurement System for Ultrasonic Vibration Assisted Micro Forming

Dynamic response of high-power ultrasonic system based on finite element modeling of piezoelectric

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