Ultrasonics最新文献_第2页

Visualization of specular reflections with phase coherence imaging using sub-apertures 利用子孔径进行相位相干成像的镜面反射可视化

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-06-14 DOI: 10.1016/j.ultras.2025.107719

Tony Rasolonirina , Guillaume Painchaud-April , Alain Le Duff , Pierre Bélanger

{"title":"Visualization of specular reflections with phase coherence imaging using sub-apertures","authors":"Tony Rasolonirina , Guillaume Painchaud-April , Alain Le Duff , Pierre Bélanger","doi":"10.1016/j.ultras.2025.107719","DOIUrl":"10.1016/j.ultras.2025.107719","url":null,"abstract":"<div><div>In recent years, phased array ultrasonic testing (PAUT) has gradually been substituted by approaches such as the Total Focusing Method (TFM), which use the Full Matrix Capture (FMC) acquisition scheme. Phase Coherence Imaging (PCI) has been proposed to mitigate the problems associated with amplitude-based TFM. PCI also holds high potential for dramatically simpler and far more affordable instruments as it only requires the phase of signals. However, in the context of PCI and in a scenario where the amplitude is not acquired, point-like scatterers would easily be identified due to their diffractive nature, while specular reflectors would not be detectable, as specular information is only captured by a specific group of elements known as sub-apertures (SA). In this paper, specular wave paths are analyzed to predict and choose the suitable emitting and receiving SA that are sensitive to specular reflections. The work demonstrates the effectiveness of the proposed method for revealing specular information by comparing PCI images of notches with the corresponding pairs of side-drilled holes (SDH) at their extremities. Results on two fatigue cracks are also presented as more realistic scenarios, and show that, while PCI highlights diffuse reflections, selecting the right SA on PCI mainly exhibit specular reflections, and reduce the image quality owing to the fact that the number of active elements in the aperture is reduced. When dedicated PCI instruments are present, the proposed method should be included in the inspection workflow to obtain images. PCI may not only be a complementary solution to amplitude imaging, but indeed, a solution in its own right. Finally, as Vector Coherence Factor (VCF) imaging can be achieved using binary acquisitions, this method allows to obtain images very similar to those from TFM should one wish to use simplified instruments.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"155 ","pages":"Article 107719"},"PeriodicalIF":3.8,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144312560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characteristics and stability mechanism of non-contact ultrasonic motor with a longitudinal transducer 纵向换能器非接触式超声电机特性及稳定机理研究

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-06-11 DOI: 10.1016/j.ultras.2025.107729

Minghui Shi, Ming Gao, Shujie Chen, Shaolin Zhang

{"title":"Characteristics and stability mechanism of non-contact ultrasonic motor with a longitudinal transducer","authors":"Minghui Shi, Ming Gao, Shujie Chen, Shaolin Zhang","doi":"10.1016/j.ultras.2025.107729","DOIUrl":"10.1016/j.ultras.2025.107729","url":null,"abstract":"<div><div>Ultrasonic motors (USMs) as a kind of smart drive actuator have potential in space explorations, optical system, precise instrument, biomedicine, etc. However, a series of challenges, such as complex phase control system, severe friction and wear between the stator and rotor, unpractical motor structure, restrict the development and commercialization of ultrasonic motors. To tackle these problems, a non-contact ultrasonic motor with a longitudinal transducer based on near-field acoustic levitation was presented to simplify the structure and improve motor performance. Acoustic levitation force can separate the stator and rotor during operation, completely eliminating friction and wear between the stator and rotor. The driving torque is generated by the high-frequency squeezing vibration of the stator. In addition, restoring force caused by acoustic levitation can enhance the stability of rotor operation. The widely used longitudinal transducer as a stator can promote commercial applications. To assess the validity, a theoretical model based on Navier-Stokes equations was constructed to discuss the characteristics and stability mechanism of the proposed motor. A prototype was designed and manufactured and the levitation force tests and restoring force experiments have been carried out. The analysis shows that the rotational speed increases with increase of the driving voltage. The restoring force get enhanced by considering the grooves on the surface of rotor. At 1430 V voltage, the motor yielded the rotational speed and restoring force of 30 rpm and 8.5 mN, respectively. This study sheds a new light on the design of ultrasonic motors and further promotes application to automatic industries.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"155 ","pages":"Article 107729"},"PeriodicalIF":3.8,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of choroidal melanoma and nevus lesions using ultrasound vibro-elastography and parametric imaging approach 超声振动弹性成像和参数成像方法评估脉络膜黑色素瘤和痣病变

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-06-09 DOI: 10.1016/j.ultras.2025.107725

Ngoc Thang Bui , Lauren A. Dalvin , Xiaoming Zhang

{"title":"Assessment of choroidal melanoma and nevus lesions using ultrasound vibro-elastography and parametric imaging approach","authors":"Ngoc Thang Bui , Lauren A. Dalvin , Xiaoming Zhang","doi":"10.1016/j.ultras.2025.107725","DOIUrl":"10.1016/j.ultras.2025.107725","url":null,"abstract":"<div><div>The purpose of this study was to assess eye lesions by analyzing wave speed (WS) of lesions using ultrasound vibro-elastography (UVE) together with a parametric ultrasound imaging approach. Ten subjects with eye lesions (5 nevus (N) vs. 5 melanoma (M)) were recruited and tested using UVE. In addition, the sliding window method was used to reconstruct and analyze horizontal Normalized Shannon Entropy (hNSE) images and Nakagami-<em>m</em>/omega images. Two-way ANOVA statistical analysis was performed to compare mean values of the contrast to noise ratio (CNR), hNSE, and <em>m</em>/omega of these images between the two types of lesions. The results show that there were significant differences in CNR of the <em>m</em> map images (<em>p</em> = 0.0174) and omega map images (<em>p</em> = 0.0128) reconstructed from shear wave velocity (SWV) between the two types of lesions and significant differences in CNR of the <em>m</em> map images (<em>p</em> = 0.0209) and omega map images (<em>p</em> < 0.0001) reconstructed from two dimensional (2D) speed maps between the two lesions Furthermore, the <em>m</em> values of 2D speed maps shows significant differences between N vs. M of all three frequencies (i.e., 100 Hz (<em>p</em> = 0.0052), 150 Hz (<em>p</em> = 0.0100), 200 Hz (<em>p</em> = 0.0174)). The results suggest that CNR, <em>m</em> and omega of Nakagami method are useful biomarkers for assessing eye lesion with UVE technique. Nakagami imaging of SWV and 2D speed maps have better performance than hNSE imaging for analyzing characteristics of eye lesions. UVE based Nakagami imaging is a promising method for evaluating eye lesions.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"155 ","pages":"Article 107725"},"PeriodicalIF":3.8,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144263300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantitative comparison of the total focusing method, reverse time migration, and full waveform inversion for ultrasonic imaging 超声成像的全聚焦法、逆时偏移法和全波形反演法的定量比较

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-06-09 DOI: 10.1016/j.ultras.2025.107705

Tim Bürchner , Simon Schmid , Lukas Bergbreiter , Ernst Rank , Stefan Kollmannsberger , Christian U. Grosse

{"title":"Quantitative comparison of the total focusing method, reverse time migration, and full waveform inversion for ultrasonic imaging","authors":"Tim Bürchner , Simon Schmid , Lukas Bergbreiter , Ernst Rank , Stefan Kollmannsberger , Christian U. Grosse","doi":"10.1016/j.ultras.2025.107705","DOIUrl":"10.1016/j.ultras.2025.107705","url":null,"abstract":"<div><div>Phased array ultrasound is a widely used technique in non-destructive testing. Using piezoelectric elements as both sources and receivers provides a significant gain in information and enables more accurate defect detection. The process is called full matrix capture when all source–receiver combinations are used. The total focusing method (TFM) exploits such datasets and relies on a delay and sum algorithm to sum up the signals on a pixel grid. However, TFM only uses the first arriving p-waves, making it challenging to size complex-shaped defects. By contrast, more advanced methods such as reverse time migration (RTM) and full waveform inversion (FWI) use full waveforms to reconstruct defects. Both methods compare measured signals with ultrasound simulations. While RTM identifies defects by convolving forward and backward wave fields once, FWI iteratively updates material models to reconstruct the actual distributions of material properties. This study compares TFM, RTM, and FWI for six specimens featuring circular defects or Y-shaped notches. The reconstructed results are first evaluated qualitatively by visual assessment, then different defect segmentation approaches are studied, and finally, they are evaluated quantitatively using metrics such as AUPRC, AUROC, and F1-score. The results show that a two-step FWI framework performs best in most of the six samples studied, both qualitatively and quantitatively.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"155 ","pages":"Article 107705"},"PeriodicalIF":3.8,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A dual-mode transducer in the traveling wave rotary ultrasonic motor to extend the high-efficiency speed range 在行波旋转超声电机中采用双模换能器，扩大了高效调速范围

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-06-07 DOI: 10.1016/j.ultras.2025.107723

Rui Xu, Ying Yang, Jiamei Jin, Liang Wang

{"title":"A dual-mode transducer in the traveling wave rotary ultrasonic motor to extend the high-efficiency speed range","authors":"Rui Xu, Ying Yang, Jiamei Jin, Liang Wang","doi":"10.1016/j.ultras.2025.107723","DOIUrl":"10.1016/j.ultras.2025.107723","url":null,"abstract":"<div><div>This study proposes a dual-mode transducer design for the traveling wave rotary ultrasonic motor (TRUM) to address the inherent limitation of narrow high-efficiency speed ranges in conventional single-mode counterparts, which critically hinder their applicability in aerospace systems requiring sustained low-speed operation and transient high-speed adjustments. By synergistically integrating low-order (B03) and high-order (B09) vibration modes, the motor achieves enhanced electromechanical efficiency across an extended operational speed spectrum. A Kirchhoff plate-based dynamic model establishes the quantitative relationship between modal characteristics and performance metrics, revealing that low-order modes amplify torque capacity through larger amplitudes, while high-order modes prioritize speed via elevated tangential velocities. Perturbation theory predicts asymmetric modal splitting susceptibility, demonstrating that low-order modes exhibit higher splitting propensity than high-order modes under equivalent manufacturing imperfections—validated experimentally through laser Doppler vibration scanning. Finite element-driven structural optimization enhances B03 and B09 mode amplitudes by 78 % (1400–2500 nm) and 63 % (800–1300 nm), respectively. Prototype characterization confirms the dual-mode TRUM achieves peak efficiencies of 17.7 % (B03 mode) and 16.5 % (B09 mode), with a 47 % broader high-efficiency speed range compared to single-mode configurations. A perturbation-theoretic correction method effectively mitigates B03 mode splitting, improving stall torque by 80 % and efficiency by 30.9 % without destabilizing B09 modal dynamic. The proposed methodology advances precision motor design through mode-switching strategies, modal splitting control, and multi-physics optimization, offering a paradigm for next-generation high-efficiency ultrasonic actuators.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"155 ","pages":"Article 107723"},"PeriodicalIF":3.8,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving the resistance to high-temperature oxidation of 254SMo super-austenitic stainless steel welds using ultrasonic shot peening-induced gradient nanostructures 利用超声喷丸诱导梯度纳米结构提高254SMo超奥氏体不锈钢焊缝的耐高温氧化性

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-06-06 DOI: 10.1016/j.ultras.2025.107721

Xincheng Xie , Zhixiang Zou , Mingchao Chen , Jinrui Xiao , Zhongwei Liang , Jiayi Chen

{"title":"Improving the resistance to high-temperature oxidation of 254SMo super-austenitic stainless steel welds using ultrasonic shot peening-induced gradient nanostructures","authors":"Xincheng Xie , Zhixiang Zou , Mingchao Chen , Jinrui Xiao , Zhongwei Liang , Jiayi Chen","doi":"10.1016/j.ultras.2025.107721","DOIUrl":"10.1016/j.ultras.2025.107721","url":null,"abstract":"<div><div>This paper reported the strengthening of the surface of 254SMo stainless steel welds by the ultrasonic shot peening process (USP) to prepare gradient nanostructures, and their surface properties and high-temperature oxidation performance at different temperatures were explored. After investigating the surface morphology, microstructure, residual stress, and microhardness of the welds after USP, the resistance towards high-temperature oxidation of the samples processed by USP at 700, 800, and 900°C was studied. Also discussed were the possible influence mechanisms of the high-temperature oxidation properties of 254SMo stainless steel welds enhanced by USP processing. The results showed the preparation of gradient nanostructures on the surface of 254SMo stainless steel welds using USP and the residual compressive stress and maximum microhardness at the weld were −496.37 MPa, and 357.5 HV respectively. At 700°C, 800°C welds show better oxidation resistance, while at 900°C due to a large number of MoO<sub>3</sub> generation, oxidation is intense. At 700°C, 800°C, and 900°C, the oxidation reaction rate constants decreased by 61.3 %, 55 %, and 63.8 % respectively, and a thick protective oxide film was formed. This is because a large number of grain boundaries generated by grain refinement promoted the formation of Cr<sub>2</sub>O<sub>3</sub> and inhibited the generation of MoO<sub>3</sub>. The study shows that the gradient nanostructures prepared by USP are an effective method for improved oxidation resistance of materials at high temperatures.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"155 ","pages":"Article 107721"},"PeriodicalIF":3.8,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The peculiarities of measuring the ultrasound attenuation using an acoustic interferometer in continuous and pulsed modes 用声波干涉仪在连续和脉冲模式下测量超声衰减的特点

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-06-02 DOI: 10.1016/j.ultras.2025.107712

B.D. Zaitsev, A.P. Semyonov, I.A. Borodina, A.A. Teplykh

{"title":"The peculiarities of measuring the ultrasound attenuation using an acoustic interferometer in continuous and pulsed modes","authors":"B.D. Zaitsev, A.P. Semyonov, I.A. Borodina, A.A. Teplykh","doi":"10.1016/j.ultras.2025.107712","DOIUrl":"10.1016/j.ultras.2025.107712","url":null,"abstract":"<div><div>The paper is devoted to the features of measuring the attenuation of acoustic waves in a liquid using an acoustic interferometer consisting of radiating and receiving transducers of longitudinal acoustic wave located opposite each other. It is known, that the dependence of the wave transmission coefficient on the distance between the transducers is in this case a quasi-periodic function with a decreasing amplitude. The period of this dependence is equal to half the wavelength, which allows determining the wave velocity. The decrease in amplitude with increasing pointed distance is associated not only with the true attenuation of the acoustic wave in the liquid, but also with false attenuation. The false attenuation is due to the diffraction effects, the loss of part of the wave power through the transducers, and the non-parallelism of the transducer sides. The method of determining the true attenuation taking into account the listed factors for operation of interferometer in continuous and pulse modes is developed using glycerol and a mixture of “90 % glycerol + 10 % water” as an example. The importance of the problem under consideration is determined by the fact that the attenuation of a longitudinal acoustic wave is uniquely related to the longitudinal viscosity, which for the most Newtonian liquids is unknown, unlike the shear viscosity measured by standard viscometers.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"155 ","pages":"Article 107712"},"PeriodicalIF":3.8,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3D-printed phononic crystal filters for second harmonics separation in nonlinear ultrasonic non-destructive testing 三维打印声子晶体滤波器用于非线性超声无损检测中的二次谐波分离

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-05-31 DOI: 10.1016/j.ultras.2025.107720

Yue Chen , Youxuan Zhao , Mingxi Deng , Ning Hu

{"title":"3D-printed phononic crystal filters for second harmonics separation in nonlinear ultrasonic non-destructive testing","authors":"Yue Chen , Youxuan Zhao , Mingxi Deng , Ning Hu","doi":"10.1016/j.ultras.2025.107720","DOIUrl":"10.1016/j.ultras.2025.107720","url":null,"abstract":"<div><div>Higher harmonic method is widely employed to detect and evaluate early material degradation in nonlinear ultrasonic non-destructive testing. However, the separation of extremely weak nonlinear harmonics (especially second harmonics) from received signals represents a significant challenge. Therefore, it is feasible to use the bandgap property of phononic crystals to achieve second harmonics separation. In this paper, numerical simulations are performed to verify the filtering capability of the filters. The influence of the unit-cell’s spatial arrangement in the filter is also numerically investigated. Meanwhile, 3D-printed cubic-structured phononic crystal filters are employed to experimentally demonstrate the efficient filtering capability for separating. It is found that the accuracy of 3D-printing can significantly affect the filtering capability. The 3D-printing accuracy would be increased with the filtering frequency of the filter. This study provides numerical and experimental basis for the application of the 3D-printed cubic-structured phononic crystal filter in NDT.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"155 ","pages":"Article 107720"},"PeriodicalIF":3.8,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

VMARC: A general framework for ultrasound imaging enhancement VMARC：超声成像增强的一般框架

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-05-31 DOI: 10.1016/j.ultras.2025.107698

Qijun Hu , Mengxuan Wang , Zhifei Dai , Miaomiao Zhang

引用次数: 0

Experimental and numerical investigation of self-heating effects on the through-metal ultrasonic power transfer efficiency 自热对穿透金属超声功率传递效率影响的实验与数值研究

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-05-29 DOI: 10.1016/j.ultras.2025.107696

Allen Zhou , Prabhakaran Manogharan , Kevin Dix , Ihab El-Kady , Alper Erturk

{"title":"Experimental and numerical investigation of self-heating effects on the through-metal ultrasonic power transfer efficiency","authors":"Allen Zhou , Prabhakaran Manogharan , Kevin Dix , Ihab El-Kady , Alper Erturk","doi":"10.1016/j.ultras.2025.107696","DOIUrl":"10.1016/j.ultras.2025.107696","url":null,"abstract":"<div><div>Ultrasonic waves can be efficiently used to power electronic devices sealed inside a metallic enclosure, such as small sensors and other electrical components. Ultrasonic power transfer (UPT) can provide energy to these electronics while maintaining structural integrity in situations where perforating the metallic barrier for tethered charging or battery replacement is not possible. A typical through-metal UPT system consists of two piezoelectric transducers bonded symmetrically on either side of a metallic barrier, where the transducers transmit and receive elastic waves and convert the mechanical energy into electrical energy at the receiver end. For continuous and optimal performance of a UPT system, it is imperative to understand the losses that affect its efficiency. That is, dielectric and mechanical losses within UPT systems cause self-heat generation that can significantly affect the efficiency of the UPT system. In this work, the effects of temperature on UPT efficiency are studied using both numerical and experimental methods. We drive the piezoelectric transducer continuously at various input power levels to study the power transmission efficiency and temperature of the UPT system over time. Multiphysics (coupled electro-mechanical-thermal) finite-element simulations are performed to estimate the temperature profile of the UPT system. We quantify how the power transmission efficiency of continuously-driven UPT systems decreases over time as temperature rises. In addition, numerical simulations show that mechanical losses are the dominant source of losses for the self-heat generation in the UPT system (as compared to dielectric etc.). Our reported results provide insights for optimizing UPT system design and for understanding the self-heat generation characteristics.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"155 ","pages":"Article 107696"},"PeriodicalIF":3.8,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0