Ultrasonics最新文献_第2页

Longitudinal-radial composite spherical shell ultrasonic transducer with omnidirectional ultrasonic radiation

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-02-10 DOI: 10.1016/j.ultras.2025.107597

Zhang Haidao , Xu Long , Li Jun , Li Fengming , Zhao Peng , Wang Weizhen , Qu Minglong , Chen Chen , Yao Lei

{"title":"Longitudinal-radial composite spherical shell ultrasonic transducer with omnidirectional ultrasonic radiation","authors":"Zhang Haidao , Xu Long , Li Jun , Li Fengming , Zhao Peng , Wang Weizhen , Qu Minglong , Chen Chen , Yao Lei","doi":"10.1016/j.ultras.2025.107597","DOIUrl":"10.1016/j.ultras.2025.107597","url":null,"abstract":"<div><div>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. Theoretical analysis was conducted using electromechanical equivalent circuits derived for both the metal spherical shell and the composite transducer. Numerical simulations were employed to investigate the vibrational characteristics, including the displacement distribution and resonance frequency. The transducer was subsequently designed and fabricated, with experimental measurements performed to evaluate its vibration characteristics and radiated acoustic field. The experimental results demonstrate good consistency with both analytical predictions and numerical simulations, confirming the transducer’s capacity for use in ultrasonic technology requiring extensive radiating surfaces.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"150 ","pages":"Article 107597"},"PeriodicalIF":3.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143445801","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 ultrasonic characterization of fractal-based pore distribution homogeneity with variable observation scales in heterogeneous medium

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-02-07 DOI: 10.1016/j.ultras.2025.107596

Li Lin , Yijia Chen , Zhiyuan Ma , Mingkai Lei

{"title":"Quantitative ultrasonic characterization of fractal-based pore distribution homogeneity with variable observation scales in heterogeneous medium","authors":"Li Lin , Yijia Chen , Zhiyuan Ma , Mingkai Lei","doi":"10.1016/j.ultras.2025.107596","DOIUrl":"10.1016/j.ultras.2025.107596","url":null,"abstract":"<div><div>The characterization of pore distribution homogeneity in heterogeneous medium is difficult due to the lack of quantitative description of homogeneity, and the degree of homogeneity is closely related to measurement method and observation scale. In this paper, a kind of quantitative ultrasonic characterization strategy based on fractal theory, which takes into account the principle of matching observation scale with acoustic beam size, is proposed. The ultrasonic signals containing information about heterogeneous seal coating are extracted through water-immersed ultrasonic pulse-echo reflection method to characterize pore distribution homogeneity. The fractal dimension <em>D</em> and multifractal spectral symmetry <em>B</em> are specifically used to parameterize pore distribution homogeneity of microscopic images within acoustic beam size. By establishing simulation models combined with experimental microscopic images, the effects of pore number and size distribution on ultrasonic attenuation coefficient <em>α</em> are analyzed. Furthermore, the relationships between attenuation coefficient and the above two fractal parameters are established to quantitatively characterize pore distribution homogeneity with porosity of 1 %∼6 % and scales ranging from several to tens of microns. Finally, correlation coefficient <em>R</em> and root mean square error <em>RMSE</em> of the attenuation coefficient varying with two fractal parameters at variable observation scales of 3 mm, 2 mm, 1 mm, and 0.5 mm are compared. It should be noticed that considering the principle of matching observation scale with the acoustic beam size is crucial for quantitative ultrasonic characterization of fractal-based pore distribution homogeneity in heterogeneous medium. And the observation scale should be equal to or larger than acoustic beam size, which is ≥ 2 mm, under the testing conditions in this research.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"149 ","pages":"Article 107596"},"PeriodicalIF":3.8,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143369805","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

An updating kernel density estimation method for guided wave-based quantitative damage diagnosis under vibration conditions

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-02-05 DOI: 10.1016/j.ultras.2025.107594

Sanao Huang , Yan Zhuang , Xueting Sun , Qiang Wang , Qiao Bao

{"title":"An updating kernel density estimation method for guided wave-based quantitative damage diagnosis under vibration conditions","authors":"Sanao Huang , Yan Zhuang , Xueting Sun , Qiang Wang , Qiao Bao","doi":"10.1016/j.ultras.2025.107594","DOIUrl":"10.1016/j.ultras.2025.107594","url":null,"abstract":"<div><div>In practical applications, engineering structures are typically subjected to complex vibrational loads during service, resulting in structural failures and accidents. Guided-wave-based structural health monitoring (SHM) is a promising method to ensure safe operations. However, the propagation of guided waves is sensitive to structural vibrations, which reduces the diagnostic accuracy of guided-wave-based SHM methods. This paper addresses the challenges in SHM under vibration conditions using guided waves and proposes an updating kernel density estimation method for quantitative damage diagnosis. First, this study investigated the impact of various vibration conditions on guided waves and introduced a new damage index: the instantaneous phase synchronization damage index. In addition to the Pearson coefficient damage index, a two-dimensional feature vector was constructed. Based on this, the baseline and updating feature vector sets were established, and the corresponding kernel density was estimated online during damage monitoring. Finally, multi-path distance metrics were employed as a quantitative damage index for diagnosis. The method was verified using an aluminum alloy plate with varying degrees of crack damage under vibration conditions. The experimental results demonstrated that the proposed method can quantitatively monitor damage under different vibration conditions, achieving high accuracy in estimating the crack length.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"149 ","pages":"Article 107594"},"PeriodicalIF":3.8,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376999","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

Combined effect of frequency, grain size, and sound path on phased array ultrasonic spectrum and attenuation

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-02-03 DOI: 10.1016/j.ultras.2025.107593

Yu Liu , Qiang Tian , Shuzeng Zhang , Xuefei Guan

{"title":"Combined effect of frequency, grain size, and sound path on phased array ultrasonic spectrum and attenuation","authors":"Yu Liu , Qiang Tian , Shuzeng Zhang , Xuefei Guan","doi":"10.1016/j.ultras.2025.107593","DOIUrl":"10.1016/j.ultras.2025.107593","url":null,"abstract":"<div><div>Phased array ultrasonic attenuation method has received increasing attention and application in material characterization. However, the combined effect of frequency, grain size, and sound path on the phased array ultrasonic spectrum and attenuation has not been precisely understood. In this study, this combined effect is identified. An experimental strategy and an attenuation coefficient correction method are proposed. A set of Ni-based alloys with varying grain sizes and thicknesses, known as GH4742, is utilized for experimental investigations. Two 5 MHz and 10 MHz nominal frequency phased array probes are used for the back-wall echo acquisition. The results show that the spectral shift and attenuation coefficient are not the simple linear relationship with the sound path. The higher diffraction losses in the far field are close and tend to constant in the range of high frequency. The interface loss and other measurement factors in phased array ultrasound account for more than 60% of the total attenuation in the fine-grain material. Compared with the scattered model, the reference specimen calibration method can also effectively correct the experimental attenuation coefficient.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"149 ","pages":"Article 107593"},"PeriodicalIF":3.8,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143350902","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 paraxial beam solution for ultrasonic guided waves in anisotropic elastic plates

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-02-03 DOI: 10.1016/j.ultras.2025.107588

Taizo Maruyama , Sumika Yamada , Akira Furukawa

{"title":"A paraxial beam solution for ultrasonic guided waves in anisotropic elastic plates","authors":"Taizo Maruyama , Sumika Yamada , Akira Furukawa","doi":"10.1016/j.ultras.2025.107588","DOIUrl":"10.1016/j.ultras.2025.107588","url":null,"abstract":"<div><div>A paraxial approximation of angular spectrum representation is proposed for the construction of ultrasonic beam solutions for guided waves in anisotropic elastic plates. The angular spectrum representation used in this work is the exact integral form describing the superposition of plane guided waves with respect to the angular direction wavenumber. The approximate integral form is derived from the angular spectrum representation using the small angle approximation. Employing an inclined in-plane coordinate system shows that the approximate integral form describes the beam solution propagating in a direction inclined relative to the wavenumber direction by a skew angle. This approach demonstrates that the skew angle can be expressed as the derivative of the wavenumber with respect to the angle. Because the amplitude function for the approximate integral form is governed by the two-dimensional Helmholtz equation, the proposed formulation can accommodate the conventional beam modes developed in the field of optics. On this basis, a paraxial Gaussian beam solution is derived for anisotropic elastic plates in an explicit form and verified based on comparison with the numerical solution for the angular spectrum representation. The present work confirms that diffraction effects on the ultrasonic beam are greatly modified by the skew angle profile.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"149 ","pages":"Article 107588"},"PeriodicalIF":3.8,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143317371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Debonding damage detection in CFRP-reinforced steel structures using scanning probabilistic imaging method improved by ultrasonic guided-wave transfer function

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-02-02 DOI: 10.1016/j.ultras.2025.107592

Yonghui An , Chaozhi Pang , Ranting Cui , Jinping Ou

{"title":"Debonding damage detection in CFRP-reinforced steel structures using scanning probabilistic imaging method improved by ultrasonic guided-wave transfer function","authors":"Yonghui An , Chaozhi Pang , Ranting Cui , Jinping Ou","doi":"10.1016/j.ultras.2025.107592","DOIUrl":"10.1016/j.ultras.2025.107592","url":null,"abstract":"<div><div>The application of Carbon Fiber Reinforced Polymer (CFRP) in reinforcing steel structures is widely recognized. However, there is relatively little research on the localization and imaging of debonding damage in CFRP-reinforced steel structures. This paper proposes a probabilistic imaging method improved by ultrasonic guided-wave transfer function to localize debonding damage in CFRP-reinforced steel structures. Firstly, this study proposes a waveform feature index that exhibits strong robustness against debonding damages while exhibiting minimal susceptibility to environmental disturbances, which enhances the detection capability for small-scale debonding damages compared to traditional linear indices. Secondly, the proposed method replaces the conventional fixed array with a dynamic scanning approach. This method achieves 2D debonding damage imaging by leveraging information solely from orthogonal directions, which not only drastically reduces the number of sensors but also enables flexible adjustment of the detection area, thereby enhancing its applicability. Thirdly, the proposed waveform feature index is independent of the amplitude of the excitation/receiving signal. Therefore, the proposed method maintains accurate localization of debonding damage during damage imaging detection, regardless of variations in coupling conditions between the sensor and the structure under inspection. The efficacy of the proposed method is validated through comprehensive numerical simulations and experiments. The results demonstrate its ability to accurately detect and localize damage in CFRP-reinforced steel plate structures, offering an effective and precise way for early debonding detection.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"149 ","pages":"Article 107592"},"PeriodicalIF":3.8,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143369804","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

Numerical investigation on the oscillation performance of an acoustically suspended plate using flexural vibration

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-02-01 DOI: 10.1016/j.ultras.2025.107591

Yuanyuan Liu , Xiaodong Sun , Zilong Zhao , Lin Geng

{"title":"Numerical investigation on the oscillation performance of an acoustically suspended plate using flexural vibration","authors":"Yuanyuan Liu , Xiaodong Sun , Zilong Zhao , Lin Geng","doi":"10.1016/j.ultras.2025.107591","DOIUrl":"10.1016/j.ultras.2025.107591","url":null,"abstract":"<div><div>Near-field acoustic levitation (NFAL) technology holds significant promise for applications in the manufacturing processes of wafers and other delicate components, owing to its advantages such as compactness, environmental friendliness, and unlimited materials for suspended objects. NFAL relies on high-frequency vibrations to generate the squeeze film that suspends objects, which inherently leads to oscillations of the suspended objects. To date, no research has been conducted to predict the oscillation performance of a suspended object under a flexural radiator. The objective of this study is to address this challenge and thereby expand the application of NFAL in precision fields. First, the pressure and thickness distributions of the squeeze film at steady state are obtained by solving the governing equations using the finite difference method. Subsequently, the stiffness and damping coefficients of the squeeze film are computed by employing the infinitesimal perturbation method. Second, a predictive model for the oscillation displacement of suspended objects is developed based on the transfer function method. The numerical results show good agreement with measurements from the experimental setup constructed for this study. Finally, the results of the parametric study indicate that higher levitation accuracy is achieved with an increased weight of the reflector. Moreover, the influence of the radiator’s vibration amplitude and air temperature on levitation accuracy is found to be limited within certain parameter ranges.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"149 ","pages":"Article 107591"},"PeriodicalIF":3.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143317372","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

Dual-frequency excitation in high-frame-rate ultrasonic backscatter coefficient analysis of hemorheological properties

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-01-30 DOI: 10.1016/j.ultras.2025.107589

Masaaki Omura , Kunimasa Yagi , Ryo Nagaoka , Kenji Yoshida , Tadashi Yamaguchi , Hideyuki Hasegawa

{"title":"Dual-frequency excitation in high-frame-rate ultrasonic backscatter coefficient analysis of hemorheological properties","authors":"Masaaki Omura , Kunimasa Yagi , Ryo Nagaoka , Kenji Yoshida , Tadashi Yamaguchi , Hideyuki Hasegawa","doi":"10.1016/j.ultras.2025.107589","DOIUrl":"10.1016/j.ultras.2025.107589","url":null,"abstract":"<div><div>Hemorheological properties, such as erythrocyte aggregation can be assessed by ultrasonic backscatter coefficient analysis. In this study, a data-acquisition sequence with dual-frequency (dual-<em>f</em>) excitation was proposed to expand the ultrasonic frequency bandwidth with high-frame-rate imaging. The approach was experimentally validated using <em>ex vivo</em> porcine blood measurements and <em>in vivo</em> human imaging. The center frequency of the excitation wave was alternated between 7.8 (<em>f</em><sub>1</sub>) and 12.5 (<em>f</em><sub>2</sub>) MHz in the frequency spectral analysis using the reference phantom method. The frequency spectra revealed that the dual-<em>f</em> sequence achieved a bandwidth of 4.5–15 MHz at −20 dB, almost equivalent to those achieved with conventional single-frequency excitation (5.0–15 MHz) with a short-duration wave at 10 MHz (mono-<em>f</em>) in reference media with the sufficient condition of signal-to-noise ratio. The aggregation and disaggregation states of porcine blood suspended in high-molecular-weight dextran were determined by the isotropic diameter and packing factor using the structure factor size estimator. The discrimination performance of the dual-<em>f</em> approach increased, owing to the broadband frequency responses, in contrast with the limited performance of mono-<em>f</em> due to a low signal-to-noise ratio. This approach incorporating dual-<em>f</em> sequence is beneficial for obtaining robustly frequency spectra of hemorheological properties from <em>in vivo</em> scenarios.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"149 ","pages":"Article 107589"},"PeriodicalIF":3.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of the lens-focused air-coupled ultrasonic transducer for non-destructive testing

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-01-30 DOI: 10.1016/j.ultras.2025.107590

Jinjie Zhou , Qiyun Liu , Xuemin Wang , Yang Zheng

引用次数: 0

Physics-based generative adversarial network for real-time acoustic holography

IF 3.8 2区物理与天体物理

Ultrasonics Pub Date : 2025-01-28 DOI: 10.1016/j.ultras.2025.107583

Qingyi Lu , Chengxi Zhong , Hu Su , Song Liu

{"title":"Physics-based generative adversarial network for real-time acoustic holography","authors":"Qingyi Lu , Chengxi Zhong , Hu Su , Song Liu","doi":"10.1016/j.ultras.2025.107583","DOIUrl":"10.1016/j.ultras.2025.107583","url":null,"abstract":"<div><div>Acoustic holography (AH) encodes the acoustic fields in high dimensions into two-dimensional holograms without information loss. Phase-only holography (POH) modulates only the phase profiles of the encoded hologram, establishing its superiority over alternative modulation schedules due to its information volume and storage efficiency. Moreover, POH implemented by a phased array of transducers (PAT) facilitates active and dynamic manipulation by independently modulating the phase of each transducer. However, existing algorithms for POH calculation suffer from a deficiency in terms of high fidelity and good real-time performance. Thus, a deep learning algorithm reinforced by the physical model, i.e. Angular Spectrum Method (ASM), is proposed to learn the inverse physical mapping from the target field to the source POH. This method comprises a generative adversarial network (GAN) evaluated by soft label, which is referred to as soft-GAN. Furthermore, to avoid the intrinsic limitation of neural networks on high-frequency features, a Y-Net structure is developed with two decoder branches in frequency and spatial domain, respectively. The proposed method achieves the reconstruction performance with a state-of-the-art (SOTA) Peak Signal-to-Noise Ratio (PSNR) of 24.05 dB. Experiment results demonstrated that the POH calculated by the proposed method enables accurate and real-time hologram reconstruction, showing enormous potential for applications.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"149 ","pages":"Article 107583"},"PeriodicalIF":3.8,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143081188","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