Ultrasonics最新文献

{"title":"Low-frequency fiber-optic optoacoustic transducer arrays for large-area high-precision online non-destructive testing","authors":"Yuliang Wu ,&nbsp;Xuelei Fu ,&nbsp;Jiapu Li ,&nbsp;Denghao Chen ,&nbsp;Hongwei Wang ,&nbsp;Shengjiang Yang ,&nbsp;Honghai Wang ,&nbsp;Zhengying Li","doi":"10.1016/j.ultras.2025.107680","DOIUrl":"10.1016/j.ultras.2025.107680","url":null,"abstract":"<div><div>In Fiber-optic optoacoustic (FO-OA) non-destructive testing (NDT), expanding the ultrasonic detection range remains a critical challenge for large-area applications. While extending the detection range to larger scales necessitates addressing issues related to ultrasound intensity and propagation losses. Recent efforts have focused on enhancing ultrasound intensity, while methods to further extend the detection range by reducing ultrasound propagation losses are highly significant for ultrasonic NDT. This study introduces a frequency-selective functional layer in ultrasound transducers to effectively lower the ultrasound frequency. By incorporating polyethylene (PE) particles into the thermally expandable material to form the functional layer that enhances the attenuation of high-frequency components, the central ultrasound frequency is reduced from 1 MHz to 0.3 MHz. This approach expanded the detection area of the flat plate structure to 90 × 54 cm². A 6-element FO-OA transducer array was fabricated on a single optical fiber, enabling the successful localization of all defects on the specimen with a positioning error of &lt;0.894 cm. These parameters demonstrate state-of-the-art performance in optoacoustic NDT for the tested configurations. This work demonstrates that the frequency reduction method effectively mitigates the missed detection issues arising from the limited inspection range. Further, testing on a thick specimen (30 × 30 × 1.5 cm³) also yielded a low positioning error of 0.781 cm, even with multiple ultrasound propagation modes, indicating that the ultrasound with PE particles offers superior immunity to multimodal aliasing, providing a robust solution for complex media.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"154 ","pages":"Article 107680"},"PeriodicalIF":3.8,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936271","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}

{"title":"Modeling of ultrasonic velocity and attenuation for concrete inspection: a review","authors":"Michel Darmon ,&nbsp;Nouhayla Khalid ,&nbsp;Manda Ramaniraka ,&nbsp;Vincent Dorval ,&nbsp;Jean-Marie Henault ,&nbsp;Jean-François Chaix","doi":"10.1016/j.ultras.2025.107690","DOIUrl":"10.1016/j.ultras.2025.107690","url":null,"abstract":"<div><div>A review of advances in modeling for concrete ultrasonic inspection is proposed. Various well-known (Non-Destructive Evaluation) NDE methods based on different principles are usually used to assess the integrity of concrete structures. Classical ultrasonic techniques usually exploit the coherent transmitted wave propagating through the concrete and can be classified as methods using linear acoustics. The multiple scattering approaches (both analytical and numerical) for modeling this coherent wave have been reviewed, as well as their existing validations. Such validations in two dimensions highlight the need to consider in modeling with a finer attention the correlation between scatterers and the actual dimensionality of the problem. The state of the art related to the influence in modeling of the Interfacial Transition Zone (ITZ) – the thin porous layer surrounding each aggregate – and of the porosity is also reviewed for the case of sound (undamaged) concrete. Finally, different perspectives of modeling strategies are discussed.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"154 ","pages":"Article 107690"},"PeriodicalIF":3.8,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089962","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}

{"title":"Ultrasound scatteromics: A multimodal QUS-based solution for detecting ambulatory function deterioration in Duchenne muscular dystrophy","authors":"Ya-Wen Chuang ,&nbsp;Chia-Wei Lin ,&nbsp;Wen-Chin Weng ,&nbsp;Po-Hsiang Tsui","doi":"10.1016/j.ultras.2025.107679","DOIUrl":"10.1016/j.ultras.2025.107679","url":null,"abstract":"<div><div>Quantitative ultrasound (QUS) envelope statistics imaging has been investigated as a non-invasive method for evaluating Duchenne muscular dystrophy (DMD). This study introduces an ultrasound scatteromics approach to differentiate between early and late ambulatory stages of DMD. A total of 47 DMD subjects were divided into early (<em>n</em> = 23) and late (<em>n</em> = 24) ambulatory stages. Ultrasound images of the gastrocnemius muscle were acquired and processed to generate multimodal QUS envelope statistics images based on the Nakagami distribution parameter <em>m</em>, homodyned K-distribution parameters <em>α</em> and <em>k</em>, and information entropy <em>H</em>. A simplified feature set based on first-order statistical features of each QUS envelope statistics image was then used for classification with support vector machine (SVM), random forest (RF), and linear discriminant analysis (LDA). A total of 30 iterations of five-fold cross-validation, along with the area under the receiver operating characteristic curve (AUROC), were used for model evaluation. Individual QUS envelope statistics parameters produced average AUROC values below 0.7. Scatteromics achieved average AUROC values of 0.97, 0.98, and 0.83 for SVM, RF, and LDA models, respectively. The simplified scatteromics models, using <em>m</em>, <em>α</em>, <em>k</em>, and <em>H</em> as input to SVM, RF, and LDA, yielded average AUROC values of 0.98, 0.98, and 0.88, respectively. The scatteromics approach outperformed individual QUS envelope statistics imaging methods in monitoring ambulatory function deterioration in DMD in clinical settings (<em>p</em> &lt; 0.05 for AUROC comparisons, DeLong test).</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"154 ","pages":"Article 107679"},"PeriodicalIF":3.8,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936273","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}

{"title":"Compressed sensing in concrete pipes with elastic waves","authors":"Arun P. Jaganathan,&nbsp;Rohollah Taslimian","doi":"10.1016/j.ultras.2025.107667","DOIUrl":"10.1016/j.ultras.2025.107667","url":null,"abstract":"<div><div>This paper presents compressed sensing (CS) for non-destructive characterization of concrete pipes utilizing elastic guided waves. In the conventional multichannel analysis of surface wave method (MASW), unknown geometric and elastic properties of a pipe are estimated by mathematically inverting dispersion curves measured over the pipe. While this is a well-established technique, several practical challenges exists during implementation. For example, wave record is captured using a densely packed receiver array to satisfy the Nyquist sampling theorem, which leads to large element count. This paper develops CS based signal acquisition strategy using sparse sub-Nyquist array that is randomly arranged over the pipe. Results show that high quality multi-modal dispersion images of different pipe modes could be recovered from such sparse datasets. Finally, the modal curves are mathematically inverted using wave theory based forward models, and the unknown parameters of the pipe are calculated. The results are validated using data obtained using an independent NDT method. The proposed approach is verified using longitudinal <span><math><mrow><mi>L</mi><mrow><mo>(</mo><mi>n</mi><mo>,</mo><mi>m</mi><mo>)</mo></mrow></mrow></math></span> modes and circumferential Lamb type modes (<span><math><mrow><mi>C</mi><mi>L</mi><mi>T</mi></mrow></math></span>) modes. Investigations are conducted using synthetic and measured datasets. Overall, the proposed approach enhances the conventional MASW technique and improves productivity.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"154 ","pages":"Article 107667"},"PeriodicalIF":3.8,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943442","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}

{"title":"Flexural mode NRUS: Theory","authors":"J.-Y. Kim","doi":"10.1016/j.ultras.2025.107669","DOIUrl":"10.1016/j.ultras.2025.107669","url":null,"abstract":"<div><div>Nonlinear resonant ultrasound spectroscopy (NRUS) has been widely utilized for detecting substructural damage and characterizing strain-dependent properties of materials. While the longitudinal resonance of well-prepared specimens has been predominantly used, flexural and torsional resonances have also been explored recently. The objective of this paper is to provide a formal analysis of the flexural vibration of a slender beam with nonlinear hysteresis, serving as a model for a flexural mode NRUS experiment. The Davidenkov hysteresis function is employed to describe hysteretic motions, enabling the explanation of the experimentally observed nonlinear dependence of resonance frequency shifts on strain. Classical nonlinearities are also considered to obtain more general formulae for the resonance frequency shift and the increase in damping capacity with strain, which can be used to experimentally determine the hysteresis parameters. Additionally, it is shown that the classical quadratic and cubic nonlinearity parameters can be derived from NRUS experiments. The origins of strain-dependent behaviors of hysteretic nonlinear materials are clarified through the derivation of quasi-static backbone curves. Finally, the processing of transient vibration signals from impact-based nonlinear resonance experimental techniques is discussed. It is emphasized that calibrating the measured transducer signals into physical quantities (strain or acceleration signals) is crucial for obtaining absolute hysteresis parameters. It is because the signals from a nonlinear system are not scale-invariant, unlike those from a linear system.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"154 ","pages":"Article 107669"},"PeriodicalIF":3.8,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143906254","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}

{"title":"Investigation of striped acoustic field modulation in microchannels based on holographic acoustofluidic chips","authors":"Luming Li ,&nbsp;Mingyong Zhou ,&nbsp;Lei Huang ,&nbsp;Kai Luo ,&nbsp;Linghan Shen ,&nbsp;Bingyan Jiang","doi":"10.1016/j.ultras.2025.107685","DOIUrl":"10.1016/j.ultras.2025.107685","url":null,"abstract":"<div><div>Accurate modulation of striped standing wave acoustic field in microchannels is of great significance for applications in biochemistry. In this work, the regulatory mechanism of the striped acoustic field in microchannels modulated by a holographic acoustofluidic chip with oblique microstructures was investigated. The effects of microstructure and acoustic wave parameters on the spacing of acoustic pressure node lines were studied. The error between the simulated and experimental results was less than 5 %. A mathematical model was established and confirmed to regulate the acoustic pressure node line spacing. The spacing of acoustic pressure node lines is found to be negatively correlated with both the inclination angle of the microstructure and the frequency of the incident wave. By selecting appropriate values for the inclination angle and frequency based on modulation effects and application requirements, a regulatory scope of approximately 55–250 μm for the acoustic pressure node line spacing can be achieved in microchannel. The model established and the conclusions drawn from this work can provide valuable guidance for particle sorting, analysis, and tissue engineering applications based on acoustofluidic chips.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"154 ","pages":"Article 107685"},"PeriodicalIF":3.8,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918225","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}

{"title":"High frequency ultrasound 2D array design and fabrication with 3D printed interposers at 200 μm pitch","authors":"Yizhe Sun ,&nbsp;Robert Wodnicki ,&nbsp;Xin Sun ,&nbsp;Haochen Kang ,&nbsp;Baoqiang Liu ,&nbsp;U-Wai Lok ,&nbsp;Shigao Chen ,&nbsp;Qifa Zhou","doi":"10.1016/j.ultras.2025.107674","DOIUrl":"10.1016/j.ultras.2025.107674","url":null,"abstract":"<div><div>High-frequency 2D ultrasound arrays (10–50 MHz) can adjust the focus position in three-dimensional space to produce highly focused beams and have potential use in ultrasound elastography and ophthalmology applications. However, these applications remain unfulfilled due to the difficulty in realizing the array element pitch requirements of high-frequency ultrasound 2D arrays with existing technologies. In recent years, the rapid development of 3D printing technology has made complex and fine structures possible. By utilizing high-resolution 3D printing technology, we can effectively solve the connection problem between circuits and acoustic modules in the ultrasound 2D array fabrication process, making it possible to fabricate high-frequency ultrasound 2D arrays.</div><div>In this work, we demonstrate two alternative fabrication processes for high-frequency 2D ultrasound arrays with a realized pitch of 200 µm and 256 elements per array. The fabricated arrays achieved a yield of 82 % and 75 %, with an average fractional bandwidth of 43 %. The element-to-element variability in bandwidth was 18 %, which reflects the inherent challenges of fine-pitch high-frequency array fabrication. These results highlight the feasibility of scalable fabrication techniques while identifying areas for future optimization.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"154 ","pages":"Article 107674"},"PeriodicalIF":3.8,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936270","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}

{"title":"Picosecond laser ultrasonic imaging detection of near-surface micro defects using PCS and SAFT algorithm","authors":"Kangwen Huang ,&nbsp;Xiaokai Wang ,&nbsp;Shutong Dai ,&nbsp;Yu Peng ,&nbsp;Yan Zeng ,&nbsp;Lin Hua ,&nbsp;Shanyue Guan","doi":"10.1016/j.ultras.2025.107672","DOIUrl":"10.1016/j.ultras.2025.107672","url":null,"abstract":"<div><div>The effective detection and imaging of near-surface micro defects has been the key problem in the ultrasonic inspection field for a long time. Laser ultrasound has high resolution and sensitivity which is the effective technology to detect micro defects. In this paper, the time and frequency domain characteristics of the picosecond laser ultrasound and the interaction mechanism between micro defects and ultrasonic waves are studied by simulation and experiment. A picosecond pulsed laser is used to excite ultrasonic waves in samples with near-surface micro defects of different depths, and the propagating ultrasonic waves are detected by an optical interferometer. Through the analysis of the experimental results, the near-surface micro defects with diameters of 0.13 mm and depths of 0.3 mm, 0.5 mm, 1 mm and 2 mm can be detected. In addition, a defect imaging algorithm combining principal component subtraction (PCS) and synthetic aperture focusing technique (SAFT) is proposed, which can effectively suppress the detection blind areas and artifacts caused by Rayleigh (R)-wave interference. Compared with the conventional total focusing method (TFM) of water-immersion ultrasound, the average SNR is increased by 25.57 dB. This research is poised to contribute to the resolution of quality assessment challenges in product manufacturing and service processes.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"155 ","pages":"Article 107672"},"PeriodicalIF":3.8,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222381","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}

{"title":"Adaptive Doppler blood flow estimation in ultrasound with enhanced spectral resolution and contrast using limited observation windows","authors":"Seyed Mohammad Mahdi Tabatabaei Majd,&nbsp;Leila Eslami,&nbsp;Babak Mohammadzadeh Asl","doi":"10.1016/j.ultras.2025.107678","DOIUrl":"10.1016/j.ultras.2025.107678","url":null,"abstract":"<div><div>Measuring blood velocities during the acceleration and deceleration phases of the systolic period can be challenging due to the trade-off between spectral and temporal resolution. This can significantly affect the accuracy of spectrogram reproduction. When temporal samples are reduced, the spectral width may broaden over time, especially during systole. Additionally, shorter observation windows negatively impact factors such as frequency resolution and contrast. This study hypothesizes that a more accurate ultrasound spectrogram can be generated using a new blood velocity estimator with a minimal observation window length of <span><math><mrow><mi>N</mi><mo>=</mo><mn>2</mn></mrow></math></span>. The spectrogram’s accuracy is assessed using various criteria, including spectral resolution, contrast, and spectral broadening over time. The proposed adaptive method integrates a new coherence-based post-filter with the Eigenspace-based Forward-Backward Amplitude Spectrum Capon (ESB-FBASC) technique. The method’s performance was evaluated in different conditions, including simulations of the femoral artery, stationary and complex flow, and <em>in vivo</em> data. Under rapid flow conditions simulated over three heartbeats in 0.2 s, the proposed method demonstrated better temporal resolution compared to the Welch-Ref estimator, effectively capturing rapid velocity changes and reducing spectral broadening, despite using only <span><math><mrow><mi>N</mi><mo>=</mo><mn>2</mn></mrow></math></span> slow-time samples. For clinical data on the hepatic vein, the proposed estimator improved spectral resolution by 24 %, 44 %, and 67 %, and increased contrast by 79.8 dB, 120.8 dB, and 155.5 dB compared to MASC, Pr.Capon, and Capon, respectively, for <span><math><mrow><mi>N</mi><mo>=</mo><mn>2</mn></mrow></math></span>. Furthermore, the narrowest power spectrum width at 40 dB was achieved with the proposed method, showing an improvement of 38 % and 75 % compared to MASC and Pr.Capon, respectively. As a result, the proposed method effectively reduces power spectrum width and enhances spectrogram accuracy by improving spectral resolution and contrast, all while using the limited observation window length of <span><math><mrow><mi>N</mi><mo>=</mo><mn>2</mn></mrow></math></span>.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"154 ","pages":"Article 107678"},"PeriodicalIF":3.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929034","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}

{"title":"Macro and micro delamination detection in adhesive structures: A synthesized linear and nonlinear air-coupled ultrasonic technique","authors":"Shengbo Shan ,&nbsp;Zheng Li ,&nbsp;Qingzhao Kong ,&nbsp;Li Cheng","doi":"10.1016/j.ultras.2025.107675","DOIUrl":"10.1016/j.ultras.2025.107675","url":null,"abstract":"<div><div>Adhesive structures are widely used in industries. During manufacturing and operation, both macro and micro delamination between different materials or layers may occur within these structures. Despite the practical use of air-coupled ultrasonic testing (ACUT) techniques for detecting such delamination, the interaction mechanisms between elastic waves generated by air-coupled transducers and these two types of delamination have not yet been fully understood. Additionally, there is a lack of accurate identification methods for either macro or micro delamination. To address these issues, this study proposes a synthesized linear and nonlinear ACUT approach for detecting and identifying both types of delamination in adhesive structures. Using finite element simulations with a coupled ACUT model, the study thoroughly examines the interaction between ACUT-induced elastic waves and the delamination types. The results show that macro delamination causes wave reflection and transmission, while micro delamination leads to contact acoustic nonlinearity. The proposed method is validated through experiments and shown to be effective for detecting and identifying both types of delamination. The results of the study contribute to the advancement of ACUT theory and applications, elucidate complex wave features and pave the way for more sophisticated non-destructive evaluation techniques.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"154 ","pages":"Article 107675"},"PeriodicalIF":3.8,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900377","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}