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Ultrasonic backscattering model for Rayleigh waves in polycrystals with Born and independent scattering approximations Ultrasonics (IF 4.2) Pub Date : 2024-03-14 Shan Li, Ming Huang, Yongfeng Song, Bo Lan, Xiongbing Li
This paper presents theoretical and numerical models for the backscattering of 2D Rayleigh waves in single-phase, untextured polycrystalline materials with statistically equiaxed grains. The theoretical model, based on our prior inclusion-induced Rayleigh wave scattering model and the independent scattering approximation, considers single scattering of Rayleigh-to-Rayleigh (R-R) waves. The numerical
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Meta-structure enhanced second harmonic S0 waves for material microstructural changes monitoring Ultrasonics (IF 4.2) Pub Date : 2024-03-12 Ze Liu, Shengbo Shan, Li Cheng
Cumulative second harmonic Lamb waves in nonlinear media feature increasing amplitudes with propagation distance, conducive to the monitoring of material microstructural changes in structures. The phenomenon can be readily generated by zero-order symmetric (S0) mode waves in the low-frequency range. However, in a practical piezoelectric-transducer-activated system, both S0 and A0 (zero-order antisymmetric)
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A Single Crystal Row–Column-Array for 3D Ultrasound Imaging Ultrasonics (IF 4.2) Pub Date : 2024-03-11 Guo Li, Qiandong Sun, Yapeng Fu, Shilin Hou, Jiaming Zhang, K.L. Xu, J.Y. Dai
In vivo 3D ultrasound imaging with 2D-array transducers is of great importance for both clinical application and biomedical research, but it is complicated in fabrication and also very expensive in hardware due to thousands of electronic channels. In this work, we demonstrate a new fabrication process of 7-MHz 128+128 elements row-column-array (RCA) transducer with relaxor ferroelectric PMN-0.28PT
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Study of thermal effects induced by the high-frequency probing laser in nonlinear opto-acoustic frequency-mixing technique Ultrasonics (IF 4.2) Pub Date : 2024-03-11 Ling Yuan, Chenyin Ni, Yi-Fei Zhang, Hong-Chao Zhang, Zhong-Hua Shen
Photo-thermal modulation-based nonlinear opto-acoustic frequency-mixing technique is an effective method for detecting micro-cracks. When using this technique for micro-crack detection, the selection of laser source parameters is particularly crucial. Compared to traditional piezo-transducer-based mixing techniques, the characteristic of using a laser as the detection source is the presence of thermal
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Energy focusing of broadband Lamb wave by designing excitation waveforms and elastic metamaterials Ultrasonics (IF 4.2) Pub Date : 2024-03-11 Daiyao Du, Jiadong Hua, Chun Cui, Jing Lin
In the field of structure health monitoring (SHM), the use of Lamb wave to locate damage is a common method. Energy focusing is beneficial for damage localization because of higher SNR and higher resolution. Optimization design of elastic metamaterials is promising for energy focusing based on speed modulation. However, current design scheme is effective only for narrowband Lamb waves. Compared to
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Ultrasonic detection method based on flexible capillary water column arrays coupling Ultrasonics (IF 4.2) Pub Date : 2024-03-08 Kai Wang, Yini Song, Yihua Kang, Yizhou Guo, Hongbao Ma, Shengping Wu, Jin Yang
Conventional water immersion ultrasonic testing faces limitations due to factors such as environmental conditions, workpiece dimensions, corrosion, and resource wastage. Contact-based coupling methods, which employ coupling media or specific coupling structures, offer a convenient approach to coupling acoustic waves and reduce signal attenuation. However, these methods are time-sensitive and lack adaptability
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Optoacoustic interferometric characterization system (OPTICS) for the evaluation of fuel quality through speed of sound measurements Ultrasonics (IF 4.2) Pub Date : 2024-03-06 George J. Tserevelakis, Charalampos Astrinakis, Giannis Zacharakis
Ultrasonic techniques have been applied to assess crucial physical parameters in various types of fuels including the speed of sound (SoS), the bulk modulus and the acoustic attenuation coefficient. Such investigations may have important practical significance as the knowledge of fuel properties is directly related to the analysis of combustion characteristics, engine’s overall performance and exhaust
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Ultrasonic liquid level detection method based on the variation of reflected energy on the inner wall of a container Ultrasonics (IF 4.2) Pub Date : 2024-03-06 Tiaotiao Zhang, Xiping He, Yu Liu, Bin Li
Liquid level detection plays an important role in industry. For the liquid level detection of flammable, explosive and volatile liquids, the detection method based on the ultrasonic principle is usually adopted. Though a lot of efforts, the detection precision is still challenging. Herein, Ultrasonic liquid level detection method is studied to address the detection precision. A projection model of
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Shear horizontal waves in a multiferroic composite semiconductor structure Ultrasonics (IF 4.2) Pub Date : 2024-03-02 Lei Yang, Enrico Zappino, Erasmo Carrera, Jianke Du
Piezoelectric semiconductors (PSs) possess the physical properties of piezoelectric and semiconductor simultaneously. When a piezomagnetic (PM) material is added to the PS, the composite structures will exhibit the comprehensive mageto-electro-semiconductive (MES) coupling effects. In this paper, the propagation characteristics of shear horizontal (SH) waves in a multiferroic composite semiconductor
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Increasing abdominal aortic aneurysm curvature visibility using 3D dual probe bistatic ultrasound imaging combined with probe translation Ultrasonics (IF 4.2) Pub Date : 2024-03-02 Larissa C. Jansen, Stein Fekkes, Hans-Martin Schwab, Richard G.P. Lopata
High frame rate ultrasound (US) imaging techniques in 3D are promising tools for capturing abdominal aortic aneurysms (AAAs) over time, however, with the limited number of channel-to-element connections current footprints are small, which limits the field of view. Moreover, the maximal steering angle of the ultrasound beams in transmit and the maximal receptance angle in receive are insufficient for
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Simultaneous photoacoustic and ultrasound imaging: A review Ultrasonics (IF 4.2) Pub Date : 2024-02-28 Yinshi Yu, Ting Feng, Haixia Qiu, Ying Gu, Qian Chen, Chao Zuo, Haigang Ma
Photoacoustic imaging (PAI) is an emerging biomedical imaging technique that combines the advantages of optical and ultrasound imaging, enabling the generation of images with both optical resolution and acoustic penetration depth. By leveraging similar signal acquisition and processing methods, the integration of photoacoustic and ultrasound imaging has introduced a novel hybrid imaging modality suitable
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Acoustic shadow zone of the guided wave in a variable thickness plate Ultrasonics (IF 4.2) Pub Date : 2024-02-27 Zhiyuan Zhang, Bing Li, Yanqi Wang
This paper calculates the acoustic shadow zone of the guided wave in a variable thickness plate. The variable thickness plate has a wide range of applications in bridges, ships, etc., and the guided wave is often used for its nondestructive testing. The velocity gradient induced by thickness variations will deflect the guided wave towards lower phase velocities. Both frequency and thickness variation
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Multiple ultrasonic parametric imaging for the detection and monitoring of high-intensity focused ultrasound ablation Ultrasonics (IF 4.2) Pub Date : 2024-02-27 Guang Yang, Jing Liu, Beiru Yang, Junfeng Guo, Chenxiaoyue Wu, Bo Zhang, Siyuan Zhang
Numerous quantitative ultrasound imaging techniques have demonstrated superior monitoring performance for thermal ablation when compared to conventional ultrasonic B-mode imaging. However, the absence of comparative studies involving various quantitative ultrasound imaging techniques hinders further clinical exploration. In this study, we simultaneously reconstructed ultrasonic Nakagami imaging, ultrasonic
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A layer discrete particle based soft contact model in corroded rebar monitoring using linear and nonlinear ultrasonic guided waves Ultrasonics (IF 4.2) Pub Date : 2024-02-20 Shi Yan, Xuenan Wang, Ruifeng Zhu
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Acoustic source localization in composite plates using Sideband Peak Count – Index technique Ultrasonics (IF 4.2) Pub Date : 2024-02-19 H. Alnuaimi, U. Amjad, T. Kundu
In this study the Non-Linear Ultrasonic Sideband Peak Count-Index (SPC-I) technique is used as the foundation for anovel approach towards acoustic source localization (ASL) in orthotropic composite plates. The SPC-I based technique proposed here does not require the signal attenuation information or any knowledge on the time of arrival of the signal. It should be noted that since individual sensors
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Modal displacement analyses of Lamb waves in micro/nano-plates based on the consistent couple stress theory Ultrasonics (IF 4.2) Pub Date : 2024-02-18 Hai Huang, Wei Guan, Xiao He
In micro-scale structures, the influence of scale effects on the mechanical properties cannot be ignored, and the continuum mechanics theory cannot effectively describe guided wave propagation. This paper studies modal displacements in an isotropic micro/nano-scale plate — an essential factor for the mode selection of Lamb waves in non-destructive testing technology. To achieve this, the consistent
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Excitation characteristics of circumferential SH guided waves in steel pipes generated by EMATs with few-cycle PPM Ultrasonics (IF 4.2) Pub Date : 2024-02-18 Hongyuan Zhang, Xiaokang Yin, Longhui Ma, Gaofeng Ma, Kunsan Shi, Ziheng Zhang, Xin'an Yuan, Wei Li
Circumferential Shear Horizontal (CSH) guided waves provide an effective method for detecting defects like axial cracks and corrosion in pipes. Periodic Permanent Magnet Electromagnetic Acoustic Transducers (PPM EMATs) are typically used to generate CSH guided waves. However, there is an offset problem to which little attention has been paid. The offset problem refers to the offset of the center (position
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Investigation of fatigue crack closure effects on the evaluation of edge cracks with the fundamental mode of edge waves Ultrasonics (IF 4.2) Pub Date : 2024-02-16 Hankai Zhu, Andrei Kotousov, Ching Tai Ng
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Suppression of the height deviation on metal bumps manufacturing by an ultrasonic vibration control Ultrasonics (IF 4.2) Pub Date : 2024-02-16 Yuming Feng, Yingxiang Liu, Jie Deng, Junkao Liu
On-demand droplet printing based on piezoelectric micro-jet device (PMJD) is considered a flexible and high-precision method to generate metal droplets directly for flip-chip bonding in industrial electronics. However, the quality of flip-chip bonding is closely related to the height deviation of the solidified droplets (the metal bumps), which is influenced by the complicated hydrodynamics of impacting
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Deep learning based ultrasonic reconstruction of rough surface morphology Ultrasonics (IF 4.2) Pub Date : 2024-02-13 Zhengjun Wang, Fan Shi, Fangxin Zou
This paper introduces a methodology to recover the morphology of a complex rough surface from ultrasonic pulse echo measurements with an array of equidistant sensors using the one dimensional convolution neural network (1DCNN). The neural network is trained by the datasets simulated from high-fidelity finite element simulations for surfaces with a range of roughness parameters and is tested on both
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Comparisons of the acoustic radiation force of ultrasonic standing waves in half-wavelength and quarter-wavelength micro-resonators of cylindrical geometry Ultrasonics (IF 4.2) Pub Date : 2024-02-13 In-Hwan Yang, Nahae Kim
Ultrasonic standing waves with specific wavelengths generated in the multi-layered micro-resonators were numerically and experimentally analyzed. Using a three-dimensional scanning fluorescence microscope, the acoustophoretic motion of fluorescent microparticles within the micro-resonators was carefully and accurately measured. The manufactured micro-resonators were validated by comparing the location
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B-mode ultrasound to elastography synthesis using multiscale learning Ultrasonics (IF 4.2) Pub Date : 2024-02-13 Fei Dai, Yifang Li, Yunkai Zhu, Boyi Li, Qinzhen Shi, Yaqing Chen, Dean Ta
Elastography is a promising diagnostic tool that measures the hardness of tissues, and it has been used in clinics for detecting lesion progress, such as benign and malignant tumors. However, due to the high cost of examination and limited availability of elastic ultrasound devices, elastography is not widely used in primary medical facilities in rural areas. To address this issue, a deep learning
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Characterization of three-dimensional surface-breaking slots based on regression analysis of ultrasonic Rayleigh wave simulations Ultrasonics (IF 4.2) Pub Date : 2024-02-10 Shengyuan Zhang, Zheng Fan
Rayleigh waves travel along the surface of a solid structure, with most of their energy focusing within a depth of one wavelength. Thus, the reflection coefficient from a surface-breaking crack is highly sensitive to the ratio between the crack depth and the wavelength. It is possible to characterize the depth of surface-breaking cracks by measuring the features in the reflected waves. However, a feature
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The impact of ischemic vascular stenosis on LIPU hyperthermia efficacy investigated Based on in vivo rabbit limb ischemia model Ultrasonics (IF 4.2) Pub Date : 2024-02-10 Chunbing Zhang, Yiyun Wu, Qi Zhang, Meimei Zhang, Dong Zhang
Ischemic diseases due to arterial stenosis or occlusion are common and can have serious consequences if untreated. Therapeutic ultrasound like high-intensity focused ultrasound (HIFU) ablates tissues while low-intensity pulsed ultrasound (LIPU) promotes healing at relatively low temperatures. However, blood vessel cooling effect and reduced flow in ischemia impact temperature distribution and ultrasonic
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Full instantaneous de-icing using extensional modes: The role of architectured and multilayered materials in modes decoupling Ultrasonics (IF 4.2) Pub Date : 2024-02-09 G. Gastaldo, M. Budinger, Y. Rafik, V. Pommier-Budinger, V. Palanque, A. Yaich
Ultrasonic de-icing systems are energy-efficient solutions for ice protection. The systems generate high levels of stress in the ice by inducing vibrations in the substrate, resulting in bulk or adhesive ice failure and, ultimately, ice removal. For this purpose, two types of resonant modes can be excited: flexural and extensional modes. The extensional modes have the interesting ability to de-ice
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A novel waveguide rod with acoustic black hole for acoustic emission signal enhancement and its performance Ultrasonics (IF 4.2) Pub Date : 2024-02-09 Ji Fu, Tian He, Zhenyu Liu, Yue Bao, Xiandong Liu
As an essential auxiliary tool for acoustic emission (AE) detection, waveguide rods are widely used in testing situations where sensors cannot contact the specimens directly, such as high temperature, cryogenic, corrosion, radiation, etc. However, the AE signal attenuation in waveguide rod makes the risk of missing weak acoustic emission events in damage detection, which limits the application of waveguide
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Numerical modeling with experimental verification investigating the effect of various nonlinearities on the sideband peak count-index technique Ultrasonics (IF 4.2) Pub Date : 2024-02-07 Guangdong Zhang, Bo Hu, Hamad Alnuaimi, Umar Amjad, Tribikram Kundu
A newly developed nonlinear ultrasonic (NLU) technique called sideband band peak count-index (or SPC-I) measures the degree of nonlinearity in materials by counting the sideband peaks above a moving threshold line – larger the SPC-I values, higher is the material nonlinearity. In various published papers, the SPC-I technique has shown its effectiveness in structural health monitoring (SHM) applications
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Transcranial ultrasound estimation of viscoelasticity and fluidity in brain tumors aided by transcranial shear waves Ultrasonics (IF 4.2) Pub Date : 2024-02-06 Jianjun Yu, Hao Guo, Xiaoyang Qiao, Liyuan Jiang, Yiran Chen, Jiacheng Liu, Chaoyang Zhang, Xiao Su, Hongmei Zhang, Mingxi Wan
Cerebral diseases, such as brain tumors, are intricately linked to the mechanical properties of brain tissues. Estimating the mechanical properties of brain tumors using transcranial ultrasound is a promising approach. However, the complexity of cranial features introduces challenges, such as ultrasound attenuation and interference from multidirectional transcranial shear waves induced by impact vibrations
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A novel 3D evaluation method for surface defects using broadband laser-generated Rayleigh waves with wavenumber analysis Ultrasonics (IF 4.2) Pub Date : 2024-02-05 Qichao Cheng, Jun He, Shixi Yang, Xin Xiong, Yongshui Luo
To address the issues of large imaging errors for small defects and the difficulty in depth evaluation using local wavenumber estimation for surface defect imaging, a novel three-dimensional (3D) evaluation method for surface defects using broadband laser-generated Rayleigh waves with wavenumber analysis is proposed. A finite element model is established to investigate the interaction between the Rayleigh
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Ultrasonic imaging of delamination in thick CFRP laminates using an energy-compensation reverse time migration method Ultrasonics (IF 4.2) Pub Date : 2024-01-28 Hongjuan Yang, Zhengyan Yang, Sitong Lu, Yinan Shan, Jitong Ma, Lei Yang, Zhanjun Wu
In ultrasonic reflection method, the precision of defect detection in thick carbon fiber reinforced plastics (CFRP) is compromised by acoustic energy attenuation. An energy-compensation reverse time migration (ECRTM) method is proposed to identify multiple defects accurately. Forward and backward wavefields are formed using the finite element method within an anisotropic acoustic model based on the
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Convolutional neural network and level-set spectral element method for ultrasonic imaging of delamination cavities in an anisotropic composite structure Ultrasonics (IF 4.2) Pub Date : 2024-01-30 Boyoung Kim, Shashwat Maharjan, Fazle Mahdi Pranto, Bruno Guidio, Christoph Schaal, Chanseok Jeong
We present a computational approach that incorporates a convolutional neural network (CNN) for detecting internal delamination in a layered 2D plane-strain anisotropic composite structure of transient elastodynamic fields. The two-dimensional spectral element method (SEM) is utilized to simulate the propagation of elastic waves in an orthotropic solid sandwiched by isotropic solids and their interaction
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Ultrasound k-nearest neighbor entropy imaging: Theory, algorithm, and applications Ultrasonics (IF 4.2) Pub Date : 2024-02-02 Sinan Li, Po-Hsiang Tsui, Weiwei Wu, Shuicai Wu, Zhuhuang Zhou
Ultrasound information entropy is a flexible approach for analyzing ultrasound backscattering. Shannon entropy imaging based on probability distribution histograms (PDHs) has been implemented as a promising method for tissue characterization and diagnosis. However, the bin number affects the stability of entropy estimation. In this study, we introduced the -nearest neighbor (KNN) algorithm to estimate
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Can Mn:PIN-PMN-PT piezocrystal replace hard piezoceramic in power ultrasonic devices? Ultrasonics (IF 4.2) Pub Date : 2024-02-02 Xuan Li, Nicola Giuseppe Fenu, Nathan Giles-Donovan, Sandy Cochran, Margaret Lucas
Mn:PIN-PMN-PT piezocrystal is investigated to determine whether its enhanced energy density makes it a candidate transducer material for power ultrasonics applications. To this end, the electromechanical and vibrational characteristics of a simple configuration of a bolted Langevin transducer (BLT) and then an ultrasonic surgical device, both incorporating Mn:PIN-PMN-PT piezocrystal, are compared with
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Deep learning for real-time multi-class segmentation of artefacts in lung ultrasound Ultrasonics (IF 4.2) Pub Date : 2024-01-29 Lewis Howell, Nicola Ingram, Roger Lapham, Adam Morrell, James R. McLaughlan
Lung ultrasound (LUS) has emerged as a safe and cost-effective modality for assessing lung health, particularly during the COVID-19 pandemic. However, interpreting LUS images remains challenging due to its reliance on artefacts, leading to operator variability and limiting its practical uptake. To address this, we propose a deep learning pipeline for multi-class segmentation of objects (ribs, pleural
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Finite element modelling strategy for determining directivity of thermoelastically generated laser ultrasound Ultrasonics (IF 4.2) Pub Date : 2024-01-24 Xin L. Tu, Jie Zhang, Alberto M. Gambaruto, Paul D. Wilcox
Laser ultrasound (LU) is a contactless and couplant-free remote non-destructive (NDE) technique, which uses lasers for ultrasonic generation and detection rather than conventional piezoelectric transducers. For a transducer, an important characteristic is the directivity, the angle-dependent amplitude of the ultrasonic waves generated in the material. In the non-destructive thermoelastic regime, LU
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Piezoelectric-laser ultrasonic inspection and monitoring of thin-walled structure fabricated by directed energy deposition process based on guided waves Ultrasonics (IF 4.2) Pub Date : 2024-01-28 Fuzhen Wen, Shiming Gao, Xu Song, Fan Shi
Thin-walled metallic structures produced by the Directed Energy Deposition (DED) Additive Manufacturing (AM) process are prone to various fabrication defects, which hinder the wider applications of the technique in practice. In-situ inspection and monitoring methodologies are in high demand for improved quality control of printed parts. This paper presents an ultrasonic guided-wave-based method and
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Generation of time-independent torque by ultrasonic guided waves Ultrasonics (IF 4.2) Pub Date : 2024-01-24 I.A. Nedospasov, P.D. Pupyrev, A. Sotnikov, H. Schmidt, M. Weihnacht, A.P. Mayer
The excitation of acoustic waves by a unidirectional transducer, integrated in a piezoelectric cylindrical tube or disk, can lead to a time-independent torque. This phenomenon, demonstrated earlier in experiments and analyzed with coupling-of mode theory, is explained in detail, starting on the level of lattice dynamics of a piezoelectric crystal. Expressions are derived for the stationary torque in
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In-situ sparse-array imaging for through-thickness cracks in plates with A0 Lamb waves and an efficient waveform inversion algorithm Ultrasonics (IF 4.2) Pub Date : 2024-01-17 Shengyuan Zhang, Jinglei Yang, Wenjing Ye
Structural health monitoring (SHM) requires efficient online crack detection and characterization to prevent structural failures, which mainly arise from fatigue cracks. Existing solutions for crack characterization involve analyzing sensed wave signals directly, but these approaches usually require onerous steps or many sensors to obtain sufficient and clear wave packets. An alternative strategy is
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Detection and localization of corrosion using the combination information of multiple Lamb wave modes Ultrasonics (IF 4.2) Pub Date : 2024-01-19 Liping Huang, Zhi Luo, Liang Zeng, Jing Lin
The multi-mode and dispersion nature of Lamb waves means that a variety of modes with individual mode structures and distinct dispersion behaviors would propagate in the structures simultaneously. The existence of a corrosion would result in thickness reduction, which means the frequency-thickness product under a specific excitation would also decrease. Due to dispersion diversity, the interaction
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Investigating the flexural behavior of nanomodified multi-delaminated composites using acoustic emission technique Ultrasonics (IF 4.2) Pub Date : 2024-01-17 Sajad Alimirzaei, Reza Barbaz-Isfahani, Arash Khodaei, Mehdi Ahmadi Najafabadi, Mojtaba Sadighi
The formation of multiple delaminations is a frequently observed damage mechanism in composite materials, exerting a more pronounced influence on their strength properties compared to single delaminations. To tackle this issue, the incorporation of nanoparticles has been investigated as a means to enhance composite materials. This study aims to examine the effects of nano-additives, specifically carbon
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Multi-mode coupled vibration analysis and radiation sound field investigation of a novel multidirectional piezoelectric ultrasonic transducer Ultrasonics (IF 4.2) Pub Date : 2024-01-18 Cheng Chen, Jianzhong Guo, Shuyu Lin
Nowadays, expanding the operating range and realizing multifrequency operation have emerged as focal and imperative objectives in the design of ultrasonic transducers. Due to the limitations of structure and radial sizes, conventional Langevin transducers encounter challenges in meeting the increasingly stringent requirements across diverse ultrasonic applications. Hence, this paper proposes a multidirectional
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Noninvasive assessment of pressure distribution and fractional flow in middle cerebral artery using microbubbles and plane wave in vitro Ultrasonics (IF 4.2) Pub Date : 2024-01-14 Xiaoyang Qiao, Ruiyan Zhang, Jianjun Yu, Yadi Yan, Ayache Bouakaz, Xiao Su, Jiacheng Liu, Yujin Zong, Mingxi Wan
Fractional flow has been proposed for quantifying the degree of functional stenosis in cerebral arteries. Herein, subharmonic aided pressure estimation (SHAPE) combined with plane wave (PW) transmission was employed to noninvasively estimate the pressure distribution and fractional flow in the middle cerebral artery (MCA) in vitro. Consequently, the effects of incident sound pressure (peak negative
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Carbon nanofibers/liquid metal composites for high temperature laser ultrasound Ultrasonics (IF 4.2) Pub Date : 2024-01-13 Nicholas Garcia, Howuk Kim, Kaushik Vinod, Abinash Sahoo, Michael Wax, Taeyang Kim, Tiegang Fang, Venkat Narayanaswamy, Huaiyu Wu, Xiaoning Jiang
As the demand for clean energy becomes greater worldwide, there will also be an increasing demand for next generation nuclear power plants that incorporate advanced sensors and monitoring equipment. A major challenge posed by nuclear power plants is that, during normal operation, the reactor compartment is subjected to high operating temperatures and radiation flux. Diagnostic sensors monitoring such
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Inducing cavitation within hollow cylindrical radially polarized transducers for intravascular applications Ultrasonics (IF 4.2) Pub Date : 2024-01-13 Li Gong, Alex R. Wright, Kullervo Hynynen, David E. Goertz
Thrombotic occlusions of large blood vessels are increasingly treated with catheter based mechanical approaches, one of the most prominent being to employ aspiration to extract clots through a hollow catheter lumen. A central technical challenge for aspiration catheters is to achieve sufficient suction force to overcome the resistance of clot material entering into the distal tip. In this study, we
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Nondestructive corrosion degradation assessment based on asymmetry of guided wave propagation field Ultrasonics (IF 4.2) Pub Date : 2024-01-09 Beata Zima, Emil Roch, Jochen Moll
The article presents the results of numerical and experimental investigation of guided wave propagation in steel plates subjected to corrosion degradation. The development of novel procedures allowing for the assessment of the corrosion degradation level is crucial in the effective diagnostics of offshore and ship structures that are especially subjected to aggressive environments. The study’s main
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Artificial intelligence-based speckle featurization and localization for ultrasound speckle tracking velocimetry Ultrasonics (IF 4.2) Pub Date : 2024-01-11 Hyo Seung Lee, Jun Hong Park, Sang Joon Lee
Deep learning-based super-resolution ultrasound (DL-SRU) framework has been successful in improving spatial resolution and measuring the velocity field information of a blood flows by localizing and tracking speckle signals of red blood cells (RBCs) without using any contrast agents. However, DL-SRU can localize only a small part of the speckle signals of blood flow owing to ambiguity problems encountered
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A comprehensive study of ultrasonic-assisted gas metal arc welding of high-strength steel Ultrasonics (IF 4.2) Pub Date : 2024-01-07 Abbas Pak, Hamid Shams, Hamid Reza Rezaei Ashtiani, Yahya Choopani
The present study investigated longitudinal ultrasonic vibrations applied uniformly perpendicular to the weld line as an efficient approach in the ultrasonic-assisted gas metal arc welding (U-GMAW) of high-strength steel. The penetration depth, microstructure, microhardness, mechanical properties, and corrosion of welded joints produced from GMAW and U-GMAW were experimentally explored at different
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Characterization on vermicular graphite rate and tensile strength in vermicular graphite cast iron based on nonlinear ultrasonic technique Ultrasonics (IF 4.2) Pub Date : 2024-01-06 Yan Tang, Hanying Mao, Chunhua He, Hanling Mao, Yiwen Bi, Zhengfeng Huang, Xinxin Li, Yongchuan Lin
Ultrasonic techniques have been widely used to detect the percentage of vermicular graphite, defects, etc. in vermicular graphite cast iron. The linear ultrasonic velocity method is the main ultrasonic method for characterizing vermicular graphite rate and tensile strength in the current study, however, it is often easy to misjudge the vermicular graphite rate due to its insignificant variation. This
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Enhanced standing-wave acoustic levitation using high-order transverse modes in phased array ultrasonic cavities Ultrasonics (IF 4.2) Pub Date : 2024-01-02 Victor Contreras, Karen Volke-Sepúlveda
Airborne acoustic trapping by ultrasonic phased arrays has seen great advances in recent years, and yet the manipulation of objects with different shapes and sizes or heavy particles remains challenging. Here, we demonstrate that the manipulation capabilities of a standing-wave acoustic levitator can be extended by introducing intracavity high-order transverse (HOT) modes in the azimuthal direction
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Feasibility of in vitro calcification plaque disruption using ultrasound-induced microbubble inertial cavitation Ultrasonics (IF 4.2) Pub Date : 2024-01-04 Ching-Hsiang Fan, Chieh-Yu Tsai, Chun-Yen Lai, Ya-Fu Liou, Jen-Kuang Lee, Chih-Kuang Yeh
Percutaneous transluminal coronary angioplasty (PTCA) is a clinical method in which plaque-narrowed arteries are widened by inflating an intravascular balloon catheter. However, PTCA remains challenging to apply in calcified plaques since the high pressure required for achieving a therapeutic outcome can result in balloon rupture, vessel rupture, and intimal dissection. To address the problem with
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Quantitative ultrasound parameters from scattering and propagation may reduce the biopsy rate for breast tumor Ultrasonics (IF 4.2) Pub Date : 2023-12-30 Jiaqi Han, Pengfei Sun, Qizhen Sun, Zhun Xie, Lijun Xu, Xiangdong Hu, Jianguo Ma
Breast cancer has become the most common cancer worldwide, and early screening improves the patient’s survival rate significantly. Although pathology with needle-based biopsy is the gold standard for breast cancer diagnosis, it is invasive, painful, and expensive. Meanwhile it makes patients suffer from misplacement of the needle, resulting in misdiagnosis and further assessment. Ultrasound imaging
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Numerical and experimental investigations on quasi-static component generation of longitudinal wave propagation in isotropic pipes Ultrasonics (IF 4.2) Pub Date : 2023-12-30 Min Gao, Xianwen Hu, Ching-Tai Ng, Andrei Kotousov, Jingkai Lin
In this paper, the quasi-static component (QSC) generation of longitudinal waves propagating in an isotropic pipe is investigated numerically and experimentally. The three-dimensional (3D) finite element (FE) simulations are first carried out to gain physical insights into the characteristics of QSC generation from longitudinal wave travelling in an isotropic pipe with weak material nonlinearity. By
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In vivo exposure of the bladder using a non-invasive high intensity focused ultrasound toroidal transducer Ultrasonics (IF 4.2) Pub Date : 2024-01-03 Victor Delattre, Sophie Cambronero, Yao Chen, Gail ter Haar, Ian Rivens, Gerry Polton, Cyril Lafon, David Melodelima
A toroidal high-intensity focused ultrasound (HIFU) transducer was used to expose normal bladder wall tissues non-invasively in vivo in a porcine model in order to investigate the potential to treat bladder tumors. The transducer was divided into 32 concentric rings with equal surface areas, operating at 2.5 MHz. Eight animals were split into two groups of 4. In the first group, post-mortem evaluation
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Study on ultrasonic quantitative evaluation technique based on BP neural network and D-S evidence theory Ultrasonics (IF 4.2) Pub Date : 2023-12-31 Kai Yao, Xinglong Li, Zhaoxu Lu
Ultrasonic detection technology is widely used because of its high sensitivity, strong penetrating ability, accurate defect location, simple operation, and harmlessness to the human body. However, it is still challenging to locate and quantify the defects whose shapes are complex based on ultrasonic testing. The amount of data required for ultrasonic imaging is relatively large, and the efficiency
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Ultrasonic fatigue of unfilled and carbon nanotube (CNT) reinforced polyetheretherketone (PEEK) Ultrasonics (IF 4.2) Pub Date : 2023-12-30 Michael Fitzka, Bernd M. Schönbauer, Viktor Stojanovic, Harald Rennhofer, Helga Lichtenegger, Jason W. Carroll, Niloofar Sanaei, Javed Mapkar, Herwig Mayer
Fatigue properties of polyetheretherketone (PEEK) and multiwall carbon nanotube (CNT) reinforced PEEK were investigated with the ultrasonic fatigue testing method. Lifetimes were measured in the high and very high cycle fatigue regime at resonance frequency 19 kHz and load ratio R = -1. Pulse-pause loading served to avoid specimen self-heating and led to effective cycling frequencies in the range from
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Influence of MHz-order acoustic waves on bacterial suspensions Ultrasonics (IF 4.2) Pub Date : 2023-12-29 Nicholas S.L. Chew, Chien W. Ooi, Leslie Y. Yeo, Ming K. Tan
The development of alternative techniques to efficiently inactivate bacterial suspensions is crucial to prevent transmission of waterborne illness, particularly when commonly used techniques such as heating, filtration, chlorination, or ultraviolet treatment are not practical or feasible. We examine the effect of MHz-order acoustic wave irradiation in the form of surface acoustic waves (SAWs) on Gram-positive
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Surface breaking crack sizing method using pulse-echo Rayleigh waves Ultrasonics (IF 4.2) Pub Date : 2023-12-29 Bhupesh Verma, Pierre Bélanger
Surface cracks are common in various industries. Eddy current testing (ECT) is commonly used for crack sizing but necessitates complex calibration standards and a highly trained inspector. Moreover, for large-area inspections, it requires additional scanning arrangements. In recent years the wedge technique-based Rayleigh wave crack sizing method has attracted significant research interest due to its
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Static and dynamic diffuse wave inspection of delaminations in carbon fiber reinforced composites Ultrasonics (IF 4.2) Pub Date : 2023-12-25 Qi Zhu, Yuanjun Zhang, Chao Wang, Haiyan Zhang, Duo Xu, Dawei Tu
This paper aims to realize a self-reference delamination inspection in CFRPs with diffuse ultrasonic waves. The static experiments are first conducted on samples with a machined defect of 0.5 mm in height which simulates an opening state delamination. The diffusivity decreases with delamination diameter (pristine, 6 mm, 12 mm) at a constant depth and increases with delamination depth (0.25 mm, 0.75 mm)
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Histology-based quantification of boiling histotripsy outcomes via ResNet-18 network: Towards mechanical dose metrics Ultrasonics (IF 4.2) Pub Date : 2023-12-20 Ekaterina Ponomarchuk, Gilles Thomas, Minho Song, Alisa Krokhmal, Anastasia Kvashennikova, Yak-Nam Wang, Vera Khokhlova, Tatiana Khokhlova
This work was focused on the newly developed ultrasonic approach for non-invasive surgery – boiling histotripsy (BH) – recently proposed for mechanical ablation of tissues using pulsed high intensity focused ultrasound (HIFU). The BH lesion is known to depend in size and shape on exposure parameters and mechanical properties, structure and composition of tissue being treated. The aim of this work was
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A Direct Wavepath-based Element Localization Algorithm to Enable Flexible Ultrasound Array Imaging Ultrasonics (IF 4.2) Pub Date : 2023-12-20 C.L. Willey, V.W. Chen, A.T. Juhl
An algorithm is developed for determining the element locations of a flexible ultrasonic array when applied to a surface of unknown geometry. The algorithm forms a dataset of traveltimes from the direct wavepaths (i.e. rays) between transmitters and receivers, which serves as the input to an optimization scheme that iterates on the array element locations until an objective function is minimized. Once