A coupling, stabilizing, and shaping strategy for breast ultrasound computed tomography (USCT) with a ring array transducer
This article proposes a coupling, stabilizing, and shaping strategy for the clinical application of USCT with a ring array transducer. The solid gel coupling agent (SGCA) is applied for coupling, and a set of SGCA moldings is designed to stabilize and shape the breast during scanning, the breast shape and size which vary from person to person are simplified into several models. The preparation time is reduced to less than 1 min by replacing disposable moldings. The results show that the breast after shaping is close to round in the coronal plane, and slopes of the breast skin are limited in the sagittal and transverse plan...
Source: Ultrasonics - December 6, 2023 Category: Physics Authors: Liang Zhou Qiude Zhang Yanle Wu Zhaohui Liu Yun Wu Xingrui Li Wu Qiu Cuijuan Lou Mingyue Ding Ming Yuchi Source Type: research
Acoustic emission characteristics of micro-discharges in initial pulsed PEO process on 60% SiC < sub > p < /sub > /Al composite
Ultrasonics. 2023 Dec 1;138:107213. doi: 10.1016/j.ultras.2023.107213. Online ahead of print.ABSTRACTThe initial discharge process of pulsed plasma electrolytic oxidation (PEO) on the 60% SiCp/2009 aluminum metal matrix composite (Al MMC) in silicate solution was monitored by acoustic emission (AE) technique. Parameters and correlations of AE signals on the Al MMC sample and under water were analyzed, and their generation mechanism was discussed. It was found that the peak amplitudes of AE signals and AE hits during the pulse time quickly increased with the increase of micro-discharge intensity, and the absolute energy of ...
Source: Ultrasonics - December 6, 2023 Category: Physics Authors: Yizhao Liao Qian Zhou Chuanli Gao Hui Li Chi Xu Xiaoyue Jin Jiancheng Du Wenbin Xue Yongzhong Zhang Source Type: research
Guided acoustic waves in thin epitaxial films: Experiment and inverse problem solution for NiTi
Ultrasonics. 2023 Nov 24;138:107211. doi: 10.1016/j.ultras.2023.107211. Online ahead of print.ABSTRACTDespite the fundamental and technological importance of the elastic constants, a suitable method for their full characterization in epitaxial films is missing. Here we show that transient grating spectroscopy (TGS) with highly k-vector-selective generation and detection of acoustic waves is capable of determination of all independent elastic coefficients of an epitaxial thin film grown on a single-crystalline substrate. This experimental setup enables detection of various types of guided acoustic waves and evaluation of th...
Source: Ultrasonics - December 6, 2023 Category: Physics Authors: Tom áš Grabec Zuzana Soudn á Krist ýna Repček Klara L ünser Sebastian F ähler Pavla Stoklasov á Petr Sedl ák Hanu š Seiner Source Type: research
Wavefield imaging of nonlinear ultrasonic Lamb waves for visualizing fatigue micro-cracks
Ultrasonics. 2023 Dec 2;138:107214. doi: 10.1016/j.ultras.2023.107214. Online ahead of print.ABSTRACTThe traditional nonlinear ultrasonic technique, as typified by the second-harmonic generation and the frequency mixing response, can be employed to identify and characterize the micro-damage. However, the research on micro-damage characterization using nonlinear Lamb wave imaging technique remains an ongoing challenge and is rarely reported. A method called standardized amplitude difference is proposed for nonlinear feature enhancement, and further for fatigue crack imaging based on the wavefield data. Wavefield data contai...
Source: Ultrasonics - December 6, 2023 Category: Physics Authors: Haiming Xu Lishuai Liu Xuan Li Yanxun Xiang Fu-Zhen Xuan Source Type: research
A coupling, stabilizing, and shaping strategy for breast ultrasound computed tomography (USCT) with a ring array transducer
This article proposes a coupling, stabilizing, and shaping strategy for the clinical application of USCT with a ring array transducer. The solid gel coupling agent (SGCA) is applied for coupling, and a set of SGCA moldings is designed to stabilize and shape the breast during scanning, the breast shape and size which vary from person to person are simplified into several models. The preparation time is reduced to less than 1 min by replacing disposable moldings. The results show that the breast after shaping is close to round in the coronal plane, and slopes of the breast skin are limited in the sagittal and transverse plan...
Source: Ultrasonics - December 6, 2023 Category: Physics Authors: Liang Zhou Qiude Zhang Yanle Wu Zhaohui Liu Yun Wu Xingrui Li Wu Qiu Cuijuan Lou Mingyue Ding Ming Yuchi Source Type: research
Acoustic emission characteristics of micro-discharges in initial pulsed PEO process on 60% SiC < sub > p < /sub > /Al composite
Ultrasonics. 2023 Dec 1;138:107213. doi: 10.1016/j.ultras.2023.107213. Online ahead of print.ABSTRACTThe initial discharge process of pulsed plasma electrolytic oxidation (PEO) on the 60% SiCp/2009 aluminum metal matrix composite (Al MMC) in silicate solution was monitored by acoustic emission (AE) technique. Parameters and correlations of AE signals on the Al MMC sample and under water were analyzed, and their generation mechanism was discussed. It was found that the peak amplitudes of AE signals and AE hits during the pulse time quickly increased with the increase of micro-discharge intensity, and the absolute energy of ...
Source: Ultrasonics - December 6, 2023 Category: Physics Authors: Yizhao Liao Qian Zhou Chuanli Gao Hui Li Chi Xu Xiaoyue Jin Jiancheng Du Wenbin Xue Yongzhong Zhang Source Type: research
Scattering of elastic waves by a sphere with orthorhombic anisotropy and application to polycrystalline material characterization
Ultrasonics. 2023 Nov 20;138:107199. doi: 10.1016/j.ultras.2023.107199. Online ahead of print.ABSTRACTScattering of elastic waves by an anisotropic sphere with orthorhombic symmetry inside an isotropic medium is studied and applied to characterization of polycrystalline materials with anisotropic grains. For a single sphere the waves in the isotropic surrounding are expanded in the spherical vector wave functions. Inside the sphere, the elastodynamic equations are first transformed to spherical coordinates and the displacement field is expanded in terms of the vector spherical harmonics in the angular directions and power ...
Source: Ultrasonics - November 28, 2023 Category: Physics Authors: Ata Jafarzadeh Peter D Folkow Anders Bostr öm Source Type: research
Scattering of elastic waves by a sphere with orthorhombic anisotropy and application to polycrystalline material characterization
Ultrasonics. 2023 Nov 20;138:107199. doi: 10.1016/j.ultras.2023.107199. Online ahead of print.ABSTRACTScattering of elastic waves by an anisotropic sphere with orthorhombic symmetry inside an isotropic medium is studied and applied to characterization of polycrystalline materials with anisotropic grains. For a single sphere the waves in the isotropic surrounding are expanded in the spherical vector wave functions. Inside the sphere, the elastodynamic equations are first transformed to spherical coordinates and the displacement field is expanded in terms of the vector spherical harmonics in the angular directions and power ...
Source: Ultrasonics - November 28, 2023 Category: Physics Authors: Ata Jafarzadeh Peter D Folkow Anders Bostr öm Source Type: research
Scattering of elastic waves by a sphere with orthorhombic anisotropy and application to polycrystalline material characterization
Ultrasonics. 2023 Nov 20;138:107199. doi: 10.1016/j.ultras.2023.107199. Online ahead of print.ABSTRACTScattering of elastic waves by an anisotropic sphere with orthorhombic symmetry inside an isotropic medium is studied and applied to characterization of polycrystalline materials with anisotropic grains. For a single sphere the waves in the isotropic surrounding are expanded in the spherical vector wave functions. Inside the sphere, the elastodynamic equations are first transformed to spherical coordinates and the displacement field is expanded in terms of the vector spherical harmonics in the angular directions and power ...
Source: Ultrasonics - November 28, 2023 Category: Physics Authors: Ata Jafarzadeh Peter D Folkow Anders Bostr öm Source Type: research
Scattering of elastic waves by a sphere with orthorhombic anisotropy and application to polycrystalline material characterization
Ultrasonics. 2023 Nov 20;138:107199. doi: 10.1016/j.ultras.2023.107199. Online ahead of print.ABSTRACTScattering of elastic waves by an anisotropic sphere with orthorhombic symmetry inside an isotropic medium is studied and applied to characterization of polycrystalline materials with anisotropic grains. For a single sphere the waves in the isotropic surrounding are expanded in the spherical vector wave functions. Inside the sphere, the elastodynamic equations are first transformed to spherical coordinates and the displacement field is expanded in terms of the vector spherical harmonics in the angular directions and power ...
Source: Ultrasonics - November 28, 2023 Category: Physics Authors: Ata Jafarzadeh Peter D Folkow Anders Bostr öm Source Type: research
Scattering of elastic waves by a sphere with orthorhombic anisotropy and application to polycrystalline material characterization
Ultrasonics. 2023 Nov 20;138:107199. doi: 10.1016/j.ultras.2023.107199. Online ahead of print.ABSTRACTScattering of elastic waves by an anisotropic sphere with orthorhombic symmetry inside an isotropic medium is studied and applied to characterization of polycrystalline materials with anisotropic grains. For a single sphere the waves in the isotropic surrounding are expanded in the spherical vector wave functions. Inside the sphere, the elastodynamic equations are first transformed to spherical coordinates and the displacement field is expanded in terms of the vector spherical harmonics in the angular directions and power ...
Source: Ultrasonics - November 28, 2023 Category: Physics Authors: Ata Jafarzadeh Peter D Folkow Anders Bostr öm Source Type: research
Scattering of elastic waves by a sphere with orthorhombic anisotropy and application to polycrystalline material characterization
Ultrasonics. 2023 Nov 20;138:107199. doi: 10.1016/j.ultras.2023.107199. Online ahead of print.ABSTRACTScattering of elastic waves by an anisotropic sphere with orthorhombic symmetry inside an isotropic medium is studied and applied to characterization of polycrystalline materials with anisotropic grains. For a single sphere the waves in the isotropic surrounding are expanded in the spherical vector wave functions. Inside the sphere, the elastodynamic equations are first transformed to spherical coordinates and the displacement field is expanded in terms of the vector spherical harmonics in the angular directions and power ...
Source: Ultrasonics - November 28, 2023 Category: Physics Authors: Ata Jafarzadeh Peter D Folkow Anders Bostr öm Source Type: research
Scattering of elastic waves by a sphere with orthorhombic anisotropy and application to polycrystalline material characterization
Ultrasonics. 2023 Nov 20;138:107199. doi: 10.1016/j.ultras.2023.107199. Online ahead of print.ABSTRACTScattering of elastic waves by an anisotropic sphere with orthorhombic symmetry inside an isotropic medium is studied and applied to characterization of polycrystalline materials with anisotropic grains. For a single sphere the waves in the isotropic surrounding are expanded in the spherical vector wave functions. Inside the sphere, the elastodynamic equations are first transformed to spherical coordinates and the displacement field is expanded in terms of the vector spherical harmonics in the angular directions and power ...
Source: Ultrasonics - November 28, 2023 Category: Physics Authors: Ata Jafarzadeh Peter D Folkow Anders Bostr öm Source Type: research
A multimodal lithium niobate-based SAW gas sensor for accurate detection of carbon dioxide at elevated temperature
Ultrasonics. 2023 Nov 17;138:107198. doi: 10.1016/j.ultras.2023.107198. Online ahead of print.ABSTRACTCarbon dioxide (CO2) detection is crucial for safety control, monitoring of the environment, and other industrial applications. The diverse fields of applications make the detection of CO2 a challenging task. In this paper, a study on a multimodal surface acoustic wave (SAW) CO2 sensing system was conducted to scrutinize the sensitivity of the lithium niobate-based multimodal SAW sensor towards CO2 with temperature compensation. The study focused on developing and evaluating a SAW temperature-compensated gas sensor using t...
Source: Ultrasonics - November 27, 2023 Category: Physics Authors: Muhammad Zubair Aslam Haifeng Zhang Morris Good Yanming Guo Michael Larche Source Type: research
A multimodal lithium niobate-based SAW gas sensor for accurate detection of carbon dioxide at elevated temperature
Ultrasonics. 2023 Nov 17;138:107198. doi: 10.1016/j.ultras.2023.107198. Online ahead of print.ABSTRACTCarbon dioxide (CO2) detection is crucial for safety control, monitoring of the environment, and other industrial applications. The diverse fields of applications make the detection of CO2 a challenging task. In this paper, a study on a multimodal surface acoustic wave (SAW) CO2 sensing system was conducted to scrutinize the sensitivity of the lithium niobate-based multimodal SAW sensor towards CO2 with temperature compensation. The study focused on developing and evaluating a SAW temperature-compensated gas sensor using t...
Source: Ultrasonics - November 27, 2023 Category: Physics Authors: Muhammad Zubair Aslam Haifeng Zhang Morris Good Yanming Guo Michael Larche Source Type: research
