Grain size evaluation in polycrystalline materials using the interference effect of bounded ultrasonic beams at the Rayleigh critical angle [0.03%]
基于瑞利临界角的有界超声波干涉效应多晶体材料晶粒尺寸评价方法研究
Quanqing Lai,Mingxi Deng
Quanqing Lai
Non-destructive evaluation of grain size is crucial for characterizing the mechanical properties of polycrystalline materials. We present a novel ultrasonic methodology for evaluating mean grain size based on the interference effect of boun...
Ultrasonic characterization of functionally graded materials using a continuously graded model and spectral inversion [0.03%]
基于连续梯度模型和谱反演的函数梯度材料的超声特性研究
Pu Cheng,Chengcheng Zhang,Jinxing Qiu et al.
Pu Cheng et al.
Quantitative ultrasonic characterization of functionally graded materials (FGMs) remains challenging because conventional discrete layered models (DLMs) approximate continuous gradients as sharp internal interfaces, which can introduce non-...
Tuhin Roy,Charles B Capron,Shuvrodeb Adhikary et al.
Tuhin Roy et al.
Objective: To estimate viscoelastic properties of the arterial wall, this study presents a novel frequency-wavenumber (f-k) domain inversion approach that enhances the sensitivity and robustness of the parameter estimatio...
Pressure- and frequency-dependent acoustic behavior of second-generation acoustic reporter genes-expressing bacteria for optimized ultrasound imaging [0.03%]
次代型声学报告基因表达细菌的声学行为的压力和频率依赖性及其在超声成像中的优化作用
Yueyuan Wang,Chaonan Zhang,Zhibo Zhu et al.
Yueyuan Wang et al.
Acoustic reporter genes (ARGs) enable genetically engineered bacteria to express gas vesicles (GVs), which function as intracellular acoustic scatterers for noninvasive ultrasound imaging. While second-generation ARGs (bARGSer) exhibit enha...
Laser ultrasonic detection for strut defects in additively manufactured lattice structure using zero-group-velocity Lamb waves [0.03%]
零群速度兰姆波用于激光超声金属格栅结构支撑缺陷检测的研究
Sijie Yuan,Peipei Liu,Junhao Chen et al.
Sijie Yuan et al.
Strut defects are prone to occur in additively manufactured lattice structures and can significantly degrade their mechanical performance, while non-destructive testing of such periodically complex architectures remains challenging. This st...
A hemispherical bubble induced by ultrasonic vibration observed by high-speed X-ray imaging [0.03%]
高速X射线影像观测的超声波振动诱导半球形气泡现象研究
Hitoshi Soyama,Ryosuke Ueda,Kentaro Kajiwara et al.
Hitoshi Soyama et al.
Acoustic cavitation, also called ultrasonic cavitation, can produce aggressive intensity leading to cavitation erosion due to high pressure wave amplitudes, and impact forces on surfaces. However, its intensity changes drastically with the ...
Rayleigh damping for approximating Lamb wave attenuation in finite element simulations [0.03%]
瑞利阻尼在有限元仿真中近似兰姆波衰减的方法
Mattie Green,Fadhel Alsaffar,Ajit Mal et al.
Mattie Green et al.
Numerical modeling of Lamb wave propagation is useful in determining sensor placement and other elements of experiment design. A validated numerical model can also help predict the behavior of cases that may be difficult or impossible to me...
MUnet: A model-based unrolled reconstruction framework for computational photoacoustic imaging [0.03%]
基于模型的计算型超声波成像展开重建框架(Munet)
Qi Liu,Le Li,Zifeng Zhao et al.
Qi Liu et al.
Photoacoustic imaging provides unique optical contrast with ultrasonic penetration, enabling high-resolution visualization of biological structures in vivo. However, robust image reconstruction remains challenging under practical conditions...
Uncovering the mechanism of ultrasonic cavitation-induced deagglomeration of 7-ADCA agglomerates [0.03%]
揭示超声空化诱导7-ADCA聚集体解聚的机制
Zhijia Hao,Xiaowei Cheng,Yuan Han et al.
Zhijia Hao et al.
Although ultrasound-mediated deagglomeration is an efficient and environmentally friendly technique, its underlying mechanism is not yet fully understood. This study systematically investigates the unique agglomeration behavior of 7-ADCA cr...
Identifiability limits in ultrasonic microstructure characterisation using attenuation and velocity features: Canonical analysis and stochastic surrogate modelling [0.03%]
基于衰减和速度特征的超声微结构表征的可辨识极限：典范分析与随机代理模型
Wei Yi Yeoh
Wei Yi Yeoh
Ultrasound for microstructure characterisation is increasingly studied and is often assessed through inversion performance. However, the framework is fundamentally constrained by the information content available in the measured response. H...