Experimental observations of ultrasonic waves reflecting from and passing through a crack [0.03%]
裂纹透射和反射超声波的实验观察
Masahiro Suetsugu,Kaori Shirakihara,Minoru Tamiaki et al.
Masahiro Suetsugu et al.
A crack was introduced into a glass plate by applying thermal stress, and the propagation characteristics of longitudinal ultrasonic waves at this crack were observed using the photoelastic method. Waves incident on the closed crack passed ...
Static component of nonlinear guided wave as a Preferable indicator of creep damage in superalloys [0.03%]
非线性导波的静态分量作为高温合金蠕变损伤的优选指示参数
Peng Zheng,Xuan Li,Peng Xiao et al.
Peng Zheng et al.
Nonlinear ultrasonic testing based on second harmonic generation has shown promise for early-stage creep damage detection. However, its practical application is constrained by a strong dependence on mode-matching conditions and signal degra...
A multi-mode coupling damage classification method for composite structures based on acoustic emission signal decomposition [0.03%]
基于声发射信号分解的复合材料结构多模态损伤表征与分类方法研究
Yinmin Zhu,Wenhao Li,Jing Lin et al.
Yinmin Zhu et al.
Multi-mode damage coupling in composite structures is a key factor preventing accurate classification of different damage types. To address this, this paper presents a damage classification framework for composite structures based on acoust...
Feasibility of deep learning-based cancer detection in ultrasound microvascular images [0.03%]
基于深度学习的超声微血管图像癌症检测的可行性研究
Kathlyne Jayne B Bautista,Thomas M Kierski,Isabel G Newsome et al.
Kathlyne Jayne B Bautista et al.
Acoustic angiography is a superharmonic contrast-enhanced ultrasound modality that maps 3-D microvasculature with fine spatial resolutions and has demonstrated potential to improve disease detection. However, the application of acoustic ang...
A theoretical model for predicting the ultrasonic signals in cylindrical waveguide generated by EMATs [0.03%]
一种预测电磁超声导波换能器在圆柱体中激发的超声信号的理论模型
Xi Li,Zhichao Li,Shujuan Wang et al.
Xi Li et al.
Developing a numerical model that accurately predicts ultrasonic signals in cylinders without relying on the finite element (FE) method can significantly improve computational efficiency. However, existing models capable of predicting recei...
Modeling and simulation of zero-group-velocity combined harmonic generated by two counter-directional Lamb waves mixing in an adhesively bonded plate [0.03%]
两相向Lamb波在粘接板中的混频零群速组合倍频的建模与仿真研究
Han Chen,Mingxi Deng,Yan Chen et al.
Han Chen et al.
The zero-group-velocity (ZGV) mode of Lamb waves exhibits unique characteristics, where acoustic energy is trapped within localized regions of the waveguide. Previous research has established that ZGV combined harmonics - generated through ...
S A Hoseini Sabzevari,M H Jalal Kamali
S A Hoseini Sabzevari
A novel approach based on low sampling rate data is proposed to detect early-stage bolt looseness in structural joints. This study investigates how bolt loosening affects the acoustic emission signal in a multi-bolt connection using low sam...
Assessment of the uncertainty of shear wave speed measurements in ultrasound elastography [0.03%]
剪切波速度测量在超声弹性图中的不确定性评估
A V Alvarenga,K V Ramnarine,H Koruk et al.
A V Alvarenga et al.
Accurate measurement of tissue mechanical properties is crucial for diagnosing and characterising various pathological conditions. Among these properties, shear wave speed (SWS) is an indicator of tissue stiffness and has been widely studie...
Assessing myocardial stiffness with transient elastography using catheter-compatible miniature actuator [0.03%]
基于导管兼容微型执行器的瞬时弹性成像评价心肌僵硬度
Samuel M A Morais,Andrei B Karpiouk,Donald J VanderLaan et al.
Samuel M A Morais et al.
This study presents a proof-of-concept miniaturized transient elastography (TE) framework for measuring myocardial elasticity during catheter-based cardiac procedures. Recognizing that mechanical properties of myocardial tissue, particularl...
Low-voltage traveling wave rotary ultrasonic motor based on piezoelectric bimorph [0.03%]
低电压行波旋转超声电机的研究——压电双晶片的应用
Lin Yang,Jie Zhang,Yue Xiong et al.
Lin Yang et al.
To solve the problem of high driving voltage of traditional traveling wave rotary ultrasonic motor (TRUM), a low-voltage traveling wave rotary ultrasonic motor is proposed by using a piezoelectric bimorph. First, the whole structure of the ...