Crack length directivity effects on guided-wave acoustic emission: Numerical investigation of radiation patterns [0.03%]
裂纹长度对导波声发射辐射图样影响的数值研究
Brennan Dubuc
Brennan Dubuc
This paper investigates the effect of a finite-sized crack surface on acoustic emission (AE) generated at the crack tip in a thin metallic plate using a 3D time-domain finite element model. Directivity effects on the first arrivals are of p...
Numerical model of nonlinear elastic bulk wave propagation in solids for non-destructive evaluation [0.03%]
固体非线性弹性体波传播的数值模型在无损检测中的应用
Zubeir M Ebrahim Saib,Anthony J Croxford,Bruce W Drinkwater
Zubeir M Ebrahim Saib
Nonlinear ultrasonic techniques can be difficult and non-intuitive to understand due to the range of wave mixing combinations available between similar or different wave modes. To overcome this, a numerical model that uses a Finite Differen...
Automatic extraction and measurement of ultrasonic muscle morphological parameters based on multi-stage fusion and segmentation [0.03%]
基于多阶段融合与分割的自动超声肌肉形态参数提取与测量方法
Mingxia Zhang,Liangrun Zhao,Xiaohan Wang et al.
Mingxia Zhang et al.
Background: Estimating skeletal muscle force output and structure requires measurement of morphological parameters including muscle thickness, pennation angle, and fascicle length. The identification of aponeurosis and mu...
Depth profiling of residual stress distribution in surface treated metallic structures using nonlinear ultrasonics [0.03%]
基于非线性超声的表面处理金属结构残余应力分布深度剖析
Santhakumar Sampath,Hongfei Liu,Zi Wen Tham et al.
Santhakumar Sampath et al.
Robotic hammer peening (RHP) is a cold-working technique to improve the fatigue life of metallic structures by inducing compressive residual stress in the near-surface region. Measuring the depth profiling of residual stress distribution pl...
Characterizing polycrystalline microstructures by reconstructing grain boundaries and velocity map from ultrasonic surface wave field [0.03%]
基于超声表面波场的晶界和速度图重建及其多晶微结构表征
Zeqing Sun,Shangzi Wu,Abhishek Saini et al.
Zeqing Sun et al.
An ultrasonic material characterization method is proposed to reconstruct the polycrystalline microstructures from the field-measurement of ultrasonic surface waves. Two wavenumber-frequency domain filters are developed to extract specific ...
An efficient method for transcranial ultrasound focus correction based on the coupling of boundary integrals and finite elements [0.03%]
基于边界积分和有限元耦合的颅内超声聚焦校正的有效方法研究
Fei Shen,Fan Fan,Fengji Li et al.
Fei Shen et al.
Transcranial focused ultrasound is a novel technique for the noninvasive treatment of brain diseases. The success of the treatment greatly depends on achieving precise and efficient intraoperative focus. However, compensating for aberrated ...
Conjugated polymer nanoparticles as sonosensitizers in sono-inactivation of a broad spectrum of pathogens [0.03%]
共轭聚合物纳米颗粒作为声敏化剂用于广谱病原体的声学灭活
Sol R Martínez,Emmanuel Odella,Luis E Ibarra et al.
Sol R Martínez et al.
Sonodynamic inactivation (SDI) of pathogens has an important advantage when compared to optical excitation-based protocols due to the deeper penetration of ultrasound (US) excitation in biological media or animal tissue. Sonosensitizers (SS...
Passive reconstruction of dispersion curve in plates via flow-induced random vibration: The effect of boundary reflection and sensor placement [0.03%]
基于流激随机振动的板结构模态参数无损识别研究-边界与传感器布局的影响分析
Qihang Qin,Xun Wang,Jingjing He et al.
Qihang Qin et al.
Flow-induced random vibration propagates throughout a plate-like structure and thus contains information about the structural properties and states. Previous research has shown that the group velocity under various frequencies can be estima...
Ultrasound image super-resolution reconstruction based on semi-supervised CycleGAN [0.03%]
基于半监督CycleGAN的超声图像超分辨重建方法研究
Fei Gao,Bing Li,Lei Chen et al.
Fei Gao et al.
In ultrasonic testing, diffraction artifacts generated around defects increase the challenge of quantitatively characterizing defects. In this paper, we propose a label-enhanced semi-supervised CycleGAN network model, referred to as LESS-Cy...
Quantitative damage evaluation of curved plates based on phased array guided wave and deep learning algorithm [0.03%]
基于相控阵导波和深度学习算法的曲板量化损伤评估
Qi Yuan,Ying Wang,Zhongqing Su et al.
Qi Yuan et al.
Recent advances in phased array guided wave (PAGW) have demonstrated the potential of minor damage detection and localization in widely used curved plates, but quantitative damage evaluation remains difficult since effective features that a...