Article
Engineering, Mechanical
Yu Fung Lee, Ye Lu
Summary: This study identified fatigue cracks in a steel joint under vibration using nonlinear guided waves based on second harmonic generation. Experimental results were validated using finite element method and a percent reduction in nonlinearity was proposed to evaluate crack length. The outcomes of this study further advance fatigue crack identification and qualification under practical working conditions.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Acoustics
Yu Fung Lee, Ye Lu
Summary: This study conducted a numerical investigation on fatigue crack trajectory simulation using SMART Crack Growth in ANSYS, and achieved the simulation of nonlinear ultrasonic waves for fatigue damage detection. The advanced simulation approach showed better agreement in terms of crack length compared to the common simulation approach, and considered the influence of crack orientation on acoustic nonlinearity, enhancing the capability of numerical modelling.
Article
Chemistry, Analytical
Weibin Li, Tianze Shi, Xiaoxu Qin, Mingxi Deng
Summary: A novel nonlinear ultrasonic technique based on the measure of third-order combined harmonic generation is proposed in this paper to detect and locate surface damage in 6061 aluminum alloy. This method can identify and locate nonlinear responses caused by fatigue damage and surface corrosion by checking the variation of frequency nonlinear response.
Article
Optics
Xinyu Zhao, Bin Wu
Summary: This study presents a series of defect detection and feature recognition algorithms that can achieve high accuracy defect detection and pixel-wise crack detection.
Article
Metallurgy & Metallurgical Engineering
Shazia Muzaffer, Kyong-Ho Chang, Zhen-Ming Wang, Seong-Uk Kang
Summary: In offshore structures, fatigue cracks in the jacket structure are caused by repeated wave pressure and wind loads, usually occurring at welded intersections. To improve fatigue life, it is crucial to identify the initial fatigue crack location, which can be prevented by using stiffeners. Through analysis and verification, it was quantitatively revealed that stiffeners are effective in preventing fatigue cracking, improving fatigue life, and decreasing stress concentration.
WELDING IN THE WORLD
(2022)
Article
Engineering, Mechanical
Jinjie Zhou, Yang Hu, Xiang Li, Yang Zheng, Sanhu Yang, Yao Liu
Summary: This study proposes a new micro-sized pinhole inspection method based on segmented time reversal (STR) and high-order modes cluster (HOMC) Lamb waves. The results show that the proposed method can amplify the pinhole defects by more than four times compared to conventional ultrasonic guided wave inspection methods, and it can detect micro-sized pinhole defects as small as 0.5 mm in diameter and 0.5 mm in depth. The combination of low-power and STR is more robust for detection in different environments.
CHINESE JOURNAL OF MECHANICAL ENGINEERING
(2023)
Article
Engineering, Mechanical
Lei Xu, Kai Wang, Xiongbin Yang, Yiyin Su, Jianwei Yang, Yaozhong Liao, Pengyu Zhou, Zhongqing Su
Summary: The study proposes a new two-step modeling framework for accurately characterizing and monitoring the development of fatigue damage, demonstrating the accuracy and precision of the framework in predicting fatigue crack growth through numerical simulation and experimental validation.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Materials Science, Characterization & Testing
Wujun Zhu, Zisheng Xu, Yanxun Xiang, Changjun Liu, Mingxi Deng, Xunlin Qiu, Di Sun, Fuzhen Xuan
Summary: The study shows that SCLWs are more sensitive to crack length, width, and orientation angle, making them useful for detecting the evolution of partially closed cracks in metal plates. Additionally, the acoustic nonlinearity parameter increases monotonically with increasing fatigue crack length.
NDT & E INTERNATIONAL
(2021)
Article
Engineering, Multidisciplinary
Ruoli Tang, Shangyu Zhang, Wenjun Wu, Shihan Zhang, Zichao Han
Summary: In this paper, a data-driven and finite-element-based method for pipe crack-grade identification and an explainable framework are proposed. The method uses an improved one-dimensional convolutional neural network with multi-size convolutional kernels for ultrasonic guided wave pipe crack grade identification, and a framework for crack-grade identification attribution analysis by using the LIME theory. The effectiveness of the developed methodology is verified by simulation and physical experiments, showing accurate and robust performance for pipe crack-grade identification under various noise conditions.
Article
Engineering, Mechanical
Noelle Easter C. Co, James T. Burns
Summary: The fatigue resistance of aerospace structures is affected by corrosion damage. The formation of fatigue cracks is influenced by the micro-scale corrosion morphologies and underlying microstructure. A modest correlation was found between the initiation of fatigue cracks and grains with high misorientation angles with respect to adjacent grains.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Review
Chemistry, Analytical
Linnan Jia, Jiayang Wu, Yuning Zhang, Yang Qu, Baohua Jia, David J. Moss
Summary: This paper reviews the recent advances in research on third-order optical nonlinearities of two-dimensional (2D) materials in optical communication systems. The material properties and characterization methods of 2D materials are discussed, along with a summary of the measured n(2) values in the telecommunications band. The current challenges and future perspectives are also discussed.
Article
Instruments & Instrumentation
Zhongshuai Zhang, Bin Guo, Yanyan Huo, Shuyun Wang, Tingyin Ning
Summary: We investigated the third-order optical nonlinearity in indium tin oxide (ITO) films with different grain orientations grown using magnetron sputtering technique. The nonlinear refractive index n2 and nonlinear absorption coefficient beta were measured by the Z-scan method and were found to be significantly influenced by grain orientations. Specifically, ITO films with near pure (222) crystalline orientation prepared at 90 W exhibited the highest values of n2 and beta compared to polycrystalline films prepared at different powers. The results indicate that the third-order optical nonlinearity in ITO films is governed by the crystalline orientation (222), providing guidance for fabricating ITO films with optimized third-order optical nonlinearity for high-performance nonlinear optical devices.
INFRARED PHYSICS & TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Chenxi Xie, Tianhao Liu, Cuixiang Pei, Yu Jin, Zhenmao Chen
Summary: A new plug-in longitudinal mode guided-wave EMAT with periodic pulsed electromagnets (PPEMs) is proposed in this paper, which shows good performance in generating and receiving L(0,2) mode guided wave in non-ferromagnetic pipes compared to traditional design with periodic permanent magnets (PPMs). The signal amplitude of the guided wave can be significantly enhanced with the use of the new GW EMAT with PPEMs.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Engineering, Mechanical
Chenwei Shao, Xinqiang Zhang, Shuo Zhao, Yankun Zhu, Huajie Yang, Yanzhong Tian, Zhenjun Zhang, Peng Zhang, Xianghai An, Zhefeng Zhang
Summary: This study proposes a crack growth model for LCF to enhance the LCF performance of engineering structural materials. By introducing strength gradient architecture and investigating the influences of strength/microstructure, it is found that TWIP steel with negative strength gradient exhibits excellent LCF properties.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Mathematics, Interdisciplinary Applications
Xudong Liu, Xiaojun Tong, Zhu Wang, Miao Zhang
Summary: This paper presents a third-order nonlinear digital filter with chaotic behavior, and proposes S-box generation algorithm and block cipher algorithm based on the filter, which show excellent cryptographic performances. Experiments demonstrate the competitiveness of the proposed algorithms with some of the most advanced ones.
CHAOS SOLITONS & FRACTALS
(2021)
Article
Physics, Applied
Yuchen Shen, Yanye Yang, Xiasheng Guo, Yong Shen, Dong Zhang
APPLIED PHYSICS LETTERS
(2019)
Article
Instruments & Instrumentation
Hongtao Lv, Jie Zhang, Jingpin Jiao, Anthony Croxford
SMART MATERIALS AND STRUCTURES
(2020)
Article
Acoustics
Yongfeng Song, Christopher M. Kube, Jie Zhang, Xiongbing Li
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2020)
Article
Materials Science, Characterization & Testing
Jie Zhang, Yongfeng Song, Xiongbing Li, ChengHuan Zhong
JOURNAL OF NONDESTRUCTIVE EVALUATION
(2020)
Article
Chemistry, Analytical
Zeyu Zhuang, Jie Zhang, Guoxuan Lian, Bruce W. Drinkwater
Article
Mechanics
Yiqiang Fan, Jie Zhang, Bin Wei, Bruce W. Drinkwater
Summary: This paper investigated the generation of acoustic vortices using an annular array of piezoelectric ceramics, designing and manipulating trapped particles and streaming lines in the fluid chamber through experiments and simulations. Results showed that the variation of excitation phases affected the patterns of the acoustic field, implying vortices in the fluid chamber. The research concluded that manipulation of trapped areas and streaming lines can be achieved by adjusting the phase of piezoelectric slices, with experimental data guiding the design of acoustic tweezers.
Article
Materials Science, Characterization & Testing
Jie Zhang, Alexander Velichko
Summary: The Full Matrix Capture (FMC) technique and its related algorithms can improve image quality and accurately characterize defects. A near-field model is developed to extract near-field scattering behavior from the far-field scattering matrix, optimizing array configurations.
NDT & E INTERNATIONAL
(2022)
Article
Multidisciplinary Sciences
Jie Zhang, Xudong Niu, Anthony J. Croxford, Bruce W. Drinkwater
Summary: This paper explores possible strategies for continuous non-destructive monitoring of large-scale structures using a collection of inspection robots. The robots use guided ultrasonic waves to detect and locate defects. Monte Carlo simulations reveal the compromise between the number of robots and defect location accuracy.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2022)
Article
Acoustics
Renzhi Sheng, Jie Zhang
Summary: This study investigated the transmitter aperture dependence of the ultrasonic nonlinear field using different mathematical models. The results showed that the KZK equation could simulate the acoustic distribution well for small aperture angles, while the SBE model was suitable for a wide range of aperture angles.
Article
Acoustics
Fei Du, Shiwei Wu, Renzhi Sheng, Chao Xu, Hai Gong, Jie Zhang
Summary: Bolt joints are widely used in aerospace and civil engineering, and online monitoring of bolt looseness is crucial for ensuring structural function and safety. This paper proposes a semi-analytic method to predict the transmission of guided waves in joint interfaces, which was validated through experiments.
Article
Materials Science, Characterization & Testing
Xudong Niu, Jie Zhang, Anthony Croxford, Bruce Drinkwater
Summary: This study explores how to accurately simulate the elastodynamic scattering behavior of an arbitrary defect using finite element analysis. The method involves measuring the scattered wave field and decomposing it into multi-modal far-field scattering amplitudes to determine the angular order of scattering. The results show that this approach allows for more efficient modeling of guided wave scattering and contributes to a better understanding of experimental defect characterization.
NONDESTRUCTIVE TESTING AND EVALUATION
(2023)
Article
Engineering, Mechanical
Shivaprasad Shridhara Bhat, Jie Zhang, Nicolas Larrosa
Summary: Existing structural integrity assessment procedures usually assume flaws to be infinitely sharp, which is often overly conservative. This study examines the sizing limitation and accuracy of ultrasonic array image-based techniques for non-sharp defects and highlights their influence on structural integrity assessments.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2022)
Article
Materials Science, Characterization & Testing
Tao Ye, Jie Zhang, Yu Du, Jianfeng Xu, Long Bai
Summary: An adaptive ultrasonic array imaging algorithm is proposed in this paper to enhance the signal-to-noise ratio of small subwavelength defects. The algorithm shows robust performance to time and spatial misalignments. In experiments, it achieved an average SNR improvement of 3.41 dB and 6.05 dB compared to conventional methods.
NDT & E INTERNATIONAL
(2023)
Article
Acoustics
Rhodri L. T. Bevan, Nicolas Budyn, Jie Zhang, Anthony J. Croxford, So Kitazawa, Paul D. Wilcox
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2020)
Article
Multidisciplinary Sciences
Paul D. Wilcox, Anthony J. Croxford, Nicolas Budyn, Rhodri L. T. Bevan, Jie Zhang, Artem Kashubin, Peter Cawley
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2020)
Article
Acoustics
Maxwell J. Kiernan, Rashid Al Mukaddim, Carol C. Mitchell, Jenna Maybock, Stephanie M. Wilbrand, Robert J. Dempsey, Tomy Varghese
Summary: In this study, a method for automatically determining bounding boxes and lumen segmentation using a Mask R-CNN network trained on sonographer assisted groundtruth carotid lumen segmentations is presented. This method is of great importance for analyzing ultrasound images that require time and labor, and it also lays the foundation for developing accurate plaque segmentation and wall thickness measurement methods.
Article
Acoustics
Junzhen Wang, Jianmin Qu
Summary: This article presents the solution to guided wave fields in a double-layer plate and proposes a nonlinear spring-interface model for the bonding between the two sublayers. The study finds that the nonlinearity of the spring-interface can generate resonant guided waves in the double-layer plate, providing a theoretical foundation for the development of nondestructive evaluation techniques using nonlinear guided waves.
Article
Acoustics
Shuyuan Ye, Tianyu Peng, Zhili Long, Zhiming Jiang, Xiangqing Li, Zhonghua Cao
Summary: In this study, a novel approach based on beating vibration model is proposed for frequency tracking, which accurately determines the resonant frequency of the transducer in a short time.
Article
Acoustics
Shuling Gao, Rui Zhang, Zheng Fan, Ning Li, Yanan Yue, Lili Xie
Summary: In this study, a novel method is proposed to monitor fatigue damage in welded joints by computing the energy density in the diffuse ultrasonic signal. The results indicate that the correlation coefficient of the energy density exhibits a significant decreasing trend when crack initiation occurs, providing a unique signal to indicate crack initiation in welded joints.
Article
Acoustics
Ata Jafarzadeh, Peter D. Folkow, Anders Bostrom
Summary: This study investigates the scattering of elastic waves by an anisotropic sphere with orthorhombic symmetry inside an isotropic medium, and applies it to the characterization of polycrystalline materials with anisotropic grains. The expansion coefficients of the wave and displacement field are determined inside the sphere using recursion relations and boundary conditions. The T matrix elements are then obtained and used to analyze the attenuation and phase velocity of polycrystalline materials, particularly at low frequencies. The proposed approach shows good agreement with previous results and finite element method for strongly anisotropic materials.
Article
Acoustics
F. R. Akhmedzhanov, M. I. Elboeva, S. Z. Mirzaev
Summary: The dependence of elastic and acousto-optic properties on the direction of wave vector and polarization of acoustic and optical waves in lead molybdate crystals has been investigated. Effective photoelastic constants were determined using the Dixon method for different geometries of Bragg light diffraction. The study of the acousto-optic quality factor dependence on the direction of the wave vector of longitudinal acoustic waves in the symmetry plane revealed that the maximum and minimum values are observed when light is diffracted by pure longitudinal waves in this plane. Additionally, it was found that the acousto-optic quality factor in lead molybdate crystals is practically the same as in paratellurite crystals.
Article
Acoustics
H. Franklin
Summary: This paper investigates the interaction between double porosity distributed cylindrical bodies and the surrounding fluid using a generalized self consistent method. The study reveals that there is a correlation between the propagating waves and the effective quantities at low frequencies, which is influenced by the volume fraction of scatterers and the porosity.
Article
Acoustics
Yuchen Liu, Mahshid Hafezi, Andrew Feeney
Summary: This study investigates the use of Nitinol, a shape memory alloy, in a Langevin power ultrasonic transducer to mitigate the influence of temperature on device performance. The results demonstrate that by controlling the microstructure of Nitinol, the nonlinear softening of the piezoelectric stack can be reduced, leading to higher and more stable vibration amplitudes. Furthermore, the use of Nitinol allows for stable resonance frequency and performance even with temperature changes and continuous operation.
Article
Acoustics
Shrutika Sharma, Vishal Gupta, Deepa Mudgal
Summary: Poly Lactic Acid (PLA) based bone plates fabricated using Fused Deposition Modeling can have improved mechanical strength by biocompatible polydopamine (PDM) coating. The effect of ultrasonic assisted coating parameters on tensile strength of coated bone plates was investigated and compared using Response Surface Methodology (RSM) and machine learning (ML) models. The gradient boosting regression (GBReg) model outperformed other models in terms of accuracy and prediction performance for predicting the tensile strength of PDM coated bone plates.
Article
Acoustics
Kirill Kolesnik, Vijay Rajagopal, David J. Collins
Summary: Superstrate-based acoustofluidic devices offer advantages of cost, interchangeability and prevention of contamination between samples. This study analyzes the coupling layers and superstrate dimensions for efficient sound transmission, finding that a superstrate thickness of 0.55 times the acoustic wavelength maximizes acoustic coupling.
Article
Acoustics
Dingpeng Wang, Xiaocen Wang, Shili Chen, Jian Li, Lin Liang, Yang Liu
Summary: This paper proposes an end-to-end ultrasonic guided wave joint learning imaging method for sparse and limited-view transducer arrays, which significantly improves the quality of imaging results by integrating sparse feature reconstruction and deep learning imaging methods.
Article
Acoustics
Zubeir M. Ebrahim Saib, Anthony J. Croxford, Bruce W. Drinkwater
Summary: This paper proposes a numerical model using FDTD scheme to solve the nonlinear elastic bulk wave equations, aiming to better understand nonlinear ultrasonic techniques. The model considers material and geometrical nonlinearities and uses a stress-type boundary condition for excitation. Simulation and experimental results validate the effectiveness of the model.
Article
Acoustics
Sol R. Martinez, Emmanuel Odella, Luis E. Ibarra, Arianna Sosa Lochedino, Ana B. Wendel, Andres M. Durantini, Carlos A. Chesta, Rodrigo E. Palacios
Summary: Sonodynamic inactivation (SDI) has an advantage over optical excitation-based protocols due to the deeper penetration of ultrasound (US) excitation. In this study, we applied conjugated polymer nanoparticles (CPNs) as an efficient sonosensitizer (SS) in SDI of pathogens and characterized the sonoreactor. We found that CPNs have a germicidal effect on planktonic cultures and mature biofilms, highlighting their potential for novel inactivation protocols.
Article
Acoustics
Quentin Baudis, Tony Valier-Brasier, Regis Wunenburger
Summary: In this study, we present a detailed procedure for measuring the rheological properties of soft, highly attenuating, visco-elastic materials at ultrasonic frequencies. We use a crosslinked Polyurethane (PU) elastomer as an example and determine its complex longitudinal modulus M and shear modulus G as a function of frequency and temperature. The results show that M, G, and bulk modulus K obey the time-temperature superposition principle and can be accurately described using a fractional derivative rheological model.
Article
Acoustics
Richard E. Jacob, Matthew S. Prowant, Chris A. Hutchinson
Summary: Ultrasonic inspection of cast austenitic stainless steel (CASS) in the nuclear industry is challenging due to sound field scatter and attenuation caused by the coarse-grained microstructure. Modeling and simulation are important tools for addressing key aspects of inspections, but developing a useful and reliable CASS model is challenging. This study demonstrates a method of creating a realistic CASS model and compares it with laboratory-measured sound fields, showing promising results.
