Article
Engineering, Electrical & Electronic
Zhigang Qu, Quanpeng Zhang, Yunkun Fu, Yang An, Chuanxian Chen, Xin Shan, Yuan Sun, Jianyin Zhao
Summary: This article proposes a method for defect detection in the insulation layer of bent aircraft cables using ultrasonic guided waves (UGWs), which is a major issue in the aerospace industry. The propagation characteristics of UGWs in bent cables were studied through simulation and experiments, and wavelet packet decomposition (WPD) was used to extract features from the detection signals to distinguish bending and defects in the insulation layer. Experimental results show that the method can detect and locate both bending and defects (abrasion and cut) in the insulation layer, with a maximum relative error in localization of 0.3%.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Engineering, Mechanical
Morteza Tabatabaeipour, Oksana Trushkevych, Gordon Dobie, Rachel S. Edwards, Ross McMillan, Charles Macleod, Richard O'Leary, Steve Dixon, Anthony Gachagan, Stephen G. Pierce
Summary: This study evaluated the benefits of using ultrasonic guided waves for mapping structures on a mobile magnetic robotic platform, successfully demonstrating the localization of edges and welded joints. The proposed mapping algorithm estimated the position of sample edges with a range accuracy of < 1.7 mm (1 sigma), showcasing the potential of this technology for future applications in embedded sensor technology.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Acoustics
Ambuj K. Gautam, Ching-Chung Yin, Bishakh Bhattacharya
Summary: This study proposes a novel design of EMAT with a new coil structure, which shows better performance compared to conventional EMAT models in detecting surface defects in pipelines.
Article
Acoustics
Chang Jiang, Weibin Li, Mingxi Deng
Summary: The study of self- and cross-interactions of shear horizontal (SH) waves in nonlinear ultrasonic practice is important due to their high sensitivity to microdamage. This study presents a comprehensive investigation into the ultrasonic harmonic wave generation of SH guided waves, revealing the existence of newly generated higher and combined harmonic waves. The insights gained from this study provide a better understanding of the frequency mixing response of SH waves.
JOURNAL OF VIBRATION AND CONTROL
(2023)
Article
Construction & Building Technology
Yikuan Wang, Abhijit Mukherjee, Arnaud Castel
Summary: This study proposed a nondestructive method using ultrasonic shear waves to detect steel-concrete interface debonding caused by the top-bar effect. Experiments were conducted by casting horizontal reinforcements at different heights in a concrete wall to create interfacial defects underneath the top bars, and the results showed that the signal amplitude increased with the height of the bars. Utilizing the increasing difference between the high-frequency component and the excitation frequency of the signal could be a way to monitor the top-bar effect nondestructively.
JOURNAL OF STRUCTURAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Morteza Tabatabaeipour, Konstantinos Tzaferis, Ross McMillan, William Jackson, Gordon Dobie, Rachel S. Edwards, Oksana Trushkevych, Anthony Gachagan
Summary: This paper investigates the instantaneous phase characteristics of shear horizontal guided waves and explores the feasibility of estimating the minimum remaining wall thickness using Gaussian process regression. The research shows that the model built by integrating large-scale simulated and low-scale experimental data has high accuracy in wall thickness gauging.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Characterization & Testing
Aurelien Thon, Guillaume Painchaud-April, Alain Le Duff, Pierre Belanger
Summary: Ultrasonic guided wave screenings have proven to be fast and reliable in detecting various types of defects in plate-like structures. Low frequency ultrasonic guided waves are used to screen long sections of pipelines. Selectively exciting and detecting a single high-order mode or a group of high-order modes is crucial when operating at a frequency beyond the cutoff of the first high-order mode.
NDT & E INTERNATIONAL
(2023)
Article
Acoustics
Zhigang Qu, Yunkun Fu, Quanpeng Zhang, Yang An, Xin Shan, Yuan Sun, Jianyin Zhao, Chuanxian Chen
Summary: This paper proposes an online detection method for multi-strand aircraft wire (MSAW) based on ultrasonic guided waves (UGWs). The experimental results demonstrate the effectiveness of this method in detecting wire defects and investigate the influence of different defect characteristics.
Article
Engineering, Multidisciplinary
Valentin Serey, Nicolas Quaegebeur, Mathieu Renier, Philippe Micheau, Patrice Masson, Michel Castaings
Summary: This article explores the propagation of finite rectangular cross-section thin plates in a rectangular bar, discussing the impact of finite lateral width on mode density and extending the selective mode generation method. Experimental results show that single mode generation of A(0,0) and A(0,1) can be achieved in an aluminum bar.
STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
(2021)
Article
Engineering, Multidisciplinary
Yanping Zhu, Fucai Li, Wenjie Bao
Summary: This article explores the detection of fatigue cracks in vibration condition caused by operation using ultrasonic guided waves, proposing a detection method based on the difference index and the sequence curve of difference index between different states of crack. Experimental results show that loads from 0 to 24 MPa have minimal effect on ultrasonic guided waves, and the method based on difference index value and sequence of difference index is reliable for detecting fatigue cracks in structures under vibration conditions.
STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
(2021)
Article
Multidisciplinary Sciences
Jingsong Xie, Wenxiang Ding, Wen Zou, Tiantian Wang, Jinsong Yang
Summary: This study investigates the capability of ultrasonic guided waves (UGWs) in detecting internal defects in worn rails and proposes an effective excitation method. Through simulations and analysis, the sensitivity and localization ability of the selected mode to defects are validated, and the effects of various factors on the reflection waveforms are studied.
Article
Instruments & Instrumentation
Hongyu Cui, Ben Li, Li Bin Zhou, Weiming Liu
Summary: This study conducted structural health monitoring and damage detection for thick plate structures using thickness poled SH wave piezoelectric transducers. The experimental results show that structural damage detection based on SH waves can effectively identify and locate thick plate structural damage.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Engineering, Chemical
Dileep Koodalil, Prabhu Rajagopal, Krishnan Balasubramaniam
Summary: This study developed a technique for estimating the stiffness of an aluminium/epoxy/aluminium lap shear joint using shear horizontal guided waves and periodic permanent magnet electromagnetic acoustic transducers. Different inspection modes were explored in experiments, and a method for calculating energy velocity and stiffness in the bond was proposed.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2021)
Article
Engineering, Aerospace
Like Xie, Hua Liang, Haohua Zong, Yun Wu, Yinghong LI, Zhi Su, Xuecheng Liu
Summary: A strategy of ice shape modulation is proposed for UAVs with limited electrical power to effectively anti-/de-icing at the leading edge of the wing. Experimental measurements of a 3D printed ice shape on a NACA0012 finite wing model reveal that the wing lift coefficient varies with the dimensionless ice shape length (w/c) and the dimensionless modulation ratio (w/)). The flow separation area along the spanwise direction is influenced by the acceleration effect and the cross-flow caused by streamwise vortices. Flight tests verify the effectiveness of the modulation scheme for UAVs in severe weather conditions.
CHINESE JOURNAL OF AERONAUTICS
(2023)
Article
Engineering, Multidisciplinary
M. Osika, A. Ziaja-Sujdak, R. Radecki, W. J. Staszewski
Summary: The Luxembourg-Gorky (L-G) effect for elastic shear horizontal guided waves is investigated using a new non-classical theoretical model of wave dissipation. The experimental results, validated with numerical simulations, not only explain the acoustic equivalent of the L-G effect but also demonstrate the influence of damage severity and carrier frequencies on the nonlinear modulation transfer behind this effect. The findings align well with the analytical models explaining the original L-G effect for electromagnetic waves.
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE
(2023)
