Wavefield imaging of nonlinear ultrasonic Lamb waves for visualizing fatigue micro-cracks

H Xu, L Liu, X Li, Y **ang, FZ Xuan - Ultrasonics, 2024 - Elsevier
The traditional nonlinear ultrasonic technique, as typified by the second-harmonic
generation and the frequency mixing response, can be employed to identify and …

Low-frequency Lamb wave mixing for fatigue damage evaluation using phase-reversal approach

H Zhu, CT Ng, A Kotousov - Ultrasonics, 2022 - Elsevier
Fatigue damage is difficult to detect and evaluate non-destructively, specifically at its early
stages (before the macro-crack formation). In this study, fatigue damage is evaluated based …

Debonding detection in FRP-strengthened concrete structures utilising nonlinear Rayleigh wave mixing

Y Cao, CT Ng, ST Smith - Measurement, 2023 - Elsevier
This paper reports an investigation on the use of Rayleigh wave mixing method for the
debonding detection in concrete structures strengthened with externally bonded fibre …

Multi-type damage localization using the scattering coefficient-based RAPID algorithm with damage indexes separation and imaging fusion

Q Bao, T **e, W Hu, K Tao… - Structural Health …, 2024 - journals.sagepub.com
Guided waves-based structural health monitoring (SHM) methods have potential for
practical applications, since they are sensitive to small damages and are able to realize …

Fatigue crack detection in edges of thin-walled structures with corners using the fundamental mode of edge waves

H Zhu, CT Ng, A Kotousov - Ultrasonics, 2023 - Elsevier
Non-destructive detection and evaluation of fatigue cracks is critical to maintain safety and
effective operation of high-value assets working under cyclic loading. However, this can be …

Advanced numerical simulations considering crack orientation for fatigue damage quantification using nonlinear guided waves

YF Lee, Y Lu - Ultrasonics, 2022 - Elsevier
A numerical study including a fatigue crack trajectory simulation was undertaken by means
of separating morphing and adaptive remeshing technology (SMART) Crack Growth in …

[HTML][HTML] Methodologies for modeling and identification of breathing crack: A review

S Ganguly - MethodsX, 2023 - Elsevier
Swift development of technology for monitoring complex structures demands major attention
on the precision of damage detection methods. The early detection of any type of …

Frequency-dependent scattering of wideband laser-generated Rayleigh waves for vertical surface crack characterization

L Xu, Y Su, J Yang, Z Su - Smart Materials and Structures, 2023 - iopscience.iop.org
Wideband laser-generated Rayleigh waves have been extensively exploited for surface
crack characterization, most of which, nonetheless, are of a nature of either numerical …

Reciprocity-based closed-form solutions to guided waves in multilayered structures subjected to time-harmonic excitations

D Le, LH Le, H Nguyen, LC Emmanuel, HN Tran… - European Journal of …, 2023 - Elsevier
Ultrasonic guided waves provide an efficient tool for nondestructive evaluation and
characterization of multilayered structures, eg, of adhesively bonded joint in aerospace …

Validation of zero-group-velocity feature guided waves in a welded joint

X Meng, M Deng, W Li - Ultrasonics, 2024 - Elsevier
Extensive research has been conducted on zero-group-velocity (ZGV) Lamb waves in
elastic plates, demonstrating significant progress in the field of nondestructive testing …