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 …

A nonlinear ultrasonic method for real-time bolt looseness monitoring using PZT transducer–enabled vibro-acoustic modulation

N Zhao, L Huo, G Song - Journal of Intelligent Material …, 2020 - journals.sagepub.com
A real-time nonlinear ultrasonic method based on vibro-acoustic modulation is applied to
monitor early bolt looseness quantitatively by using piezoceramic transducers. In addition to …

Ultrasonic Lamb wave mixing based fatigue crack detection using a deep learning model and higher-order spectral analysis

S Sampath, J Jang, H Sohn - International Journal of Fatigue, 2022 - Elsevier
Recently, the technique of nonlinear Lamb wave mixing has been developed for the
detection of fatigue crack in engineering structures. In this technique, two or three Lamb …

Frequency selection and time shifting for maximizing the performance of low-frequency guided wave mixing

H Zhu, CT Ng, A Kotousov - NDT & E International, 2023 - Elsevier
Abstract Evaluation of fatigue damage using nonlinear guided wave mixing has been
studied extensively over the past decade. It was found that the combinational harmonics as …

Nonlinear electro-mechanical impedance spectroscopy for fatigue crack monitoring

R Lu, Y Shen, B Zhang, W Xu - Mechanical Systems and Signal Processing, 2023 - Elsevier
This article presents a Nonlinear Electro-Mechanical Impedance Spectroscopy (NEMIS)
methodology for fatigue crack monitoring. Different from the conventional Electro …

An instantaneous-baseline multi-indicial nonlinear ultrasonic resonance spectral correlation technique for fatigue crack detection and quantification

J Wang, Y Shen, D Rao, W Xu - Nonlinear Dynamics, 2021 - Springer
This article presents an instantaneous-baseline multi-indicial nonlinear ultrasonic
resonance spectral correlation technique for fatigue crack detection and quantification. A …

Dynamic probability modeling-based aircraft structural health monitoring framework under time-varying conditions: Validation in an in-flight test simulated on ground

F Fang, L Qiu, S Yuan, Y Ren - Aerospace Science and Technology, 2019 - Elsevier
This paper proposes a dynamic probability modeling-based aircraft Structural Health
Monitoring (SHM) framework which provides a modular hierarchical SHM architecture for the …

[HTML][HTML] Multiphysics simulation method of lamb wave propagation with piezoelectric transducers under load condition

QIU Lei, YAN Xixi, LIN Xiaodong, Y Shenfang - Chinese Journal of …, 2019 - Elsevier
Lamb Wave (LW) simulation under time-varying conditions is an effective and low cost way
to study the problem of the low reliability of the structural health monitoring methods based …

An enhanced dynamic Gaussian mixture model–based damage monitoring method of aircraft structures under environmental and operational conditions

L Qiu, F Fang, S Yuan, C Boller… - Structural Health …, 2019 - journals.sagepub.com
Gaussian mixture model–based structural health monitoring methods have been studied in
recent years to improve the reliability of damage monitoring under environmental and …

Active detection of block mass and notch‐type damages in metallic plates using a refined time‐reversed Lamb wave technique

JK Agrahari, S Kapuria - Structural Control and Health …, 2018 - Wiley Online Library
A recently proposed refined time‐reversed Lamb wave method for baseline‐free damage
detection is tested experimentally for detecting block mass and notch‐type damages in …