Results 41 to 50 of about 6,744 (161)

Ground strains induced by the 2022 Hunga-Tonga volcanic eruption, observed by a 1500-m laser strainmeter at Kamioka, Japan

Earth, Planets and Space, 2023
In this study, we detected the horizontal ground strains induced by the atmospheric Lamb wave emitted from the 2022 eruption of the Tonga–Hunga Ha’apai undersea volcano, at an underground observatory in Kamioka, Japan.
Akiteru Takamori, Akito Araya, Kouseki Miyo, Tatsuki Washimi, Takaaki Yokozawa, Hideaki Hayakawa, Masatake Ohashi   +6 more
doaj   +1 more source

A non-destructive technique using digital holographic vibrometry and Lamb waves for quality determination of polymer-metal laminates

Scientific Reports, 2022
We used digital holographic vibrometry (DHV) as a non-destructive method to detect debonding areas in laminates made of aluminum and polymer (polylactide, polyvinylidene fluoride or polycarbonate). At low frequencies (up to 30 kHz) $$A_0$$ A 0 Lamb waves
Jagoda Nowak-Grzebyta, Ewa Stachowska, Frans Meijer, Tomasz Sterzyǹski   +3 more
doaj   +1 more source

Construction of a mathematical model of lamb wave propagation in a steel pipeline with a protective outer coating

Известия высших учебных заведений: Проблемы энергетики, 2022
THE PURPOSE. Adapt the method of measuring the propagation of Lamb waves in thin two-layer plates to the study of the dependence of the phase velocity on the technical condition of pipelines with a protective outer coating.
S. O. Gaponenko, A. E. Kondratiev, G. R. Mustafina   +2 more
doaj   +1 more source

Nonlinear Lamb Wave Micro-Crack Direction Identification in Plates with Mixed-Frequency Technique

Applied Sciences, 2020
This paper investigates the direction identification of micro-cracks with nonlinear components generated by Lamb wave with frequency-mixing technique. Three-dimensional finite element simulations were carried out to investigate the interaction mechanism ...
Liqiang Guan, Mingxia Zou, Xili Wan, Yifeng Li   +3 more
doaj   +1 more source

Identification and Compensation Technique of Non-Uniform Temperature Field for Lamb Wave-and Multiple Sensors-Based Damage Detection

Sensors, 2019
Lamb wave-based damage detection for large-scale composites is one of the most prosperous structural health monitoring technologies for aircraft structures.
Hu Sun, Junyan Yi, Yu Xu, Yishou Wang, Xinlin Qing   +4 more
doaj   +1 more source

Numerical Time-Domain Modeling of Lamb Wave Propagation Using Elastodynamic Finite Integration Technique

Shock and Vibration, 2014
This paper presents a numerical model of lamb wave propagation in a homogenous steel plate using elastodynamic finite integration technique (EFIT) as well as its validation with analytical results.
Hussein Rappel, Aghil Yousefi-Koma, Jalil Jamali, Ako Bahari   +3 more
doaj   +1 more source

Non-Semisimple Degeneracy of Lamb Waves

Mechanics of Solids
Abstract Anomalous guided waves appearing at a non-semisimple degeneracy of the fundamental matrix are observed and analyzed in the framework of the Cauchy sextic formalism. The non-semisimple degeneracy condition is explicitly constructed for the most general case of Lamb waves propagating in a traction-free ...
Karakozova, A. I., Kuznetsov, S. V.
openaire   +2 more sources

Mode Separation for Multimodal Ultrasonic Lamb Waves Using Dispersion Compensation and Independent Component Analysis of Forth-Order Cumulant

Applied Sciences, 2019
Ultrasonic Lamb wave testing has been successfully applied in nondestructive testing. However, because of Lamb wave multimodal and dispersion characteristics, the received signals are often multimodal and overlapping, which makes them very complicated ...
Xiao Chen, Dandan Ma
doaj   +1 more source

Clamping Resonators for Low-Frequency S0 Lamb Wave Reflection

Applied Sciences, 2019
A recent elastic metamaterial study found that resonators that “clamp” a plate waveguide can be used to create a frequency stop-band gap. The result was that the resonator array can prohibit the propagation of an A0 Lamb wave mode. This study
Christopher Hakoda, Cliff J. Lissenden, Parisa Shokouhi   +2 more
doaj   +1 more source

Five-Stage Fast Charging of Lithium-Ion Batteries Based on Lamb Waves Depolarization

Energies
Lithium-ion batteries are essential for the development of consumer electronics and electric vehicles due to their high energy density, low self-discharge rate, and easy maintenance.
Tong Wang, Wei Liang
doaj   +1 more source