Results 41 to 50 of about 4,693 (226)
Controlling Collective Quasiparticle Dynamics Beyond Decoherence in Topological Interfaces
Laser &Photonics Reviews, EarlyView.Gold nanoparticles placed above a deformed honeycomb plasmonic crystal couple to a chiral topological interface mode. The pseudospin‐split bands ψ+/ ψ− encode spin‐momentum locking, so emitters radiate directionally along the domain wall and share a common phase.
Fatemeh Davoodi
wiley +1 more source
Attenuation Analysis of Lamb Waves Using the Chirplet Transform
EURASIP Journal on Advances in Signal Processing, 2010 Guided Lamb waves are commonly used in nondestructive evaluation to monitor plate-like structures or to characterize properties of composite or layered materials.
Sprenger Helge +4 more
doaj +2 more sources
Theory of Supercritical Coupling and Generalized Bound States in the Continuum
Laser &Photonics Reviews, EarlyView.We develop a general theory of supercritical coupling and generalized bound states in the continuum (gBICs), revealing how interference between radiative and absorptive channels enables quality factors beyond conventional material‐loss limits. The framework unifies non‐Hermitian mode coupling, causality‐driven reactive interactions, and interference ...
Sergio Balestrieri +3 more
wiley +1 more source
Geophysical Research LettersAtmospheric Lamb waveforms are useful for reconstructing large air events, but the propagation of Lamb waves is significantly affected by varying atmospheric conditions. The detailed dispersion of Lamb waves remains vague due to lack of data, but also to
Shenjian Zhang +5 more
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Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor
Sensors, 2013 Recently, an acoustic waveguide sensor based on multiple mode conversion of surface acoustic waves at the solid—liquid interfaces has been introduced for the concentration measurement of binary and ternary mixtures, liquid level sensing, investigation of
Leonhard Michael Reindl +5 more
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Modeling of stress wave propagation in matrix cracked laminates
AIP Advances, 2021 The conventional finite element method can be used for modeling the multiscale phenomenon of the interaction of Lamb waves with matrix cracks, but it requires a lot of computational resources.
Nand Jee Kanu
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Lamb Wave Detection for Structural Health Monitoring Using a ϕ-OTDR System
Sensors, 2022 In this paper, the use of a phase-sensitive optical time-domain reflectometry (ϕ-OTDR) sensor for the detection of the Lamb waves excited by a piezoelectric transducer in an aluminum plate, is investigated.
Rizwan Zahoor +6 more
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Methodologies for Dataset Analysis in Regard to Obtaining Material Characteristics Using Lamb Waves
Macromolecular Symposia, EarlyView.ABSTRACT Nondestructive testing has been a fundamental technique in material characterization for an extended period, offering the distinct advantage of preserving the integrity of the tested specimen. Among the conventional methodologies, the pulse‐echo technique has been widely employed for the determination of the Young's modulus and Poisson's ratio
Andreea‐Denisa Griguța +3 more
wiley +1 more source
Leaky Lamb Wave Radiation from a Waveguide Plate with Finite Width
Applied Sciences, 2020 In this paper, leaky Lamb wave radiation from a waveguide plate with finite width is investigated to gain a basic understanding of the radiation characteristics of the plate-type waveguide sensor.
Sang-Jin Park +2 more
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Excitation of Lamb‐waves in plates [PDF]
PAMM, 2006 AbstractLamb waves show great potential in the detection of structural defects in plate and shell structures. In the sense of the adaptive structures concept the wave generation takes place with help of integrated piezoelectric ceramics. For a steel plate with adhered piezoelectric actuator, analytical calculations, FEM simulations, and experimental ...
S. v. Ende, R. Lammering
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