Comparison between elastic and porous elastic material models for sediment acoustical behavior in an aluminum-sediment double layer
Sign Up to like & getrecommendations! Published in 2021 at "Journal of The Brazilian Society of Mechanical Sciences and Engineering"
DOI: 10.1007/s40430-021-02988-5
Abstract: In this paper, Lamb waves dispersion curves are extracted for a double layer aluminum-sediment (gypsum) plate, both numerically and experimentally. For this purpose, the gypsum elastic properties are approximately calculated using ultrasonic bulk waves method.… read more here.
Keywords: aluminum; model; porous elastic; dispersion curves ... See more keywords
Estimation of the Lamb wave phase velocity dispersion curves using only two adjacent signals
Sign Up to like & getrecommendations! Published in 2020 at "Composite Structures"
DOI: 10.1016/j.compstruct.2020.113174
Abstract: Abstract Lamb waves are used in various non-destructive testing (NDT) and structural health monitoring (SHM) applications due to their velocity sensitivity to the properties of the material and their propagation over the entire thickness of… read more here.
Keywords: velocity; velocity dispersion; phase velocity; dispersion ... See more keywords
Waves in a generally anisotropic viscoelastic composite laminated bilayer: Impact of the imperfect interface from perfect to complete delamination
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Solids and Structures"
DOI: 10.1016/j.ijsolstr.2020.05.031
Abstract: Abstract Composite laminates are usually made of anisotropic viscoelastic materials with layer-dependent properties. Although such structures are advantageous over the traditional single-material structure, their interfacial damage/failure is a great concern. In this paper, we present… read more here.
Keywords: complete delamination; imperfect interface; anisotropic viscoelastic; interface ... See more keywords
Lithospheric seismic structure beneath two broadband station sites of the eastern part of Chhotanagpur Plateau: New constraints from receiver functions and dispersion curves
Sign Up to like & getrecommendations! Published in 2019 at "Physics of the Earth and Planetary Interiors"
DOI: 10.1016/j.pepi.2019.01.004
Abstract: Abstract The Chhotanagpur Plateau in eastern India was formed due to the severe upheaval of tectonic forces deep inside the earth. The deep geological processes associated with its subsurface along with geodynamical rationales are never… read more here.
Keywords: receiver functions; station; eastern part; part chhotanagpur ... See more keywords
Universal dispersion curves of a planar waveguide with an exponential graded-index guiding layer and a nonlinear cladding
Sign Up to like & getrecommendations! Published in 2021 at "Results in physics"
DOI: 10.1016/j.rinp.2020.103734
Abstract: Abstract A planar waveguide consisting of three layers is considered. The guiding layer is assumed of exponentially graded index of refraction. The cover layer is a nonlinear material of Kerr-type. The refractive index distribution of… read more here.
Keywords: index; layer; planar waveguide; dispersion curves ... See more keywords
Estimation of rail properties using semi-analytical finite element models and guided wave ultrasound measurements.
Sign Up to like & getrecommendations! Published in 2019 at "Ultrasonics"
DOI: 10.1016/j.ultras.2018.12.015
Abstract: Guided wave based monitoring systems require accurate knowledge of mode propagation characteristics such as wavenumber and group velocity dispersion curves. These characteristics may be computed numerically for a rail provided that the material and geometric… read more here.
Keywords: semi analytical; rail; rail properties; guided wave ... See more keywords
High-resolution Lamb waves dispersion curves estimation and elastic property inversion.
Sign Up to like & getrecommendations! Published in 2021 at "Ultrasonics"
DOI: 10.1016/j.ultras.2021.106427
Abstract: Ultrasonic Lamb waves have been widely used for non-destructive evaluation and testing. However, the inversion from the measured guided signals to the material properties is still a challenging task in terms of multimodal dispersive signal… read more here.
Keywords: high resolution; inversion; lamb waves; dispersion ... See more keywords
Error analysis and reliability of zero-order Lamb mode inversion for waveguide characterization.
Sign Up to like & getrecommendations! Published in 2022 at "Ultrasonics"
DOI: 10.1016/j.ultras.2022.106703
Abstract: In recent years, several fitting techniques have been presented to reconstruct the parameters of a plate from its Lamb wave dispersion curves. Published studies show that these techniques can yield high accuracy results and have… read more here.
Keywords: lamb; dispersion; dispersion curves; mode ... See more keywords
Estimation of the dispersion curves of pipe guided waves by field measurement
Sign Up to like & getrecommendations! Published in 2020 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2020.106693
Abstract: Abstract The guided-wave-based non-destructive testing (NDT) technologies have been widely used for long range inspection of pipelines. Due to the dispersion and multi-modes characteristics of guided waves, the signal interpretation relies on the knowledge of… read more here.
Keywords: field measurement; dispersion; estimation; dispersion curves ... See more keywords
On the Energy-Momentum Spectrum and One-Meson Dispersion Curves in (3 + 1)-Dimensional Strongly Coupled Lattice QCD with three Flavors
Sign Up to like & getrecommendations! Published in 2019 at "Reports on Mathematical Physics"
DOI: 10.1016/s0034-4877(19)30040-0
Abstract: We use an imaginary-time formulation of quantum field theory to analyze a lattice QCD model with the improved Wilson action on a Euclidean (3 + 1)-dimensional unit hypercubic lattice, with three quark flavors, local SU(3)… read more here.
Keywords: dispersion; lattice; momentum; meson ... See more keywords
Rapid observation of dispersion curves in system-on-chip devices
Sign Up to like & getrecommendations! Published in 2023 at "Review of Scientific Instruments"
DOI: 10.1063/5.0142637
Abstract: We have developed a rapid detection instrument to characterize the behavior of light on the surface of devices during light–matter interactions. The equipment enables the non-destructive and real-time observations of the dispersion curves for microstructures,… read more here.
Keywords: system chip; chip devices; chip; dispersion curves ... See more keywords