A Mode-Switchable Guided Elastic Wave Transducer
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Nondestructive Evaluation"
DOI: 10.1007/s10921-020-00690-5
Abstract: Increasing the safety demands of various progressively complex structures (e.g., in aerospace, automotive engineering, and wind power technology) and the parallel goal of reducing inspection costs set new objectives in the field of ultrasonics and… read more here.
Keywords: elastic wave; mode switchable; switchable guided; wave ... See more keywords
Hybrid absorbing boundary condition for three-dimensional elastic wave modeling
Sign Up to like & getrecommendations! Published in 2017 at "Applied Geophysics"
DOI: 10.1007/s11770-017-0623-z
Abstract: Edge reflections are inevitable in numerical modeling of seismic wavefields, and they are usually attenuated by absorbing boundary conditions. However, the commonly used perfectly matched layer (PML) boundary condition requires special treatment for the absorbing… read more here.
Keywords: elastic wave; three dimensional; boundary condition; wave ... See more keywords
Evaluating elastic wave velocities in Brazilian municipal solid waste
Sign Up to like & getrecommendations! Published in 2019 at "Environmental Earth Sciences"
DOI: 10.1007/s12665-019-8490-y
Abstract: The sanitary landfills in Brazil are, generally, characterized by their high organic material content (around 60%), presence of different types of mixed wastes, and low compaction energy, which differentiates them from the landfills of developed… read more here.
Keywords: elastic wave; wave velocities; evaluating elastic; municipal solid ... See more keywords
A Trefftz-discontinuous Galerkin method for time-harmonic elastic wave problems
Sign Up to like & getrecommendations! Published in 2019 at "Computational and Applied Mathematics"
DOI: 10.1007/s40314-019-0900-y
Abstract: In this paper, we develop a plane wave discontinuous Galerkin method combined with local spectral element method for the elastic wave propagation in two and three space dimensions. We derive the error estimates of the… read more here.
Keywords: elastic wave; discontinuous galerkin; method time; trefftz discontinuous ... See more keywords
3D-printed phononic crystal lens for elastic wave focusing and energy harvesting
Sign Up to like & getrecommendations! Published in 2019 at "Additive Manufacturing"
DOI: 10.1016/j.addma.2019.100780
Abstract: Abstract We explore elastic wave focusing and enhanced energy harvesting by means of a 3D-printed Gradient-Index Phononic Crystal Lens (GRIN-PCL) bonded on a metallic host structure. The lens layer is fabricated by 3D printing a… read more here.
Keywords: wave focusing; elastic wave; energy; energy harvesting ... See more keywords
A numerical approximation of the two-dimensional elastic wave scattering problem via integral equation method
Sign Up to like & getrecommendations! Published in 2017 at "Applied Numerical Mathematics"
DOI: 10.1016/j.apnum.2016.11.009
Abstract: In this paper, a numerical method is proposed to approximate the solution of a two-dimensional scattering problem of time-harmonic elastic wave from a rigid obstacle. By Helmholtz decomposition, the scattering problem is reduced to a… read more here.
Keywords: elastic wave; integral equation; method; two dimensional ... See more keywords
Convergence of an adaptive finite element DtN method for the elastic wave scattering by periodic structures
Sign Up to like & getrecommendations! Published in 2020 at "Computer Methods in Applied Mechanics and Engineering"
DOI: 10.1016/j.cma.2019.112722
Abstract: Abstract Consider the scattering of a time-harmonic elastic plane wave by a periodic rigid surface. The elastic wave propagation is governed by the two-dimensional Navier equation. Based on a Dirichlet-to-Neumann (DtN) map, a transparent boundary… read more here.
Keywords: elastic wave; finite element; adaptive finite; method ... See more keywords
Elastic wave propagation in 3-D periodic composites: Band gaps incorporating microstructure effects
Sign Up to like & getrecommendations! Published in 2018 at "Composite Structures"
DOI: 10.1016/j.compstruct.2018.07.115
Abstract: Abstract A new model for determining band gaps for elastic wave propagation in three-dimensional (3-D) periodic two-phase composites is developed using a modified couple stress theory that accounts for microstructure effects. Three types of composites,… read more here.
Keywords: elastic wave; microstructure effects; wave propagation; band gaps ... See more keywords
Reconstruction of fracture geometry in material medium by elastic wave
Sign Up to like & getrecommendations! Published in 2021 at "Construction and Building Materials"
DOI: 10.1016/j.conbuildmat.2021.123001
Abstract: Abstract Over the past few years, intelligent detection and fast and precise positioning for fracture have been hotspots in the field of geological engineering. The propagation of elastic wave in fracture inclusive one-dimensional line segment… read more here.
Keywords: plane; reconstruction; fracture; geometry ... See more keywords
Elastic wave based evaluation of CFRP protected RC structures subjected to corrosion
Sign Up to like & getrecommendations! Published in 2021 at "Construction and Building Materials"
DOI: 10.1016/j.conbuildmat.2021.123081
Abstract: Abstract Determination of the state of hidden corrosion propagation inside concrete continues to be a major challenge for the evolving structural health monitoring industry. Numerous techniques such as Elastic wave-based methods, vibration-based methods, Electrochemical techniques,… read more here.
Keywords: mpa mpa; protection; wave based; subjected corrosion ... See more keywords
Stable elastic wave band-gaps of phononic crystals with hyperelastic transformation materials
Sign Up to like & getrecommendations! Published in 2017 at "Extreme Mechanics Letters"
DOI: 10.1016/j.eml.2016.11.007
Abstract: Abstract The elastic wave band structure in a phononic crystal (PC) is usually affected by the deformations in its soft constituent phase. In this work, hyperelastic transformation materials are proposed in the design of PCs… read more here.
Keywords: elastic wave; hyperelastic transformation; transformation materials; wave ... See more keywords