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Dispersion curve analysis method for Lamb wave mode separation
Structural Health Monitoring, 2020The Lamb wave inspection has emerged as a promising method for structural health monitoring and nondestructive testing. However, because of the highly dispersive and multimodal features, the Lamb wave mode separation has become a challenging problem ...
Yue Hu +4 more
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Phonon dispersion curves of bcc Ba
Physical Review B, 1985Large single crystals of bcc Ba were grown and were used to study the lattice dynamics of this divalent metal by inelastic neutron scattering. The phonon dispersion curves were measured, at room temperature, along the (xi00), (xixi0), and (xixixi) symmetry directions.
, Mizuki, , Chen, , Ho, , Stassis
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Research On Dispersion Curves Of Masw
20th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, 2007The multichannel analysis of surface wave (MASW) method has been effectively used to determine near-surface shear (S)-wave velocity and map bedrock. Estimating the S-wave velocity profile from Rayleigh-wave measurements is straightforward. A three-step process is required to obtain S-wave velocity profiles: acquisition of a multiple number of ...
Yinhe Luo +4 more
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Phonon dispersion curves of CsCN
Pramana, 2004The motivation for the present work was gained from the recent publication on phonon dispersion curves (PDCs) of CsCN from the neutron scattering technique. We have applied the extended three-body force shell model (ETSM) by incorporating the effect of coupling between the translation modes and the orientation of cyanide molecules for the description ...
N. K. Gaur +4 more
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Taylor Dispersion in Curved Channels
SIAM Journal on Applied Mathematics, 1997Summary: The Taylor dispersion problem is to determine the long-time behavior of the concentration density of a passive scalar (contaminant) diffusing in an incompressible channel flow, given an initial injection of contaminant which is slowly varying-order \(\varepsilon\)-in the longitudinal direction. \textit{G. Taylor} [Proc. R. Soc. Lond., Ser.
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Phonon dispersion curves of indium
Journal of Physics F: Metal Physics, 1981Using the modified axially symmetric model with volume forces, the phonon frequencies of indium have been investigated. The lattice structure of indium has been treated as both BCT and FCT in order to avoid the confusion created in the past in understanding the crystallographic equivalence of these two lattices.
V Ramamurthy, S B Rajendraprasad
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Geophysical Journal International, 2021
Ambient noise surface wave methods have gained much attention among geophysical and civil engineering communities because of their capability of determining near-surface shear wave velocities in highly populated urban areas.
Chaoqiang Xi +5 more
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Ambient noise surface wave methods have gained much attention among geophysical and civil engineering communities because of their capability of determining near-surface shear wave velocities in highly populated urban areas.
Chaoqiang Xi +5 more
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Interpretation of phonon dispersion curves
Solid State Communications, 1963Abstract The striking fact which has emerged from the experimental studies by neutron spectroscopy of alkali halides, covalent elements, and metals is the existence of long range forces in all three classes of solids. The concept of a force constant has never played a very important part in interpreting the results for alkali halides, since the ...
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Phonon dispersion curves for niobium
Journal of Physics F: Metal Physics, 1980A previously propose phenomenological screened-shell model is extended to include the tangential component of a two-body of between nearest and next-nearest ion-cores and a second-nearest-neighbour radial shell force. The resulting model contains nine parameters, three of which are obtained from the elastic constants, three from the experimental values
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