Dispersion curves of electromagnetically actuated nonlinear monoatomic and mass-in-mass lattice chains

2021 ◽  
pp. 106896
Author(s):  
Soroush Sepehri ◽  
Mahmoud Mosavi Mashhadi ◽  
Mir Masoud Seyyed Fakhrabadi
Keyword(s):  
Dispersion Curves ◽  
Electromagnetically Actuated

PHONON DISPERSION CURVES IN THE MOLECULAR CRYSTALS NAPHTHALENE AND ANTHRACENE MEASURED BY INELASTIC NEUTRON SCATTERING

1981 ◽  
Vol 42 (C6) ◽  
pp. C6-602-C6-604 ◽  
Author(s):  
B. Dorner ◽  
E. L. Bokhenkov ◽  
E. F. Sheka ◽  
S. L. Chaplot ◽  
G. S. Pawley ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Phonon Dispersion ◽  
Inelastic Neutron Scattering ◽  
Molecular Crystals ◽  
Inelastic Neutron ◽  
Dispersion Curves ◽  
Phonon Dispersion Curves

An Electromagnetically Actuated Vacuum Circuit Breaker Developed by Electromagnetic Analysis Coupled with Motion

2004 ◽  
Vol 124 (2) ◽  
pp. 321-326 ◽  
Author(s):  
Toshie Takeuchi ◽  
Takafumi Nakagawa ◽  
Mitsuru Tsukima ◽  
Kenichi Koyama ◽  
Nobumoto Tohya ◽  
...  
Keyword(s):  
Circuit Breaker ◽  
Electromagnetic Analysis ◽  
Vacuum Circuit Breaker ◽  
Electromagnetically Actuated

Recent progress in computing guided waves dispersion curves

2007 ◽  
Author(s):  
Mihai V. Predoi ◽  
Michel Castaings ◽  
Bernard Hosten ◽  
Christophe Bacon
Keyword(s):  
Recent Progress ◽  
Guided Waves ◽  
Dispersion Curves

Numerical extraction of dispersion curves for Lamb wave inspections on complex structures

2007 ◽  
Author(s):  
Stefan Sorohan ◽  
Nicolae Constantin ◽  
Viorel Anghel ◽  
Mircea Gavan
Keyword(s):  
Lamb Wave ◽  
Dispersion Curves ◽  
Complex Structures

Gas motion in the cylindrical helicoid channel without rotation

2012 ◽  
Vol 9 (1) ◽  
pp. 162-164
Author(s):  
S.V. Khabirov
Keyword(s):  
Dispersion Curves ◽  
Phase Changes ◽  
Cylindrical Waves ◽  
Dispersion Ratio

Distribution of plane, spherical and cylindrical waves in steam-gaseous mixes with unequigranular particles and drops when one of fractions participates in phase changes is studied. The dispersion ratio is received, dispersion curves are calculated. Influence of a polydispersity of particles and drops on dispersion and a dissipation of small indignations is analysed.

Design and Preliminary Evaluation of an Electromagnetically Actuated Soft-Tethered Colonoscope

2021 ◽  
pp. 1-1
Author(s):  
Yehui Li ◽  
Cheng Guo ◽  
Wenci Xin ◽  
Tianle Pan ◽  
Weibing Li ◽  
...  
Keyword(s):  
Preliminary Evaluation ◽  
Electromagnetically Actuated

scholarly journals Velocity structure and radial anisotropy of the lithosphere in southern Madagascar from surface wave dispersion

2020 ◽  
Vol 224 (3) ◽  
pp. 1930-1944 ◽  
Author(s):  
E J Rindraharisaona ◽  
F Tilmann ◽  
X Yuan ◽  
J Dreiling ◽  
J Giese ◽  
...  
Keyword(s):  
Receiver Functions ◽  
Dispersion Curves ◽  
Eastern Coast ◽  
Small Scale ◽  
Seismic Structure ◽  
Lithospheric Thickness ◽  
Velocity Models ◽  
Phase Velocities ◽  
Maximum Value ◽  
Radial Anisotropy

SUMMARY We investigate the upper mantle seismic structure beneath southern Madagascar and infer the imprint of geodynamic events since Madagascar’s break-up from Africa and India and earlier rifting episodes. Rayleigh and Love wave phase velocities along a profile across southern Madagascar were determined by application of the two-station method to teleseismic earthquake data. For shorter periods (<20 s), these data were supplemented by previously published dispersion curves determined from ambient noise correlation. First, tomographic models of the phase velocities were determined. In a second step, 1-D models of SV and SH wave velocities were inverted based on the dispersion curves extracted from the tomographic models. As the lithospheric mantle is represented by high velocities we identify the lithosphere–asthenosphere boundary by the strongest negative velocity gradient. Finally, the radial anisotropy (RA) is derived from the difference between the SV and SH velocity models. An additional constraint on the lithospheric thickness is provided by the presence of a negative conversion seen in S receiver functions, which results in comparable estimates under most of Madagascar. We infer a lithospheric thickness of 110−150 km beneath southern Madagascar, significantly thinner than beneath the mobile belts in East Africa (150−200 km), where the crust is of comparable age and which were located close to Madagascar in Gondwanaland. The lithospheric thickness is correlated with the geological domains. The thinnest lithosphere (∼110 km) is found beneath the Morondava basin. The pre-breakup Karoo failed rifting, the rifting and breakup of Gondwanaland have likely thinned the lithosphere there. The thickness of the lithosphere in the Proterozoic terranes (Androyen and Anosyen domains) ranges from 125 to 140 km, which is still ∼30 km thinner than in the Mozambique belt in Tanzania. The lithosphere is the thickest beneath Ikalamavony domain (Proterozoic) and the west part of the Antananarivo domain (Archean) with a thickness of ∼150 km. Below the eastern part of Archean domain the lithosphere thickness reduces to ∼130 km. The lithosphere below the entire profile is characterized by positive RA. The strongest RA is observed in the uppermost mantle beneath the Morondava basin (maximum value of ∼9 per cent), which is understandable from the strong stretching that the basin was exposed to during the Karoo and subsequent rifting episode. Anisotropy is still significantly positive below the Proterozoic (maximum value of ∼5 per cent) and Archean (maximum value of ∼6 per cent) domains, which may result from lithospheric extension during the Mesozoic and/or thereafter. In the asthenosphere, a positive RA is observed beneath the eastern part Morondava sedimentary basin and the Proterozoic domain, indicating a horizontal asthenospheric flow pattern. Negative RA is found beneath the Archean in the east, suggesting a small-scale asthenospheric upwelling, consistent with previous studies. Alternatively, the relatively high shear wave velocity in the asthenosphere in this region indicate that the negative RA could be associated to the Réunion mantle plume, at least beneath the volcanic formation, along the eastern coast.

Inversion of Rayleigh wave dispersion curves via adaptive GA and nested DLS

2019 ◽  
Vol 218 (1) ◽  
pp. 547-559 ◽  
Author(s):  
Yuhang Lei ◽  
Hongyan Shen ◽  
Xinxin Li ◽  
Xin Wang ◽  
Qingchun Li
Keyword(s):  
Rayleigh Wave ◽  
Wave Dispersion ◽  
Dispersion Curves ◽  
Rayleigh Wave Dispersion
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