Results 1 to 10 of about 2,283 (117)
Geophysical Research Letters, 2016 Torsional Alfvén waves propagating in the Earth's core have been inferred by inversion techniques applied to geomagnetic models. They appear to propagate across the core but vanish at the equator, exchanging angular momentum between core and mantle ...
Nathanaël Schaeffer, Dominique Jault
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New Torsional Surface Elastic Waves in Cylindrical Metamaterial Waveguides for Sensing Applications [PDF]
SensorsIn this paper, we demonstrate that torsional surface elastic waves can propagate along the curved surface of a metamaterial elastic rod (cylinder) embedded in a conventional elastic medium.
Piotr Kiełczyński +2 more
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A high load torsion pendulum of trifilar suspension magnetic damper for inertial sensor test [PDF]
Scientific ReportsSpace-based gravitational waves (GW) detection requires the residual noise spectral density of the inertial sensors to reach $$10^{-15}\textrm{m}\cdot \textrm{s}^{-2}\cdot \textrm{Hz}^{-1/2}$$ from 0.1 mHz to 1Hz.
Hongfan Liu +7 more
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Hydrodynamics of a twisting slender swimmer [PDF]
Royal Society Open Science, 2020 Sea snakes propel themselves by lateral deformation waves moving backwards along their bodies faster than they swim. In contrast to typical anguilliform swimmers, however, their swimming is characterized by exaggerated torsional waves that lead the ...
Gil Iosilevskii, Alexander Rashkovsky
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Alexandria Engineering Journal, 2022 The effects of small length scale on the torsional surface waves propagating in a pre-stressed dissipative nanoplate were examined in this paper. Biot’s incremental deformation principle as well as nonlocal elasticity theory were implemented to form the ...
Mahmoud M Selim +2 more
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Contributions to Geophysics and Geodesy, 2022 Versus the theory of fully stochastically mechanism of geomagnetic jerks based on the buoyant force driven Quasi-Geostrophic (QG) dynamo, the torsional waves in realistic condition of the Earth's core evolve in the intradecadal time scales.
Mohsen LUTEPHY +2 more
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Measurement of Stress Waves Propagation in Percussive Drilling
Sensors, 2021 This work describes the results of a test campaign aimed to measure the propagation of longitudinal, torsional, and flexural stress waves on a drill bit during percussive rock drilling.
Diego Scaccabarozzi, Bortolino Saggin
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Circumferential Damage Monitoring of Steel Pipe Using a Radar Map Based on Torsional Guided Waves
Sensors, 2023 Ultrasonic guided wave technology has been successfully applied to detect multiple types of defects in pipes. However, the circumferential location and coverage of a defect are less studied because it is difficult to determine.
Zhupeng Zheng, Zihao Zhang
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Applied Sciences, 2022 Quantification of damage sizes in cylindrical structures such as pipes and rods is of paramount importance in various industries. This work proposes an efficient damage quantification method by using a dry-point-contact (DPC) transducer based on the non ...
Shengbo Shan, Yongdong Pan, Shengyu Xiao
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International Journal of Applied Mechanics and Engineering, 2018 The present paper studies the effect of circular regularity on propagation of torsional surface waves in an elastic non-homogeneous half-space. Both rigidity and density of the half-space are assumed to vary inversely linearly with depth.
M. Sethi, A.K. Sharma, A. Sharma
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