Results 41 to 50 of about 1,046 (190)

Crustal attenuation structure of the Tianshan tectonic belt and its spatiotemporal variations

open access: yesFrontiers in Earth Science, 2023
The quality factor value (Q) of the crustal medium, which can describe the anelasticity within the Earth’s interior, is a sensitive indicator of changes in the crystalline structure induced by temperature and phase transformations.
Jin Li   +4 more
doaj   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

open access: yesDeep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu   +8 more
wiley   +1 more source

Effect of Hydrogen on the Elastic and Anelastic Properties of the R Phase in Ti50Ni46.1Fe3.9 Alloy

open access: yesMetals, 2017
The linear and non-linear internal friction, effective Young’s modulus, and amplitude-dependent modulus defect of a Ti50Ni46.1Fe3.9 alloy have been studied after different heat treatments, affecting hydrogen content, at temperatures of 13–300 K, and ...
Konstantin Sapozhnikov   +4 more
doaj   +1 more source

Stratospheric influence on tropical cyclone evolution

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
We developed a metric based on moist static energy to detect and quantify the intrusion of stratospheric air into the inner core of tropical cyclones. High‐resolution numerical simulations show that this stratospheric interaction forms warm anomalies (high‐level warm cores) in the upper troposphere.
Andrea Davin   +4 more
wiley   +1 more source

NanoDMA and Nanoscratch Study of (Visco)‐Elastic and Plastic Behaviors of a Thin Film of a Molecular Spin Crossover Complex

open access: yesSmall, EarlyView.
Thin films of a molecular spin crossover complex are investigated across its thermally induced spin transition using quasi‐static and dynamic indentation techniques as well as nanoscratch experiments. When going from the low‐spin to the high‐spin state a sudden drop of elastic modulus is observed, but only a weak modulus relaxation occurs at the ...
Maryam Nasimsobhan   +4 more
wiley   +1 more source

Alfvén QPOs in magnetars in the anelastic approximation [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2009
We perform two-dimensional simulations of Alfven oscillations in magnetars, modeled as relativistic stars with a dipolar magnetic field. We use the anelastic approximation to general relativistic magnetohydrodynamics, which allows for an effective suppression of fluid modes and an accurate description of Alfven waves.
PABLO CERDÁ-DURÁN   +2 more
openaire   +5 more sources

Crack Process Investigation in Gears Under Single Tooth Bending Fatigue Condition Using Infrared Thermography and 3D XFEM Numerical Models

open access: yesFatigue &Fracture of Engineering Materials &Structures, EarlyView.
ABSTRACT The present study proposes a combined approach of infrared thermography and 3D XFEM numerical models for crack process investigation in mechanical components such as gears. Over the years, fatigue crack analysis based on energy dissipations in the form of heat generated during fatigue tests has been widely reported, although mainly limited to ...
Luca Corsaro   +3 more
wiley   +1 more source

“Measures of Dissipation in Viscoelastic Media” Extended: Toward Continuous Characterization Across Very Broad Geophysical Time Scales

open access: yesGeophysical Research Letters, 2019
We develop a conceptual/quantitative framework whereby measurements of Earth's viscoelasticity may be assessed across the broad range of geophysical processes, spanning seismic wave propagation, postseismic relaxation, glacial isostatic adjustment, and ...
Harriet C. P. Lau, Benjamin K. Holtzman
doaj   +1 more source

Influence of water ageing on variation in space charge and thermo‐mechanical properties of epoxy micro‐nano composites

open access: yesIET Science, Measurement & Technology, 2021
Water ageing was carried out with epoxy micro–nano composite specimen. Silica micro particles and ion trapping nano particles were used as filler material in the composite specimens.
Myneni Sukesh Babu   +3 more
doaj   +1 more source

Mechanism of Anelasticity [PDF]

open access: yesGeophysical Journal International, 1988
SUMMARY to modem vector processors-‘supercomputers’-now makes possible extremely large-scale seismological computations, in which the anelasticity of the earth can be treated in an exact manner. For this exact formalism to be physically meaningful, it must be shown to be consistent with a convincing physical model of anelasticity.
openaire   +1 more source

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