Results 31 to 40 of about 1,173,580 (298)

Pressure shock fronts formed by ultra-fast shear cracks in viscoelastic materials

open access: yesNature Communications, 2018
Propagating shear cracks in solids emit both shear and pressure waves, but it is usually thought that only shear waves coalesce to form shock fronts when the crack exceeds the shear wave speed.
M. Gori   +3 more
doaj   +1 more source

In-situ ultrasonic shear wave sensing of thin metallic coatings on journal bearing shells

open access: yesFriction
Ultrasonic testing using shear polarised waves is widely applied in medical and engineering fields, commonly employed for hardness or stress measurement.
Liqun Wu   +4 more
doaj   +1 more source

Field Tests for Generating Source System and Picking the Seismic Shear Waves to Meet the Engineering Purposes Requirements. [PDF]

open access: yesKirkuk Journal of Science, 2019
Many seismic field tests were carried for the designed and modified seismic apparatuses using to generate seismic shear waves. These apparatus includes: "wooden plank" horizontal traction shear wave source, and a modified geophone for picking the SH-Wave
Muhana Ahmed
doaj   +1 more source

Shear Wave Elastography Based on Noise Correlation and Time Reversal

open access: yesFrontiers in Physics, 2021
Shear wave elastography (SWE) relies on the generation and tracking of coherent shear waves to image the tissue's shear elasticity. Recent technological developments have allowed SWE to be implemented in commercial ultrasound and magnetic resonance ...
Javier Brum   +3 more
doaj   +1 more source

The steady-state form of large-amplitude internal solitary waves [PDF]

open access: yes, 2010
A new numerical scheme for obtaining the steady-state form of an internal solitary wave of large amplitude is presented. A stratified inviscid two-dimensional fluid under the Boussinesq approximation flowing between horizontal rigid boundaries is ...
King, Stuart Edward   +5 more
core   +1 more source

Shear wave cardiovascular MR elastography using intrinsic cardiac motion for transducer-free non-invasive evaluation of myocardial shear wave velocity

open access: yesScientific Reports, 2021
Changes in myocardial stiffness may represent a valuable biomarker for early tissue injury or adverse remodeling. In this study, we developed and validated a novel transducer-free magnetic resonance elastography (MRE) approach for quantifying myocardial ...
Marian Amber Troelstra   +9 more
doaj   +1 more source

On Love-type waves in a finitely deformed magnetoelastic layered half-space [PDF]

open access: yes, 2012
In this paper, the propagation of Love-type waves in a homogeneously and finitely deformed layered half-space of an incompressible non-conducting magnetoelastic material in the presence of an initial uniform magnetic field is analyzed.
Saxena, P.   +3 more
core   +1 more source

Dynamic Viscosity and Transverse Ultrasonic Attenuation of Engineering Materials

open access: yesApplied Sciences, 2020
In this paper, ultrasonic attenuation of the transverse waves of engineering materials is evaluated, covering metals, ceramics, polymers, fiber-reinforced plastics, and rocks. After verifying experimental methods, 273 measurements are conducted and their
Kanji Ono
doaj   +1 more source

Experiments on a barotropic rotating shear layer. Part 1. Instability and steady vortices [PDF]

open access: yes, 1999
The barotropic shear layer in a rotating fluid is studied in a laboratory experiment. Through the rotation of circular sections in the base and lid of a circular tank relative to a background rotation of the entire system, a vertical layer of strong ...
Read, Peter   +4 more
core   +1 more source

Multi-channel analysis of surface wave method for geotechnical site characterization in Yogyakarta, Indonesia

open access: yesE3S Web of Conferences, 2019
On May 27th 2006, Yogyakarta earthquake happened with 6.3 Mw. It was causing widespread destruction and loss of life and property. The average shear wave velocity to 30 m (Vs30) is useful parameter for classifying sites to predict their potential to ...
Le Ngal Nwai   +5 more
doaj   +1 more source

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