Results 21 to 30 of about 201,657 (290)
Mechanical balance laws for fully nonlinear and weakly dispersive water waves [PDF]
Physica D: Nonlinear Phenomena, 2016 The Serre-Green-Naghdi system is a coupled, fully nonlinear system of dispersive evolution equations which approximates the full water wave problem. The system is an extension of the well known shallow-water system to the situation where the waves are long, but not so long that dispersive effects can be neglected.
Henrik Kalisch +2 more
openaire +2 more sources
Splitting of waves in rotor-in-rotor nonlocal metamaterials by internal rotor coupling
Materials & Design, 2022 Mechanical metamaterials can be used to control wave propagation because they are flexibly adjustable. In this paper, a one-dimensional rotor-in-rotor metamaterial with internal rotor coupling is proposed.
Leiyu Yang +3 more
doaj +1 more source
Inspection of Multilayer Pipes Using Longitudinal Guided Waves [PDF]
EPJ Web of ConferencesCurrently, Multilayer pipes are increasingly preferred over single-layer alternatives due to their enhanced mechanical and chemical properties. This research establishes governing equations for longitudinal guided wave propagation in multilayered pipes ...
Drissi Azdine +2 more
doaj +1 more source
The Scientific World Journal, 2020 We present results on the first principle study of the elastic constants and the phonon dispersion of EuFe2As2 at zero pressure. The ground-state energy calculations were performed within Density Functional Theory (DFT) and the generalized gradient ...
N. K. Omboga +2 more
doaj +1 more source
Numerical and Experimental Investigation of Guided Wave Propagation in a Multi-Wire Cable
Applied Sciences, 2019 Ultrasonic guided waves (UGWs) have attracted attention in the nondestructive testing and structural health monitoring (SHM) of multi-wire cables. They offer such advantages as a single measurement, wide coverage of the acoustic field, and long-range ...
Pengfei Zhang +3 more
doaj +1 more source
NUMERICAL SIMULATION OF STRESS WAVE PROPAGATION IN SAP CONCRETE [PDF]
Civil Engineering Journal, 2018 The SAP (Super Absorbent Polymers) concrete is a new kind of concrete materials with uniformly distributed spherical pores with diameter of millimetre-size.
Zhenqun Sang +4 more
doaj +1 more source
Petroleum Exploration and Development, 2023 Based on the measurements of petrological, petrophysical and elastic properties of the samples of different sedimentary facies in the fourth member of Sinian Dengying Formation (Deng 4 Member) in the Sichuan Basin, the diagenetic processes of reservoirs ...
Jiaqing WANG +4 more
doaj +1 more source
Lamb wave dispersion ultrasound vibrometry (LDUV) method for quantifying mechanical properties of viscoelastic solids [PDF]
Physics in Medicine and Biology, 2011 Diastolic dysfunction is the inability of the left ventricle to supply sufficient stroke volumes under normal physiological conditions and is often accompanied by stiffening of the left-ventricular myocardium. A noninvasive technique capable of quantifying viscoelasticity of the myocardium would be beneficial in clinical settings.
Ivan Z, Nenadic +3 more
openaire +2 more sources
Relation between Left Atrial Remodeling in Young Patients with Cryptogenic Stroke and Normal Inter-atrial Anatomy [PDF]
Journal of Stroke, 2015 Background and Purpose To investigate an association between left atrial (LA) structural and P wave dispersion (PWD) during sinus rhythm, and electrical remodeling in cryptogenic stroke (CS) patients. Methods Forty CS patients and 40 age- and sex-matched
Mustafa Gökhan Vural +4 more
doaj +1 more source
Modified wave equation for spinless particles and its solutions in an external magnetic field
, 2013 The wave equation for spinless particles with the Lorentz violating term is considered. We formulate the third-order in derivatives wave equation leading to the modified dispersion relation.
Kruglov, S. I.
core +1 more source