Results 1 to 10 of about 260,156 (333)

Dispersion Analysis of Plane Wave Propagation in Lattice-Based Mechanical Metamaterial for Vibration Suppression

Aerospace
Phononic crystals based on lattice structures provide important wave dispersion characteristics as band structures, showing excellent compatibility with additive manufacturing.
Natsuki Tsushima, Yuta Hayashi, Tomohiro Yokozeki   +2 more
doaj   +5 more sources

Determinants of Human Corneal Mechanical Wave Dispersion for In Vivo Optical Coherence Elastography. [PDF]

Transl Vis Sci Technol
To characterize frequency-dependent wave speed dispersion in the human cornea using microliter air-pulse optical coherence elastography (OCE), and to evaluate the applicability of Lamb wave theory for determining corneal elastic modulus using high-frequency symmetric (S0) and anti-symmetric (A0) guided waves in cornea.Wave speed dispersion analysis for
Duvvuri C, Singh M, Lan G, Aglyamov SR, Larin KV, Twa MD.   +5 more
europepmc   +4 more sources

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, Matthew W Urban, James F Greenleaf   +2 more
exaly   +4 more sources

Dynamic response of tri-layered functionally graded-viscoelastic-piezomagnetic cylindrical tunnel excited by circumferential shear horizontal waves [PDF]

Scientific Reports
This manuscript presents a detailed analytical study on the propagation behavior of circumferential shear horizontal (SH) waves in a tri-layered cylindrical composite structure, comprising an inner functionally graded (FG) layer, a viscoelastic (VE ...
Vipin Gupta, Aymen Flah, Murat Yaylacı, Abhik Sur, Ivo Pergl, Mohammad Ghatasheh, Soumik Das   +6 more
doaj   +2 more sources

Measuring mechanical wave speed, dispersion, and viscoelastic modulus of the cornea using optical coherence elastography

Optics Express, 2019
Acoustic wave velocity measurement based on optical coherence tomography (OCT) is a promising approach to assess the mechanical properties of biological tissues and soft materials. While studies to date have demonstrated proof of concept of different ways to excite and detect mechanical waves, the quantitative performance of this modality as mechanical
Antoine Ramier, Behrouz Tavakol, Seok-Hyun Yun   +2 more
openaire   +3 more sources

Capturing wave dispersion in heterogeneous and microstructured materials through a three-length-scale gradient elasticity formulation

Journal of the Mechanical Behavior of Materials, 2018
Long-range interactions occurring in heterogeneous materials are responsible for the dispersive character of wave propagation. To capture these experimental phenomena without resorting to molecular and/or atomistic models, generalized continuum theories ...
De Domenico Dario, Askes Harm, Aifantis Elias C.   +2 more
doaj   +2 more sources

Quantum-modified photo-thermoelastic wave propagation in semiconductors with temperature-dependent thermal conductivity [PDF]

Scientific Reports
A generalized quantum-modified photo-thermoelastic model is developed to investigate wave propagation in semiconductor media subjected to ramp-type laser heating while accounting for temperature-dependent thermal conductivity.
Samar Alshalhoub, Fulin Shang, Gamal M. Ismail, Lotfi Jlali, Ibrahim S. Elshazly, Khaled Lotfy   +5 more
doaj   +2 more sources

Non-contact electroelastic modulation of conventional media leveraging two-way electromagnetic induction [PDF]

Communications Engineering
This research reports the synthesis of a wave altering non-contact design. Resonators enable vibration and wave modulation, but typically require mechanical attachments that modify host properties and limit retrofit. Inspired by remote field technologies,
Joshua Dupont, Richard Christenson, Jiong Tang   +2 more
doaj   +2 more sources

Shear Wave Dispersion Ultrasound Vibrometry Based on a Different Mechanical Model for Soft Tissue Characterization

Journal of Ultrasound in Medicine, 2012
Ultrasound vibrometry can measure the propagation velocity of shear waves in soft tissue noninvasively, and the shear moduli of tissue can be estimated inversely from the velocities at multiple frequencies. It is possible to choose the appropriate model for tissue characterization from mathematical methods and analysis of model behaviors.
Ke, Chen, Aiping, Yao, Eugene E, Zheng, Jiangli, Lin, Yi, Zheng   +4 more
openaire   +3 more sources

Ab Initio Study of Mechanical and Vibrational Characteristics of Uranium Monoxide in Nuclear Reactor [PDF]

Journal of Nuclear Research and Applications, 2023
In this research, the mechanical and phonon properties of UO in the rock-salt phase have been calculated systematically using density functional theory and ab-initio method in projector augmented wave pseudopotentials parameterization.
M. H. Sahafi, E. Cholaki
doaj   +1 more source