Results 81 to 90 of about 81,958 (286)
Graphene‐Based Pressure Sensor Application in Non‐Invasive Pulse Wave Velocity Continuous Estimation
Advanced Materials Technologies, Volume 10, Issue 5, March 4, 2025.A non‐invasive device prototype for pulse wave velocity (PWV) measurement is presented, based on a piezoelectric graphene pressure sensor incorporating advanced electronic components and data analysis tools. Tests performed within clinical environment, showed statistical similarity to results obtained using the established standard for PWV estimation ...
Irene Buraioli +9 more
wiley +1 more source
Stabilization of Hypersonic Boundary Layers by Porous Coatings [PDF]
, 2001 A second-mode stability analysis has been performed for a hypersonic boundary layer on a wall covered by a porous coating with equally spaced cylindrical blind microholes.
Fedorov, Alexander V. +2 more
core +1 more source
Advanced Science, Volume 12, Issue 10, March 13, 2025.A functionally graded oxide scale comprising a dense top layer and an underlying fine‐grained layer with a grain size gradient forms on a multicomponent (Hf,Zr,Ti)B2 coating through Ti content optimization. The former is a superior oxygen barrier, and the latter ensures strain tolerance, collectively manifesting the coating's exceptional ablation ...
Junshuai Lv +9 more
wiley +1 more source
Small Methods, Volume 9, Issue 3, March 20, 2025.The two extremes of self‐assembled colloids are stiff perfect crystals and soft perfect glasses. But what happens in between? The answer is provided by elasticity mapping of a wide variety of colloidal glasses – continuous gradient structures, binary mixtures, and more – with scanning micro‐Brillouin light scattering.
Thomas Vasileiadis +5 more
wiley +1 more source
Assessment of a high-order shock-capturing central-difference scheme for hypersonic turbulent flow simulations [PDF]
arXiv, 2021 High-speed turbulent flows are encountered in most space-related applications (including exploration, tourism and defense fields) and represent a subject of growing interest in the last decades. A major challenge in performing high-fidelity simulations of such flows resides in the stringent requirements for the numerical schemes to be used.
arxiv
Rarefied hypersonic flow simulations using the Navier-Stokes equations with non-equilibrium boundary conditions [PDF]
, 2012 This paper investigates the use of Navier-Stokes-Fourier equations with non-equilibrium boundary conditions (BCs) for simulation of rarefied hypersonic flows.
Greenshields, Christopher, Reese, Jason
core +1 more source
Bipolar HiPIMS kick‐pulse for high hardness in high‐entropy boride thin films
Journal of the American Ceramic Society, Volume 108, Issue 3, March 2025.Abstract We report a microhardness indentation study for multicomponent refractory metal boride thin films that belong to the family of high‐entropy ceramics exhibiting superior hardness and high temperature properties. We focus on the nominally equimolar composition (Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)B2, which we refer to as HEB3, on c‐plane sapphire ...
Nathaniel S. McIlwaine +7 more
wiley +1 more source
Laminar boundary-layer separation and near-wake flow for a smooth blunt body at supersonic and hypersonic speeds. [PDF]
, 1967 Jean-Marie Grange +2 more
openalex +2 more sources
Optimum maneuvers of hypervelocity vehicles [PDF]
Optimum maneuvering of glide vehicle at hypersonic ...
Busemann, A., Kelley, G. F., Vinh, N. X.
core +1 more source
Investigation of the double ramp in hypersonic flow using luminescent measurement systems [PDF]
, 2012 Compression ramp flows in supersonic and hypersonic environments present unique flow patterns for shock wave-boundary layer interaction studies. They also represent the generic geometry of two-dimensional inlets and deflected control surfaces for re ...
Anderson +42 more
core +1 more source