Results 61 to 70 of about 270,077 (320)
On the Radial Structure of Radiatively Inefficient Accretion Flows with Convection [PDF]
, 2001 We consider the radial structure of radiatively inefficient hydrodynamic accretion flows around black holes. We show that low-viscosity flows consist of two zones: an outer convection-dominated zone and an inner advection-dominated zone. The transition between these two zones occurs at ~50 Schwarzschild radii.
arxiv +1 more source
From Damage to Functionality: Remanufacturing of Thrust Roller Bearings by Tailored Forming
Advanced Engineering Materials, EarlyView.Herein, the wear and fatigue behavior of repaired bearing raceways with a new powder alloy is investigated using a FE8 test‐rig and an oscillating tribometer. The tests are compared with industrial manufactured bearings to evaluate the repair quality. The repair can extend the service life of the repaired bearing to that of a new bearing and improves ...
Felix Saure +3 more
wiley +1 more source
Nuclear Engineering and Technology, 2021 By using miniature SENB specimens, the fracture properties of the materials in the region of welded metal, 321 stainless steel heat affected zone, 690 alloy heat affected zone of 321/690 dissimilar metal girth welded joints were tested.
Bao Chen +5 more
doaj
Precipitate Phases of Electron Beam Welded Joint in Superalloy Dissimilar Materials
Journal of Aeronautical Materials, 2018 The precipitate phases of electron beam welded joint in GH141/GH907 superalloy dissimilar materials were studied by scanning electron microscopy (SEM), transmission electron microscope (TEM) and energy dispersive spectrometer (EDS).
LIU Jin, ZHAO Zhiyi
doaj +1 more source
Turbulent stress within dead zones and magnetic field dragging induced by Rossby vortices [PDF]
arXiv, 2023 By means of three dimensional resistive-magnetohydrodynamical models, we study the evolution of the so-called dead zones focused on the magnitude of the Reynolds and Maxwell stresses. We consider two different types of static resistivity radial profiles which give rise to an intermediate dead zone or an intermediate active zone. As we are interested in
arxiv
Advanced Engineering Materials, EarlyView.This article examines the effect of postprocessing heat treatment on 316L stainless steel (SS316L) produced via laser powder bed fusion (LPBF). Heat treatment slightly affects property anisotropy, reduces strength, and enhances elongation. However, it increases corrosion susceptibility due to nanoscale precipitations, though overall corrosion ...
Baibhav Karan +5 more
wiley +1 more source
Литьë и металлургияThis study examines the artifacts introduced during metallographic sample preparation when using an angle grinder and plasma cutting for sectioning samples.
A. G. Anisovich
doaj +1 more source
Analytical Derivation of Three Dimensional Vorticity Function for wave breaking in Surf Zone [PDF]
arXiv, 2015 In this report, Mathematical model for generalized nonlinear three dimensional wave breaking equations was de- veloped analytically using fully nonlinear extended Boussinesq equations to encompass rotational dynamics in wave breaking zone. The three dimensional equations for vorticity distributions are developed from Reynold based stress equations ...
arxiv
Advanced Engineering Materials, EarlyView.A hybrid system for de‐icing made of gradient polymer coatings, deposited on aluminum coupled with an electromechanical system, is demonstrated as an effective and durable strategy for reducing drastically ice adhesion. The system is capable of detaching ice blocks over the coating in less than 1 s, regardless of the ice type and covered area ...
Gabriel Hernández Rodríguez +8 more
wiley +1 more source
Heat accumulation effect during CO2 laser processing of fused silica optics
Results in Physics, 2022 The intrinsic heat-affected zone (HAZ) during the microsecond pulsed laser processing significantly affect the surface quality of the fused silica optics.
Chao Tan +6 more
doaj