Results 131 to 140 of about 3,274,537 (356)
Painleve-Gullstrand Coordinates for the Kerr Solution
, 2014 We construct a coordinate system for the Kerr solution, based on the zero angular momentum observers dropped from infinity, which generalizes the Painleve-Gullstrand coordinate system for the Schwarzschild solution.
A. Garat +11 more
core +1 more source
Advanced Engineering Materials, EarlyView.This study explores aerosol jet‐printed (AJP) surface roughness, its effects on the performance of microwave electronics, and its process contributors. First, an electromagnetic model is vetted for AJP's unique roughness signature. Simulations are built which show process‐induced roughness is as significant as conductor resistivity in driving microwave
Christopher Areias, Alkim Akyurtlu
wiley +1 more source
About the possibility of determining the speed of jets of radio galaxies and quasars from studies of the fine structure of their nodes at high angular resolution [PDF]
, 2002 E. Yu. Bannikova +1 more
openalex +1 more source
Innovative Approach for the Determination of a DC Motor’s and Drive’s Parameters Using Evolutionary Methods and Different Measured Current and Angular Speed Responses [PDF]
, 2023 Marko Jesenik +2 more
openalex +1 more source
A comparison of one and two dimensional models of transonic accretion discs around collapsed objects
, 1994 We construct models of the inner part of a transonic adiabatic accretion disc assuming constant specific angular momentum taking the vertical structure fully into account.\\ For comparison purposes, we construct the corresponding one dimensional viscous ...
Papaloizou, J. C. B., Szuszkiewicz, E.
core +1 more source
Direct Consolidation of Copper–Graphene Composite by Rotary Swaging
Advanced Engineering Materials, EarlyView.The applicability of the rotary swaging method for preparation of electroconductive copper–graphene composite by direct consolidation of powders is proven. The consolidated material features advantageous microstructure featuring fine grains and twins, with homogeneous distribution of graphene, primarily along the twin boundaries, which contribute to ...
Radim Kocich +2 more
wiley +1 more source
Shock and Vibration, 2018 To explore how the cutting parameters affect the conical pick’s cutting force in coal cutting process, some simulation tests were carried with EDEM based on analysis of coal cutting process of conical pick and micro mechanical characteristic of coal ...
Jinxia Liu +3 more
doaj +1 more source
Open loop stabilization of the rotor angular speed in the induction machine [PDF]
, 2003 Mikael Stocks, Alexander Medvedev
openalex +1 more source
Advanced Engineering Materials, EarlyView.This study presents rapid evaluation methods for scan strategies in powder bed fusion (PBF) of polymers with a NIR laser as an example for its application. It uses line buffer‐based calculations and point density fields to predict the performance of four different scan strategies. The methods show promising results in laser‐based PBF of polymer samples,
Simon Leupold +9 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.What happens when 32 labs join forces to study nanoparticle‐modified powders? A data‐driven journey through laser powder bed fusion—now openly accessible for the entire additive manufacturing community—is studied. Laser powder bed fusion is a cornerstone technology for additive manufacturing (AM) of metals and polymers, yet challenges in achieving ...
Ihsan Murat Kuşoğlu +73 more
wiley +1 more source