Results 131 to 140 of about 58,785 (356)

INVESTIGATION OF METHODS FOR MEASUREMENT OF PHASE-FREQUENCY DISTORTIONS (PFD) IN LINEAR LINES

open access: yes, 1992
The investigation object is the phase of frequency distortions in VF channels. The aim is to develop and investigate the discrete measurement methods of phase distortions by the mathematical modelling of objects and also to develop and investigate the ...
Omla, Yaser
core  

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

open access: yesAdvanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao   +3 more
wiley   +1 more source

A new welding distortion analysis method considering inherent deformation-based tendon force estimation

open access: yesInternational Journal of Naval Architecture and Ocean Engineering
This paper presents a new analysis method for predicting welding distortions induced by welding heat during the assembly process in various engineering fields.
Hyun-Duk Seo, Jae Min Lee
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Oil price distortions and their short- and long-run impacts on the Nigerian economy

open access: yes
Given its economic structure, high energy intensity and simultaneity as an oil importing and exporting economy, Nigeria stands out as a special case to study the oil-price-macroeconomy relation. This paper studies the linear and asymmetric impacts of oil
Effiong, Ekpeno   +2 more
core  

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

Implementation of DSP-based algorithms on USRP for mitigating non-linear distortions in the receiver [PDF]

open access: yes, 2013
In recent years, software-defined radio (SDR) has attracted increasingly more attention in regards to modern communication systems. The concept of SDR defines a radio device that is capable of flexibly reconfiguring its radio interface by software ...
Schlembach, Florian
core  

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