Results 21 to 30 of about 20,392 (302)

Quantum capacity of an amplitude-damping channel with memory [PDF]

open access: yesQuantum Information Processing, 2014
We calculate the quantum capacity of an amplitude-damping channel with time correlated Markov noise, for two channel uses. Our results show that memory of the channel increases it's ability to transmit quantum information significantly. We analyze and compare our findings with earlier numerical results on amplitude-damping channel with memory. An upper
Rabia Jahangir, Nigum Arshed, A. H. Toor
openaire   +3 more sources

The Influence of Precipitation Hardening on the Damping Capacity in Al–Si–Mg Cast Components at Different Strain Amplitudes

open access: yesMetals, 2022
An A356 alloy is a classic casting light alloy, which is able to be processed into complex geometrical shapes with tailored static and dynamic mechanical properties. As a promising material to reduce fuel and energy consumption in future vehicle designs,
Vitor H. Carneiro   +4 more
doaj   +1 more source

Effects of Y content on microstructure, mechanical and damping properties of Mg–Al–Y alloys

open access: yesMaterials Research Express, 2021
The effect of Y on microstructure, mechanical properties, and damping properties of the extruded and annealed Mg–1Al– x Y ( x  = 4, 6, 8) alloys has been studied. The grain sizes of Mg–Al–Y alloys decreased with the increase of Y.
Hongbin Ma, Jinhui Wang
doaj   +1 more source

Enhancement of Damping Capbility of MnCu Alloy by High Magnetic Field

open access: yesMetals, 2022
The directionally solidified MnCuNiFe alloy was prepared under high magnetic field. The microstructure, composition distribution, phase transformation behavior and damping capacity of the alloy were studied by means of metallographic microscope, scanning
Diwei Wang   +5 more
doaj   +1 more source

Evaluation of various fluid-film models for use in the analysis of squeeze film dampers with a central groove [PDF]

open access: yes, 2002
Experimental vibration responses of squeeze film dampers (SFDs) are obtained with four different central groove depths, two types of lubricant and various unbalance levels.
Hill, M.   +5 more
core   +1 more source

Applications Of Mechanical Spectroscopy To Industrial Materials

open access: yesArchives of Metallurgy and Materials, 2015
The paper is a review of original results, which were obtained by mechanical spectroscopy in the development of industrial materials, such as grey cast iron (damping capacity), aluminum alloys (recrystallization), nickel alloys (grain boundary ...
Schaller R.
doaj   +1 more source

Optimisation of Heat Treatment Process for Damping Properties of Mg-13Gd-4Y-2Zn-0.5Zr Magnesium Alloy Using Box–Behnken Design Method

open access: yesMetals, 2019
High damping magnesium alloys have poor mechanical properties, so it is necessary to investigate the damping properties of high-strength wrought magnesium alloys to effectively reduce vibration and noise in mechanical engineering. The aim of this work is
Jun Zhang   +6 more
doaj   +1 more source

Effects of Cold Rolling Deformation on Microstructure and Damping Capacity of a Fe-Mn-Cr-Co-Si Alloy [PDF]

open access: yesMaterials Research, 2019
The microstructure evolution of Fe-19Mn-8Cr-1Co-0.2Si (wt.%) alloy and Fe-19Mn (wt.%) alloy during cold rolling and its effect on the damping capacity of the two alloys were investigated.
Lei Meng, Xiaoming Zhang
doaj   +1 more source

Cold-Rolling Effect on Low-Frequency Damping Properties of AZ31 Magnesium Alloy Plate at Moderately High Temperature [PDF]

open access: yesArchives of Metallurgy and Materials
This study investigated the influence of cold-rolling on the damping capacity of the hot-extruded AZ31 alloy plate. The damping capacity of the hot-extruded and the cold-rolled AZ31 alloy plates were measured by a dynamic mechanical analysis with a ...
Shih-Hang Chang
doaj   +1 more source

Sliding Thrust Bearings with Self-Generated Fluid Pivots

open access: yesJournal of Mechanical Engineering, 2022
The article discusses the disadvantages of thrust sliding bearings with mechanical supports and mechanical balancing systems similar to the Kingsbury system. Requirements for the design of thrust bearings corresponding to the current level of development
Vasyl S. Martsynkovskii   +3 more
doaj   +1 more source

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