搜索结果: 1-15 共查到“材料科学 time”相关记录17条 . 查询时间(0.218 秒)
With new experimental method, researchers probe spin structure in 2D materials for first time（图）
2D材料 自旋结构 “魔角”石墨烯
2023/6/26
By observing spin structure in “magic-angle” graphene, a team of scientists led by Brown University researchers have found a workaround for a long-standing roadblock in the field of two-dimensional el...
Physicists find direct evidence of strong electron correlation in a 2D material for the first time（图）
二维材料 强电子 相关性 非常规超导性
2023/6/7
In recent years, physicists have discovered materials that are able to switch their electrical character from a metal to an insulator, and even to a superconductor, which is a material in a friction-f...
Symposium TC4: Advances in Spatial, Energy and Time Resolution in Electron Microscopy
Materials dynamics nanoparticles
2016/7/21
The last few years have seen dramatic advances in electron microscope resolution, spatial resolution through aberration correction, energy resolution through monochromation, and time resolution throug...
Resistance to time-dependent deformation of polystyrene/carbon nanotube composites under cyclic tension
Polymer–matrix composites Creep Electron microscopy Extrusion
2015/3/30
Materials subject to cyclic stress can succumb to fatigue, causing failure at stress levels much lower than those in static loading cases. Herein we discussed the viscoelastic behaviors of polystyrene...
Realistic time-scale fully atomistic simulations of surface nucleation of dislocations in pristine nanopillars
Dislocations Molecular Dynamics Atomistic simulation Nucleation Activation Energy Accelerated Dynamics Nanomechanics
2012/2/24
We use our recently proposed accelerated dynamics algorithm (Tiwary and van de Walle, 2011) to calculate temperature and stress dependence of activation free energy for surface nucleation of dislocati...
A minimal model for excitons within time-dependent density-functional theory
minimal model excitons time-dependent density-functional theory
2012/2/24
The accurate description of the optical spectra of insulators and semiconductors remains an important challenge for time-dependent density-functional theory (TDDFT). Evidence has been given in the lit...
Development of a real-time tunable stiffness and damping vibration isolator based on magnetorheological elastomer
ON–OFF control MRE voice coil motor isolator variable stiffness and damping
2015/3/30
A tunable stiffness and damping vibration isolator based on magnetorheological elastomers (MREs) is developed. In this isolator, four MRE elements are used as the tunable springs, whose stiffness can ...
Investigation of the life-time of drills covered with the anti-wear Cr(C,N) complex coatings, deposited by means of Arc-PVD technique
Cr(N,C) coatings Arc-PVD Drilling test
2009/12/14
Purpose: This research was done to study the tribological behavior of twist HS6-5-2 drills covered with Cr/CrN/CrN+Cr2N/Cr(C, N) and Cr/CrN/ Cr(C, N) coatings as well as to obtain detailed information...
The influence of simultaneous impact of temperature and time on the properties and structure of X10CrWMoVNb9-2 steel
Mechanical properties Structure Degradation after exposure test
2009/12/14
Purpose: of this paper is to present the changes of the mechanical properties and structure in material components of the power station boiler after long-lasting annealing made of X10CrWMoVNb9-2 steel...
Blended learning in teaching materials science subjects at full time studies
Computer supported education Moodle Blended learning
2009/12/2
Purpose: The main aim of this article is to present the advantages and disadvantages of the use of blended
learning in teaching Fundamentals of Materials Science and Metal Materials. The purpose of c...
Development of Multi-Point Micro-Punch: The Effects of Gold Plating on Discharge Time and Punch Surface
Multi-Point Punch Gold Plating Micro-Die Set
2010/1/15
The continued demand for micro-hole and slots is one of the driving forces behind this research. Coupled with this are
successes gained in developing a single-point micro-punching unit. In this paper...
Determination of Weibull Analysis of the Hypereutectic Silumins Reliability in Failure Time Respect
Computer-aided casting production Weibull analysis Reliability Analysis of fault occurrence time
2011/3/31
The results of dynamic evaluation of the reliability of hypereutectic AlSi17Cu3NiMg silumin under the effect of symmetrical cyclic tensile-compressive stresses were presented. Studies were carried out...
Determination of Weibull Analysis of the Hypereutectic Silumins Reliability in Failure Time Respect
Computer-aided casting production Weibull analysis Reliability Analysis of fault occurrence time
2011/3/31
The results of dynamic evaluation of the reliability of hypereutectic AlSi17Cu3NiMg silumin under the effect of symmetrical cyclic tensile-compressive stresses were presented. Studies were carried out...
Application of time-series analysis in foundry production
Process modeling Time-series Forecasting Foundry technology Molding sand
2011/3/31
Characterization of the time-series analysis is presented, as a data mining tool which facilitates better understanding nature of manufacturing process and permits forecasting of future valu...
Application of time-series analysis in foundry production
Process modeling Time-series Forecasting Foundry technology Molding sand
2011/3/31
Characterization of the time-series analysis is presented, as a data mining tool which facilitates better understanding nature of manufacturing process and permits forecasting of future valu...