Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: February 2013
Authors: Yue Qiu Gong, Xu Jun Li, Ren Jie Huang, Xue Jun Zheng
The improved electric properties may make NKBT20/STO thin film a promising candidate in micro-electro-mechanical system.
The improved perovskite phase may contribute to the enhancement of electrical properties.
A dense surface seems to be important for ferroelectric thin film, because even a surface crack will affect the microstructure, residual stress and ferroelectric properties of thin films [11].
Therefore, we have not study its electric properties anymore.
The NKBT20/STO thin film is of the smallest leakage current density and there are two important factors contributing to this result.
Online since: September 2017
Authors: Corneliu Cismaşiu, Válter J.G. Lúcio, Manuel T.M.S. Gonçalves, Gabriel J. Gomes, José P.F. Basto, Hugo Bento Rebelo
First, the non-linear constitutive models must be calibrated to match the properties of the materials used in the experimental tests.
They are related to (a) size of the contact surface between the panel and concrete beams, (b) elasticity and damping of the boundary conditions due to the presence of the soil and (c) strain rate effects affecting the material properties for dynamic loading.
However, the curve (i) in Figure 7 suggests that, part of the blast energy was dissipated by the damping properties of the soil.
Dynamic increase factors for concrete.
Dynamic increase factors for steel reinforcing bars.
Online since: October 2010
Authors: Na Zou, Jian Song Tan, Jian Ping Wang, Ming Pang, Bo Wu
The roles of many material parameters which affect the size effects, such as grain sizes, Young’s modulus, twin/matrix lamellar structures aspect ratio and volume fraction, as well as the plastic strain hardening exponent, are presented.
For the potential applications of this electrodeposited pure Cu with excellent mechanical properties, there have been many researches on the deformation mechanism of the electro-deposited Cu with twin/matrix lamellar microstructure recently [2, 3, 4].
The results of previous researches have shown that twin/matrix lamellar microstructure presented in the Cu grain directly effects materials mechanic properties and especially the spacing of two twin boundaries plane (i.e. the twin lamellar spacing) plays an important roles in the yielding and hardening of materials.
where is the Nye-factor to reflect the effect of crystallography on the distribution of GNDs and is around 1.90 for face-centered-cubic (fcc) polycrystals.
Considering the properties of material microstructures, a simplified axisymmetric cell computational model is proposed as shown in Fig.2.
Online since: September 2019
Authors: Aleksey A. Lukyanov, Boris S. Ermakov, Ranita Lee, S.A. Vologzhanina, Sergej M. Bobrovskij
Austenitic steels of the chromomanganese alloying system have a higher level of the complex of mechanical and casting properties.
The mechanical and casting properties of this steel in comparison with the same characteristics of steel 12X18N10TL are given in Table 1.
Fridman, Mechanical properties of metals [Mekhanicheskie svojstva metallov] third ed., part 2.
Prediction of the properties of heat-affected zone of welded joints of sheets from aluminum alloys with structured surface.
Effect of nitrogen alloying on short-term and long-term mechanical properties of steel 07Kh12NMFB.
Online since: July 2016
Authors: Andrey V. Korchak, Boris A. Kartozia
Whether an underground facility is to be built in a certain location is determined by many factors.
Second, the planning, siting, design and construction of an underground facility crucially depend on the geologic, geotechnical, and geomechanical properties of subsurface rocks and sediments.
On the other hand, when affected by external factors, it may retain its stability and even become more resilient than before – thanks to the self-organization mechanisms which are typical of natural dynamic systems.
Systems approach involves the study of the properties of natural-artificial geosystems and subsequent formulation of principles for the creation of such systems.
In this formulation, the basic properties of natural-artificial system are as follows: complexity, non-additivity, dynamism, stochasticity, inertia, hierarchical pattern and uniqueness.
Online since: December 2012
Authors: Yan Bin Shi, Li Li Zhang, Zhen Ling Fu
Some physical properties of per-phase obtained through simulating the typical flow behaviors in iron-making process were contrastive analyzed with the field data.
Thus, facing such complex multiphase process, the stable and optimal operations for the gas–solid–powder flow in raceway become the key factor to achieve high efficiency for iron-making [1-3].
In the hearth, the solid particles are driven down with funnelform flow to the raceway, and affected obviously by the gas flow.
The liquid droplets are formed from the cohesive zone, and the flow way of which is affected by the solid particles.
Simulation Application As well known, the valid injection formation is the main factor to ensure an efficient production with lower consumption.
Online since: October 2014
Authors: Yang Zhang, Qiang Yu, Yan Jiang, Hong Wen Zhang, Shi Long Zhou
The mechanical properties of composite materials are modified by traditional coupling agent often can not meet the requirements [5-6].
After mixing and crushing, the samples which were used for mechanical properties test were prepared by huck trace injection molding machine.
After mixing and crushing, the samples used for mechanical properties test were prepared by huck trace injection molding machine.
Two factors important to that are as follows.
And flexible polyacrylate segments are beneficial to stress dispersion, so as to improve the mechanical properties of composite materials.
Online since: June 2014
Authors: Mu Zhang, Di Huo, Qi Zhu, Ming Xie, Zhi Jie Lin, Xu Dong Sun, Shao Hong Liu, Jia Lin Chen, Ji Guang Li, Xiao Dong Li
The microstructure and properties were analyzed for the prepared Ag-SnO2 electrical contact materials.
Previous research [7, 10] has revealed that homogeneous distribution of SnO2 in Ag matrix is beneficial to good electrical and mechanical properties.
The influence of SnO2 particle size on microstructure and properties of the electrical contact materials was systematically investigated.
However, high hardness is detrimental to mechanical processing.
Li, Microstructures and properties of silver-based contact material fabricated by hot extrusion of internal oxidized Ag-Sn-Sb alloy powders, Mat.
Online since: January 2015
Authors: Li Sheng Liu, Qi Wen Liu, Jun Li
Therefore, various factors need to be comprehensive taken into account in the selection of wall slip coefficients.
Thus, these factors generally make the design process difficult to achieve the desired expectations.
Given the rheological essence of rubber melts, we should use visco-elastic models to describe the mechanical properties of tread rubber.
The extrusion swell ratio is mainly determined by production technical, the pattern mold structure and physical properties.
Fig.6 Velocity field along with the Z direction at different wall slip coefficients The shear rate field .The shear rate is an important factor affecting the co-extrusion process.
Online since: September 2017
Authors: Ľuboslav Straka, Slavomíra Hašová
(5) As mentioned above, the total quantity of material removal during the EDM is dependent on several factors.
Table 3 lists the basic physical properties of workpiece material EN X32CrMoV12-28 (W.
Unsuitable physical and chemical properties of materials, used for manufacturing tool electrodes, may adversely affect the value of EWR.
Pandová, Progressive technology diagnostic and factors affecting to machinability, Applied Mechanics and Materials 616 (2014) 183-190
Piteľ, Properties evaluation of thin microhardened surface layer of tool steel after wire EDM, Metals 6/5 (2016) 1-16
Showing 13541 to 13550 of 25943 items