Search results

Thus, the nanocrystals morphology is the main factor affecting the stability of the phase state of nanocrystalline ZrO2.
Therefore, the aim of this work was to study the equilibrium morphology shape of ZrO2 nanocrystals for a specified size, and their energy properties.
The energy properties of nanocrystals.
Music, Factors Influencing the Stability of Low Temperature Tetragonal ZrO2, Croat.
Scheffler, Density-functional theory calculations for poly-atomic systems: electronic structure, static and elastic properties and ab initio molecular dynamics, Comp.

It is, in particular, the stiffness, the number and the arrangement of rubber bearings that is the essential factor affecting the dynamic characteristics of the articulated column system.
The designed solution allowing controlling the dynamic properties of the column system with articulated joints and elastically embedded diaphragms creates preconditions for controlled dynamic properties of the system offering the possibility of the system’s use under extreme conditions and situations (e.g. technical and induced seismicity, natural seismicity, etc.).
The stiffness or dynamic properties may be modified by modifying the stiffness of the connecting bearings of the diaphragm and cross bars.
Mechanical properties of rubber.
Acknowledgments The paper was written with support from TA02010837 “Multipurpose dismantleable prefabricated reinforced concrete building system with controlled joint properties and the possibility of repeated use”.

Introduction As the “green” structure material for the 21st century, magnesium alloys possess the superiority in terms of reducing energy consumption, increasing the energy efficiency, lessening the pollution with the advantage of light, specific mechanical properties, good damping etc.
But magnesium alloys with low melting point, high linear expansion coefficient and high thermal conductivity, resulting magnesium alloys in welding process susceptible to oxidation, hot crack and wide HAZ, it is difficult to match the welding joints and parent material properties[1,3].
Due to the chemical properties of magnesium alloy is more lively, welding must be completed within 3 hours after clean-up.
Affected by welding stress, low melting point eutectic is easy to crack , forming hot cracks.
In order to reduce welding stress, thereby reducing the generation of welding hot cracks, metallurgy and technology factors should be considered.

Introduction As crack resistance, shear strength, torsional strength, shrinkage stress and bond properties of concrete members are relevant to tensile strength, tensile strength becomes a basic strength index of concrete and the basis of its mechanical properties which also has vital theoretical significance both for establishing strength criterion of concrete under multi-axial stress states and for analyzing its brittleness.
Eccentricity and stress concentration are the main affect factors for uniform uniaxial tensile strength test of concrete [1].
According to ‘Standard for method of mixture properties on ordinary concrete’ (GB/T 50080-2002) [3] and ‘Standard for method of mechanical properties on ordinary concrete’ (GB/T 50080-2002) [4] , concrete slump was tested.
[2] Neville, A.M. (1973) “Properties of Concrete”, 2nd ed.Pitman Publishing Ltd
“Standard for method of mechanical properties on ordinary concrete”, GB/T 50081-2002\, Beijing: Chinese Architecture Industry Press, April 2003

Introduction One of the factors to increase efficiency of a blast furnace is by a cost reduction of cast-iron production by an extension of equipment service life.
In general, titanium-containing components having high melting properties are present in such additives.
These two factors create contradictory requirements to the interpolation algorithm.
To solve this problem, a notion of effective heat conductivity factor reflecting the indicated factors is entered into the mathematical model.
Vitkina: The Estimation of the Thermal Properties of Refractory Materials According to the Temperatures Acceleration Curve at the Blast Furnace Blowing-in.

Kurniawan1,c 1Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Skudai, Malaysia 2Dept.of Mechanical Engineering, Universitas Jenderal Ahmad Yani, Cimahi-Bandung, Indonesia atrians65@yahoo.co.id, bizman@fkm.utm.my, cdenni@utm.my Keywords: Metal spinning; cold work; tube head Abstract.
The combination of parameters followed the preset design of experiment of the three factors (i.e., temperature, feed rate, and spinning speed) with two levels (i.e., low and high) for each factor.
Combination of factor and level in the spinning process Sample No.
Hardness and microstructure of the spinned tube head were similar to those of initial steel sheet, indicating inner parts of the wall were not affected by the cold spinning process.
Kang, Effect of spinning deformation on microstructure evolution and mechanical property of TA15 titanium alloy, Trans.

The production states can affect the company's economic benefit.
Safety factor is calculated by iterating, is the solution when .
Table 1 Parameters of faults and physical properties of rocks C (Kpa) Φ(°) (KN/m³) E(Mpa) μ rubble 26 26 16.5 1038 0.15 sandstone 109.44 29.75 26.2 1520 0.14 killas 147.06 28.05 27.8 1192 0.21 shattered fault zones 20 23.8 22 88 0.26 quartzite 148.2 29.3 27 1798 0.24 The sliding surface search of critical state for present slope.
Including quaternary diluvial layer adopting the mechanical parameters of sandstone, carbonaceous mudstone and extrusion belt adopting mechanical parameters of fault fracture zone, mixed zone cladding on the slate using the mechanical parameters of gravel.
Its main advantages are that it can eliminate the influence of artificial factors, ensure the actual reliability of the evaluation, and avoid the same project with different evaluation conclusion by different technical personnel.

Orthogonal design experiments Factors and levels.
The epoxy resin has excellent adhesive and mechanical properties.
Table 1 illustrates the factors and levels of the orthogonal design experiments.
Table 1 The factors and levels in the orthogonal experiments Evaluation methods.
Fig. 1 also illustrates that the order of the five factors' effect importance on the tensile shear strength is A>E>B>C>D.

The Design of Screw Extrusion Mechanism based on Melted Extrusion Modeling Xiaomin Cheng1, a, Guoliang Zhang 2,b, Gen Zhou 2,c and Zi Cui1,a 1 School of Mechanical Engineering, Ningbo University of Technology, Ningbo, 315016, China 2 072 class of School of Mechanical Engineering, Ningbo University of Technology Ningbo, 315016, China achxm369@hotmail.com, b 849074018@qq.com, c 907833060@qq.com Keywords: Melted extrusion modeling, Screw extrusion, Mechanism designing.
The quality of rapid prototyping part was directly affected by the performance of ever parts of screw extrusion mechanism [1].
(5) According the information, considering the factors of wax: density change, compressibility, reflow and so on.
Ascertaining the three zones, extrusion process condition and forming material properties are closely relate to each other.
Ever faction that impact groove depth H3 will affect the length in metering zone in return.

By varying the duration and rate of milling the properties of ferrites can be changed. 2.
Results and discussion 3.1 Effects of SHI induced defects on electrical and magnetic properties Researchers have reported several works where the ion beams significantly and remarkably tuned the properties of materials.
Hysteresis loops are sensitive to the presence of defects in the lattice and hence heavy ion irradiation can adversely affect this property.
In this context, it should be mentioned that impurity doping and mechanical milling in powdered ferrite samples have also shown efficient progress in changing the properties of ferrites.
Sberveglieri, "Fundamental properties of nanostructured materials", World Scientific 1993 3.