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It is important to evaluate the mechanical properties of copper foil to assess their reliability.
It is well known that the mechanical properties of metallic foil and film are different from those of bulk materials because of their unique microstructure.
However, the influence of microstructure of metallic foil on its mechanical properties is not clear because a lot of factors, such as foil thickness, grain size, specimen size, and loading condition, affect it.
After machining, heat treatment was conducted to adjust the grain diameter to 20 mm for each specimen to evaluate the influence of specimen thickness on their mechanical properties.
The mechanical properties of both specimens in a vacuum (SEM) agreed with those in air.

In the models, mortar and blocks are given different material properties and simulated by contact elements and plane elements respectively.
In order to solve the problems, the zero-thickness contact elements provided by software ANSYS were used to simulate the mechanical properties of gray mortar joints[7,8].
Top beams were simulated by plane42 and their material properties were defined as concrete.
Gray mortar joints are the most important parts to the mechanical properties of masonry structures, so choosing a suitable unit for mortar layer is very critical.
While the finite element analysis didn’t take into account these factors, which made the deformation of finite element calculation smaller.

Effects of minor silver addition on microstructure, mechanical properties and corrosion resistances of Al-8Zn-1.Cu-1.3Mg-0.1Zr alloys were investigated using optical microscope (OM), scanning electron microscopy (SEM), mechanical properties and corrosion testing.
It was well known that the mechanical properties of 7000 series Al alloys can be improved by properly controlling the size and volume fraction of η' phases.
On the other hand, the both positive and negative effects of silver addition on mechanical properties of 7000 Al alloys were also reported by Kusui [8].
However, the mechanical properties of the based alloy become terrible when the silver content approach to 0.2 wt.%.
A3) The four main influencing factor of tensile properties is the degree of recrystallization, the effect of solid solution phase, the grain size of the recrystallization region and the volume fraction of strengthening phase which exist in matrix.

Various functional properties such as hydrophobicity and surface roughness are examined.
Aluminum alloy 7075 has excellent mechanical properties and corrosion resistance, and it can be used at high range of temperature.
The wetting properties were measured by Contact angle analysis.
It was found that the significant process parameters affecting the roughness values were Laser pulse energy and the repetation rate.
[5] The adhesion and strength properties of ice, Proc.

Meanwhile the key factors affecting the dynamical characteristics of the system were discussed in detail.
The anti-shearing stiffness, anti-bending stiffness and tensile stiffness of bogie were key factors of affecting the security, smoothness and stability of railway vehicle[2].
Mechanical system was the frame of the bogie test-bench, which was consisted of gantry, cross slide-bed, the agency of fixing wheel and guiding rail.
Each affects differently the time from vibration to steadiness of the system.
Through objectively and comprehensively analyzing factors which affect the system stability and efficiency, we simulate the mathematical model in Matlab7.0.

The state of stress that exists in welds during and following the thermal cycle and how this affects microstructure and properties of the joining can be predicted by modeling and observations during laboratory experiments and by analyzing results of case studies.
The character of important physical-chemical processes in a welding pool and near to its border influences technological and service properties of a welding joint.
The jet of plasma affecting a surface of a pool, and circulates it.
The account of these factors requires the heat conduction and heat and mass transfer, the pool hydrodynamics, and other variables to be included into the equations system.
Dependence of physical properties of a material on temperature and the requirements of welding defines influence of different forces on liquid metal convection.

Analyzed the main factors of affecting hydraulic support stability, this paper analyses anti-topple and antiskid technology to apply to inclined angle 15~33°and compatible supports ZF4200/16/26.
Every roof situation in the direction of large inclined angle suffering different stress lead to different caving property, and the roof motivation can affect other supports strained condition and stability.
If the roof loses its initial property and the roof move downward, the support might topple.
Considering safety factor, we think that the support can topple if toppling angle is greater than 20°.
(3) Transport is another factor affecting support gliding.

The effect of heat treatment of gray and nodular cast iron with ferrite matrix on mechanical properties and corrosion rate compared with medium carbon steel Mohamed A.
Introduction One reason for the versatility of metallic materials lies in the wide range of mechanical properties they possess, which are accessible to management by various means.
Steel with low carbon content has the same properties as iron, soft but easily formed.
· Medium carbon steel exposed to corrosion under many factors specially due to multiphase at room temperature more than after heat treatment and quenching even with stressed martensite structure which produced after quenching
· Improvement of mechanical properties of both gray and nodular cast iron with ferrite matrix couldn’t be achieved with heating at austenite area for one hour then quenching but have to give more time to allow some decomposition of graphite

The influence of the current density, pulse frequency, duty cycle, and other factors on surface roughness were examined, and the optimal parameters was determined.
Introduction Stainless steel has been widely used in temperature, hot-spot indication, nuclear and chemical industries, transportation, construction and medicine in recent years due to its excellent corrosion resistance and mechanical property[1].
Many factors need to be controlled properly because they influence the polishing quality of electrochemical polishing.
Because of removing polarization and heat by power gap, this discontinuous process will help the physical, chemical properties to improve the quality of polishing.
Polishing experiment of stainless steel SUS201, SUS202 and SUS430 shows that the current density, pulse frequency and duty cycle are the important factors affecting polishing quality.

The Midwest cities large engineering construction have mushroomed, these engineering investment big, affecting wide, in its construction or after completion of the construction process, form many large scale ,project more,factors complex,geological environment variable, saftey and use requirement different loess slope engineering.
Geotechnical engineering experts and geological experts, with a specific project construction, and the choice of the loess section representative of the physical and mechanical properties of from macroscopical to microcosmic launched into the system the research [1] [2] [3].
B Exterior factors 1） Climatic factor Rainfall and melted snow is the major source for groundwater in the loess area.
B Mechanical analysis of The loess slope instability Under the action of loess slope gravity stress, with the pressure action of the overlying soil the microstructure change of loess will cause the major change of loess’ physical and mechanical properties, so changes the soil structure.
The safety factors caculated by various of limit equilibrium method show in table 1,the maximum is 0.843 for the safety factors.