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It is mainly composed of martensite, residual austenite large grains and some fine carbides. 3.The metamorphic layer influencing factors (1) on the punch and die material microstructure and elemental composition study found that spark discharge effect, cause the material of the surface layer microstructure has undergone significant changes, the formation of discontinuous, metamorphic layer of uneven thickness.
As EDM process is random in the same processing conditions, the thickness of the affected layer tends to be uneven.
Wire cutting starting point is also important and should be selected relatively flat, easy to finish, or material properties of the punch and die set is not the site of the starting point for the line cutting.
Increase the mechanical design of the reform measures [J].
Mechanical Design [M].

Silk hydrogels have been thoroughly studied for potential biotechnological applications due to their exceptional mechanical properties, biocompatibility, controllable degradation rates, and self-assembly into β-sheet-rich networks [6].
Therefore, it is necessary to explore the formation mechanism of SF gel and its influencing factors.
The formation of SF gel mainly includes hydrophobic interactions, hydrogen bond formation and electrostatic interactions [7] and there are many influencing factors such as temperature, SF concentration, pH and ions, which significantly affect the gelation process.
Yucel et al [11] resented a simple vortexing technique to employ the shear gradient –induced changes in SF structure and solution viscoelastic properties to control the postvortex selfassembly and hydrogelation kinetics.
It is likely that several physical factors related to sonication, including local temperature increases, mechanical/shear forces, and increased air-liquid interfaces affect the process of rapid gelation of SF.

Its purpose and function is primarily to control the internal physical environmental factors, such as, heat, light and sound.
In tropical environment, solar radiation is one of the factors responsible for the thermal load of buildings.
The heat flow between outdoor and indoor will depend on the building envelope and the thermal and physical properties of building elements.
Vegetation affects air quality through pollutant dispersion and deposition [26].
Urban form and Socio-Demographic Factors, Influence Yard Vegetation, Visitation and Ecosystem Service Benefits.

Assuming that the wave attenuation coefficients in Si and LiNbO3 at the lowest resonant mode of the thickness oscillations keep the same values as at frequency 1 GHz, then the values of Q-factors of Si () and LiNbO3 () will be: Q1 = 46-36, Q0 = 1100.
But the resulting value of Q-factor of the multilayer structure will be lower than the mechanical value of Q-factor of Si, since there are still structural energy losses caused by the attachment and sealing of the structure, and losses at the boundaries of the semiconductor-piezoelectric section.
It can be assumed that the thermal action will more effectively affect the processes of "healing" of defects caused by the implantation of impurities.
The resonant method of measuring the value of Q-factor is the more accurate the higher the figure of Q-factor.
The symmetric and asymmetric multilayer structures of a semiconductor-piezoelectric are analyzed on the basis of a model of a “thin and wide” plate and approximate expressions are obtained for maximum deformation in a silicon wafer as a function of the material properties of a semiconductor and piezoelectric material and their structural features. 2.

Finally, considering the shale gas development in China as an example, the structural integrity (casing deformation) and seal integrity (Sustained Casing/Annulus pressure, SCP/SAP) were analyzed by clarifying the failure mechanism from the view of well integrity issues affecting shale gas production.
Finally, considering the shale gas development of China as an example, the failure mechanism of structural integrity (casing deformation) and seal integrity (Sustained Casing/Annulus pressure, SCP/SAP) and their influences on the single shale gas well production are analyzed from the perspective of the well integrity failure affecting shale gas production.
(2) Engineering Aspects The shale gas well casing deformation may occur at any stage of the gas well entire life cycle and is not caused by a single factor in a single stage but is a coupling result of multi-stage multi-factor.
The factors affecting the seal integrity of cement ring include [9]: (1) geological factors: leakage causes poor interface cementation and cement stone strength decline in high temperature; (2) drilling factors: well geometry and poor drilling fluid performance, low displacement efficiency, poor cementing quality, etc.; (3) cementing factors: poor cement slurry performance, mechanical properties of cement stone do not meet long-term sealing requirements; (4) development factors: many factors including fracturing, workover and adjustment lead to Impact Analysis of Failure Mechanism.
If not taken seriously, it will affect subsequent construction, and increase costs, and even affect safety production in the long run, resulting in inevitable economic losses.

Influence its forming factors are also many (such as mould shape, materials properties, blank of shapes and sizes, the friction and lubrication between mould and sheet, etc.).
Long debugging cycle and the high cost directly affect the production efficiency of front fender [1,2].
Research on an Evaluating Model of Stamping Process Plans for Automobiles′ Panels [J].Mechanical Science and Technology, 2006, 25(2): 181-183.
Beijing: Mechanical Industry Press, 2003.
China Mechanical Engineering, 2003, 14(1): 20-22.

This study considers the computational structural mechanics, collision theory multidisciplinary factors, according to the work characteristics of three typical stages of docking process, dynamics analysis using ADAMS software.
Flow chart of ADAMS analysis 2) Due to the complex mechanical system, where the system is decomposed into several subsystems.
The physical properties between the reflected part correct, accurate definition of motion between components, is the key to set up the simulation model.
The process of modeling, the extracted effective element, element of overall system performance to omit some does not affect.
The connected components in a follow-up work as a whole body to deal with, so does not affect the results.

Thus, this short review describes the various effects that affect the thermal conductivity of natural fiber reinforced polymer matrix composites with additions of metallic filler.
The harness of natural fiber into conductive polymer composites not only shows valuable properties or characteristics, but also diminishes pollution on the environment as well as waste disposal [1].
The only factor that causes the difference in thermal conductivity between single chain polymer and bulk polymer is the phonon mean free path, l.
This means that the filler shape in terms of size and aspect ratio are part of the factors that affect the thermal conductivity.
Filler orientation is equally important as other factors mentioned.

It has an advantage for avoiding from repetition of experiment as several factors are utilized in experiments.
The variables in this study contained three numerical factors of ambient humidity, applied voltage and tip speed.
Chang, Design of experiment (DOE) method considering interaction effect of process parameters for optimization of copper chemical mechanical polishing (CMP) process, Microelectronic Engineering, 83 (2006) 506-512
Mahmood, Physical properties of fish gelatin-based bio-nanocomposite films incorporated with ZnO nanorods, Nanoscale research letters, 8 (2013) 1-6
Rusop, Optical properties of well-aligned ZnO nanostructure arrays synthesized by an electric field-assisted aqueous solution method, Ceramics International, 40 (2014) 11193–11198

Intorduction Ceramics is a general term of inorganic raw materials on Earth products made by high temperature treatment.Fine ceramic is compared to traditional ceramics, it is using the purity and ultrafine powders of raw materials, the fine structure obtained through a special processing technology and the inorganic non-metallic materials with a variety of functions, with excellent mechanical properties (high temperature strength, high corrosion resistance, high wear resistance) and low density (approximately equal to the steel 1/2).Fine Ceramics can be divided into two categories of engineering ceramics and functional ceramics.
Its unique sound, light, heat, electric, magnetic and other physical properties and biological, chemical, and mechanical and other properties of functional ceramics, engineering and technology play a key role, such as the manufacture of electronic circuit capacitor dielectric porcelain, manufacturing high-frequency integrated circuit substrate and shell and tube insulating ceramic[1].
Today, By the research the physics, chemistry and structure of the complex multi-oxide system on the nanometer scale, composition, the relationship between performance and use performance, and by means of ion replacement, doping adjusted to optimize its function, there have been many excellent performance or special properties of nano-functional ceramics.
The problems of functional ceramic applications The main obstacle about the application of functional ceramic materials from the two aspects of price and reliability.now,prices of ceramic parts is expensive than metal parts,Such as ceramic piston pin and valve program production costs for 2.5 times than the same metal parts,The factors affecting the reliability of ceramic parts was that manufactured may have internal cracks,The size of this crack shape and orientation is random,sometimes can be cause brittle failure due to crack propagation,therefore, its strength is random nature,The strength of the ceramic parts fluctuated ,high temperature strength has declined.Expert analysis,Overcome the defects of the ceramic material prices and reliability is difficult to protect the certificate requires a time course.Engine ceramic material applications only from small to large,from easy to difficult,From the anti-friction ,wear-resistant to insulation,from parts to the whole machine,progressive
References [1] Jing Xue, Jiuyun Zhang:Mechanical&Electrical EngineeringMagazine.