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The overview of properties will be provided.
The importance of energy is further weighted by several political and economic factors.
[5] Auerkari, P., Mechanical and physical properties of engineering alumina ceramics.
[6] Zheng, M., et al., Microstructure and mechanical properties of Aluminum Borate whisker-reinforced Magnesium matrix composites.
Pearson, Factors affecting the grain-refinement of aluminum using titanium and boron additives.

The factors which influenced the content of carbon nanotubes in deposits, such as the types of agitation, surfactants and carbon nanotubes concentration in the plating bath, were examined.
Carbon nanotubes (CNTs) have superstrong mechanical properties [10,11] and good lubricity as graphite [12].
These properties of carbon nanotubes make them to be possible in developing composite coatings with excellent comprehensive properties.
Obviously, this surface structure of the coating might be excellent tribo- logical properties and high wear resistance because of the superstrong mechanical properties [10,11] and self-lubri- cation of CNTs [12] in comparison with the Ni-P coatings without carbon nanotubes.
The important factors affected the content of carbon nanotubes in the deposits were the surface properties of the tubules and the movement of carbon nanotrubes in the bath nearby the depositing surface.

The chemical composition could affect the coating mechanical properties such as thermal expansion coefficient, creep and plastic.
The factors affecting the rumpling formation on the NiPtAl coating still need to be found out.
The mechanical properties, such as thermal expansion coefficient among the oxide, bond coatings and substrate layers were dynamically changed with increasing the exposure time.
The γ´-Ni3Al could induce local coating mechanical properties inhomogeneous besides changing the properties of the whole coating, which drastically changed the stress distribution and appeared to make some contribution for the rumpling after cyclic oxidation.
The γ´-Ni3Al formation changed the mechanical properties of local part for the coating and induced cracks formation within the ridges.

Because of the existence of high stress in the surrounding rock of deep roadway, the physical and mechanical properties of the surrounding rock to change, and the surrounding rock stress distribution is very different from the shallow, so the way of shallow roadway support is not suitable for deep roadway.
Deep soft-rock roadway support is a complex systems engineering, it should consider the different geological conditions, roadway scope of application, construction technology conditions, construction period and the cost and other factors to determine the optimal combined support program, if the special geological conditions encountered in the construction, it should be timely to improve the supporting program to meet the construction safety and ensure the quality.
Roadway which is in a high stress environment, especially in the region which tectonic activity is strong, the residual tectonic stress is large and the engineering properties of rock mass bad, the deep roadway gradual emergence of the mine pressure behavior strongly, roadway deformation big and difficult to maintain and other phenomena, it not only results in production efficiency and economic benefit decline, and causes some damage to property, even threaten the safety of staff’s life in the underground.
Qiao Weiguo and other scholars (2011)[4]based on results of mineral composition analysis, rock’s mechanical property test and geological mechanics test of the roadway surrounding rock in Tangkou Coal Mine buried at a depth of over 1000 meter, bolting-grouting combined support scheme was proposed to the support design of deep swelling soft-rock roadway under high stress.
Summary Deep soft-rock roadway support is a complex systems engineering, it should consider the different geological conditions, roadway scope of application, construction technology conditions, construction period and the cost and other factors to determine the optimal combined support program, if the special geological conditions encountered in the construction, it should be timely to improve the supporting program to meet the construction safety and ensure the quality.

Introduction The austempered ductile iron (ADI) has good and comprehensive mechanical properties, and it has been used more and more widely in automobile, mine, and agricultural machinery and so on [1,2,3].
The objective of this work is to investigate the microstructure, mechanical properties and abrasive resistance of CADI under different level of austempered temperature and to conduct the field test of CADI mill ball.
This results show that austempering temperature influences greatly the mechanical properties of CADI in range of 230℃-290℃.
The austempering temperature is an important factor which affects the diffusion coefficient of elements and the nucleating ability of acicular ferrite.
Gao Song Liu Jin-hai Li Guo-lu Xu Zhuo and Zhu Chen , Effect of Austempering Temperature On Microstructure and Mechanical Properties of CADI, China Foundry, 2008, 57(3) [7].

Introduction Carbon fiber reinforced plastic (CFRP) composites play a significant role in the automotive, marine, electronics, medical, and aerospace industries thanks to their unique, high performance, and tailorable mechanical properties [1].
The unique and tailorable properties of CFRP come from its fiber orientation, fiber and matrix properties, and relative volume of the fiber and matrix [1].
In term of cutting tool effect, tool geometry is one of the main factors in reducing thrust force.
Chao, Study on drilling characteristic and mechanical properties of CFRP composites, Acta.
Fiver stage representation of drilling and factors affecting maximum force and torque, Int.

The grain refinement of the primary crystal α makes it changes from coarse columnar dendritic structure to fine equiaxed structure, the mechanical properties of the alloy greatly improved.
However, the temperature when the Al-Si alloy works is often still far from the eutectic point temperature, as this point, microstructure and mechanical properties of the alloy are changed, it is we need to know.
According to F distribution table F0.05(4,4)=6.39, F0.1(4,4)=4.11, when F> F0.05, F> F0.1,that is significant factors.
And the insoluble phase in the alloy grain boundaries and intragranular dissolve more fully, components are more uniform, the mechanical properties the better.
Solid solution is at low temperature, diffusion driving force is small, atomics diffusion is limited, so distribution of alloy elements is uneven, the alloy grain boundaries and intragranular the more insoluble phase residue, have fragmented the role of the matrix, affect mechanical properties.

Effect of various heat treatment processes on the impact property of a low-carbon steel was investigated.
The evolution of the impact toughness with process parameters will be mentioned and the factors which influence the stabilization of the retained austenite and impact toughness will be identified.
Results and discussion The quenching temperature is the most critical factor affecting the final microstructure and properties.
The tempering time is also a factor affecting the tempering microstructure.
It is clear that such processing parameters as quenching temperature, carbon partitioning time, tempering temperature and time determine the volume fraction and the stability of retained austenite, and thusly the mechanical property of the tested steel.

As calculating, it should use the measured average data of testing model and the measured average data of steel, mechanical properties of concrete and steel can be seen from table 2-1～table 2-2.
Fig. 2-1 Steel drawing of Experimental beams Table 2-1 Mechanics properties of concrete concrete grade compression strength(MPa) modulus of elasticity(MPa) tensile strength (MPa) C30 37.95 2.95×104 3.78 Table 2-2 Mechanical properties of steel bars Steel bar diameter D/mm yield strength(MPa) ultimate strength(Mpa) modulus of elasticity(GPa) 16 400 610 204 8 315 465 200 The Strengthening of Experimental Beams.
The properties of CFRB and related adhesive see table 2-3 and table 2-4.
Moreover the construction quality is also the key factor that it can affect reinforcement.
(5)When CFRP reinforced beams withstand high loads, its bearing capacity is mainly decided by the adhesive and mechanical properties of the concrete,moreover the construction quality is also the key factor that can affect reinforcement effect.

(a) Location (b) Constitution Fig.1 Photos of tou-kung Due to sorts of factors, constitution problems such as deformation, crack and so on always appear on tou-kung members, which affect aseismic performance of tou-kung.
Both problems reflect decrease of mechanical performance of tou-kung as a whole assemblage.
Fig.5 Decay of tou-kung member CAUSATION OF PROBLEMS By analysis it is found that factors responsible for aseismic constitution problems of tou-kung in the Forbidden City include as following: (1) Constitution characteristics: by constitution a tou-kung is assembled by layers of wooden members, which are connected among each other by wooden bolts, as shown in Fig.6.
Fig.6 Bolts of tou-kung (2) Material property: wood material properties relate closely to aseismic constitution problems of tou-kung.
Virtue of this method is that it affects little to appearance of tou-kung.