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Introduction Single crystal silicon are the important substrate materials of integrated circuits and TR optical materials because of its choiceness properties, such as high mechanical strength, steady chemical property, high refractive index, few dispersion and good optical constants[1].
And the actual value of roughness is determined by the properties of silicon.
Table 1 The orthogonal experimental scheme L25(53) factors ap f n levels （） （mm/min） （r/min） 1 1 1 4000 2 2 2 5000 3 3 3 6000 4 4 4 7000 5 5 5 8000 Fig.4 The site of presetting cutter The detection of the experimental results.
And the influence factors of the roughness include R, f, n and ap.
Wu: China Mechanical Engineering, Vol. 25(2014)No. 3, pp. 290-294.

Physical factors are usually presented by the mechanic load and are solved by the appropriated design of reinforcement and mechanical parameters of used concrete.
In case of action of chemical factors it is necessary to strengthen primary defence of concrete determined by its composition and the internal character of porous system.
Presented evolution of mechanical properties is not common in case of application of a pozzolana.
Reference mixture and mixture with 30 % replacement reached quite similar results although mixture III had very satisfactory mechanical properties.
On the other side residual mechanical properties are better compared to the reference mixture.

Thus, a rotational speed is another variable affecting DFT of the part.
The spray time, nozzle rotation, spindle rotation speed and their interaction are prime factors that induce the significant change to DFT.
The criteria used to determine the significant factors are the p-value.
Archives of Civil and Mechanical Engineering.
Wang: Influence of Spraying Parameters on the Microstructure and Properties of Plasma-Sprayed Al2O3/40%TiO2 Coating.

It features properties that enable measurement and testing across various pressure parameters, with particular emphasis on the selection of appropriate materials
Additionally, the artificial model eye can simulate other factors that may influence the accuracy of measurements related to the monitored parameters
A numerical model as a basis for the construction of a new standards device with a model eye (ideal eye) and cornea was created with respect to their geometric and physical properties [7, 8, 9].
Factors affecting measurements of IOP using non-contact eye tonometer.
Glaucoma vs. biomechanical properties of cornea.

The mechanical properties of the composites were improved as kenaf fiber loadings increased.
In addition, the mechanical properties of natural fibers such as flax, hemp, jute, sisal and kenaf are comparable with glass fiber in respect of strength and modulus [4].
There are many factors affect the mechanical and physical properties of the polymer composites such as incorporation of reinforcement fillers, chemical treatment and wetting process.
Figure 3: Flexural strength of kenaf-epoxy-MMT-CTAB composites Summary The incorporation of kenaf, MMT and MMT-CTAB has profound effect on mechanical and physical properties of kenaf-epoxy composite.
The addition of kenaf can increased the mechanical properties of the composite.

The technological characteristics and influence factors of CS welding.
Two methods mentioned above are compared, it is concluded that the latter may obtain good mechanical properties of welding joint.
Because of very fast speed of CS welding, it is not difficulty to obtain uniform microstructure and high mechanical properties of CS welding joint.
There are great differences in the physical and chemical properties of the base material, it has great trouble in the actual welding.
The present research mainly focused on the effect of welding parameters on the properties of the joint.

In this research, in order to simulate both thermal and mechanical transient behavior in FSW butt joint of two plates simply and precisely, a combined method of MPS and FEM was developed and it was applied for revealing the dominant factors of inherent strain generated in FSW.
In both thermal and mechanical analyses using FEM, the physical properties should be defined to be temperature dependent [4].
Summary In order to simulate both thermal and mechanical transient behavior in FSW butt joint of two plates simply and precisely, a combined method of MPS and FEM was developed and it was applied for revealing the dominant factors of inherent strain generated at FSW.
Bhadeshia, Recent Advances in Friction-Stir Welding – Process, Weldment Structure and Properties, Progress in Materials Science, 53 (2008) 980-1023
Murakawa, Numerical Study of Factors for Generating Inherent Strain in Friction Stir Welding, Trends in Welding Research 2012, Proceedings of the 9th International Conference, (2013) 922-929

In the paper, based on the aqueduct design, aqueduct model making, aqueduct structure calculation and static load experiment, the whole process of design and calculation of continuous beam truss aqueduct model are performed, and the analysis of its mechanical properties are also carried on.
But arch curve bending moment is smaller, and this gives full play to the mechanical properties of the materials[4].
In addition, the paper pole is easy to appear a certain degree of distortion or damage, so this will easily change the mechanical properties of paper pole.
Because of the complexity of the tank body stress calculation, a two-dimensional plane model is simplified, and some factors such as wind load are not taken into account.
What is more, this can also affect the navigation.

New generation bonding agents featuring high mechanical strength are widely available on the market.
It features very low consumption and aging factor, which means it, is one of the best dental materials available on the market [2].
Any material with those properties is not easy to etch.
The bonded joint tests must allow for a large number of factors affecting the joint quality, that can be classified in two groups: technological - method of material surface preparation, bonding agent type, curing conditions and structural - material thickness, bonded joint thickness, joint dimensions [5,6].
A snow-white material after curing shows a significant increase in mechanical properties.

Pulse echo method is affected by the material surface roughness and the acoustic attenuation, and when the medium thickness is smaller than the double wavelength, the echo of medium surface will be mixed up together, so it is not easy to distinguish.
Coating elastic modulus Coating elastic modulus is an important parameter of the coating mechanical properties, now there are many damage evaluation methods for coating elastic modulus, such as vibration membrane, tympanic membrane, bending beam method, the indentation method, etc.But there are certain limitations with various methods, such as vibration membrane method is not suitable for coating which thickness is larger.Bending beam method is strongly influenced by the thickness of the coating.Indentation method results is closely related the loading charged, and it has a poor repeatability.
The surface quality of the coating Coating surface quality is also the important factors influencing the coating performance, the current detection method for surface quality of the coating are mainly visual inspection and penetration.The visual inspection is very convenient, and the result is intuitive, but it has a low sensitivity to detect surface fine defect .Penetration testing technology can find the surface coating’s subtle defects, it has a high sensitivity, but the reagents are volatile and toxic. 5.
Residual stress in the coating In the manufacturing process, coating will produce residual stress, if residual stress is too large, it will affect the use of the coating performance.The coating residual stress test method has the destructive test, such as bending method.Because ultrasonic method has no damage to measure residual stress,so it shows technical advantage, ultrasonic testing technique includes reflected p-wave method,electromagnetic ultrasonic testing, laser ultrasonic testing, etc.
Hess, Laser diagnostics of mechanical and elastic properties of silicon and carbon films,J．Applied surface science.106(1996),429-437.