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Grinding process is a very complicated process with multiple related factors, severely nonlinear and coupled.
Grinding wheel wear, grinding temperature, vibration are main factors affecting job quality and machining efficiency.
Its response of force shows that the dynamic properties are good and the force will reach steady state in 1~2s when grinding depth changes suddenly.
Force response also shows good dynamic properties.
Li: China Mechanical Engineering, Vol.13 No.1, pp.1-4

The L9 orthogonal array was concerned to design experimental matrix for four factors with three levels.
The L9 orthogonal array was used to design experimental matrix for four factors with three levels.
The factor design is variated by using four factors and three levels as shown in the Table 1 and Fig. 2.
Factors and levels of gasket design No Factor Level 1 Level 2 Level 3 1 Radius convex (R) 2 mm 2.5 mm 3 mm 2 Pitch (P) 5 mm 5.5 mm 6 mm 3 Over hang (OH) 2 mm 2.5 mm 3 mm 4 Lip height (h) 0.2 mm 0.3 mm 0.4 mm Overall length (fix) OH p h length (fixed) R Fig. 2.
Properties material determined from tensile test based on JISZ 2241 standard is: Ø Modulus Young (E) = 48670 MPa Ø Poisson ratio (v) = 0.3 Ø Yield Stress (σy) = 300.34 Mpa Ø Tangent Modulus (H) = 483.33 Mpa In the manufacturing stage, gasket product is formed by using press hydraulic machine.

Researchers are attempting to improve the properties further with the addition of another fiber in the same matrix (hybridization).
The cutting tool material and the geometry also play a vital role in affecting the thrust force and delamination as reported in [3].
Reference [4] shows that there is an enhancement in the flexural and tensile properties because of the addition of nanotubes.
Though all interactions between the factors significantly affecting the delamination, maximum contribution of 17.30% was observed with the interaction between cutting speed and feed rate.
From Table 5, the mean grades of various factors at chosen levels can be observed.

Formation material is benefits to improve resin’s properties such as infiltration ration, thermal conductivity and anti-creep property, meanwhile increase the dispersion of CNTs.
Experiments selected foam Ni as matrix via CVD method prepared foam Ni/CNTs and expected CNTs will deposited around the foam Ni’s surface more adequate without any effect of the foam Ni’s original properties.
Its dimension at nanometer and highly aspect ration in axial tensile strength besides the signal wall CNTs properties are more outstanding [2].
Consider these factors the catalyst PH value should be controlled in 7-8 and pyrolysis temperature unfavorable exceed 650℃
References [1] Zhanjun Liu, Quangui Guo and Yan Song: Carbon seal materials with superior mechanical properties and fine-grained structure fabricated by a new process, Material Letter Vol. 61(2007):1861-1869 [2] Varela-Rizo H, Rodriguez-Pastor I, Merino C, Martin-Gullon I.

Load variation and loading rate are key factors affecting wind turbine stability and life cycle.
Even though we adopted the mechanical system model, the whole wind turbine model is still nonlinear because of characteristics Based on blade element momentum theorem, the load acting on each blade root is mainly affected by two factors: relative wind speed variation vfi and pitch angle variationβi.
It consists of the stochastic disturbance. z(t) is the signal that allows to characterize whether a controller has certain desired properties and is called controlled variable or performance variable.
For mechanical structure with several degrees of freedom, the Lagrange equation: ddt∂Ek∂qi-∂Ek∂qi+∂Ed∂qi+∂Ep∂qi=Qi, (10) Ek, Ed andEprefers to kinetic energy, consumed energy and potential energy respectively.
Conclusion Fatigue loads affect the performance, safety operation and life cycle of wind turbine.

The experimental measurements of the joint properties were also thoroughly presented in [7].
The mechanical and physical properties of the base superalloys Inconel 718 and Mar-M247 are summarized in Table 1 [7].
The properties of WL was presented in Table 1.
Concentration factors in the welded zone of IN718 side.
Nathal, The Mechanical Properties of Candidate Superalloys for a Hybrid Turbine Disk, NASA/TM—2013-217901

Analysis results of eight kinds of conditions showed that the square pyramid partial double layer of Schwedler spherical reticulated shell has good mechanical performance.
Analysis the mechanical properties of spherical reticulated shell based on these parameters.Figure 3, figure 4 and table 1 are given respectively with the displacement and the stress nephogram of spherical reticulated shell and the maximum displacement value and the most unfavorable stress values.
At this time, grid number Kn, Nx were the important factors affect the maximal displacement and the most unfavorable stress of the structure.
But the decrease of the maximal displacement amplitude was much bigger than the increase of the most unfavorable stress amplitude that means the increase of square pyramid unit thickness has beneficial effects on the mechanical properties of spherical reticulated shell.
The thickness of square pyramid unit is one of the important factors affects the mechanical performance of structure, and provides theoretical reference for relevant engineering design.

According to range analysis, the sequence of factors including the individual factors and interaction factors that we obtained is PP, SP, PP×CP, CP, CP×SP, PP×SP, CP×PP×SP.
But the other two factors affecting the change impact on tap for life hasn’t been considered.
Proved that cryogenic treatment improved the mechanical property of HHS greatly[6-8].
Since three factors all influence the HSS tap life, and various combination of three kinds of factor led to different HSS tap life, it is necessary to ensure the effects sequence of factors, including the factors and interaction effects of factors.
There were three factors are considered in the test, so the number of the factors was 3.

Environmental factors in the atmosphere - humidity, temperature, rainfall, high concentrations of various aggressive and non-aggressive substances in the air, sunshine have negative affect on the service life of structures, machines and other equipment which are located not only in the external environment.
And therefore there is a possibility of measurement of environmental factors or study in detail their effect which increase aggressiveness of the environment addressed.
One of the most important factors affecting corrosion processes is the position and location of the surface within the structure.
Reactions also depend on properties of the metal itself.
References [1] Černý, M., Corrosion properties of metal structural materials, SNTL Praha, 1984.

The paper presents a study of the effect of technological parameters on the bending strength of pressed bamboo pulp plywood in order to enhance the mechanical properties of a new domestic product of construction in Vietnam. 1.
In the 2n DOE, 2 subtypes are full empirical factor and empirical partial factor [5]: Full planning is a simple experimental plan, when each element has 2 levels; the number of influential parameters is n so the number of experiment is a form of 2n.
The accuracy of the regression equation is worse than the full empirical factors DOE but it not much change if we only consider the combined effect of the two parameters.
The full empirical factors DOE for receiving best result because we only analyze the effects of the three most influential parameters.
Islam, "Properties of particleboard manufactured from commonly used bamboo (Bambusa vulgaris) wastes in Bangladesh", Advances in Research, vol. 4, no. 3, pp. 203-211, 2015