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Abrasion on the surface of the moving parts, produced when machinery keeps running for a period of time, is embodied by widening clearance, which, in return, causes imbalances and impact and consequently intensifies abrasion, thus affecting work of machinery.
This paper holds that there are many factors determining kinematic accuracy from both macro and micro aspects.
In macro aspect, there are two major factors-static dimension type and dynamic characteristic type.
Factors in micro aspect will not be discussed here.
As can be seen, not only are size & clearance-related factors closely related to cam abrasion, but dynamic characteristic-related factors, due to their influence on kinematic position, kinematic acceleration, are related to impact and vibration, thus affecting abrasion as well.

Sec. 1 Taiping City, Taichung County 411, Taiwan a mytsai@ncut.edu.tw Keywords: Chemical Mechanical Polishing; Polyurethane Pad; Diamond Conditioner Abstract.
A diamond conditioner or dresser is needed to regenerate the asperity structure of the pad and recover its designed ability in chemical mechanical polishing (CMP) process.
Foam density, open or closed cells, cell shape along with the intrinsic polymer properties determines the final pad properties [12-13].
The dressing rate was one of the most important factors that affected the surface condition of the pad.
Gutmann: Chemical Mechanical Planarization of Microelectronic Materials (John Wiley & Sons, NY 1997)

The finite element method can reflect the nonlinear characteristics of the coupling effect between composite foundation pile, soil and the soil around the pile, the soil using elastoplastic model, and considering the different medium, different distribution, which has great advantages in the analysis of various factors.
Soft soil foundation with low bearing capacity, high settlement, consolidation engineering characteristics of long time negative, built on soft soil foundation in highway, over the years has been a major technical problem in highway construction [1]-[5].Due to computational mathematics model, different, different properties of soft soil, as well as the investigation method, construction technology and other differences, which makes the problem more complicated and outstanding.
Plastic strain increment can be written as: (3) As the hardening parameter type, such as material only elastic deformation, then = 0, in the plastic deformation, ： or （Elastic） (4a) ， （Plastic ） (4b) Through the above equation can be deduced from the following useful relationship between stress increment and strain increment in the elastic-plastic mechanical properties: (5) In this equation：
(6) This paper calculated the soil is divided into five layers, physical and mechanical properties of soil is shown in Table 1, calculated using this numerical simulation model.
Table 1 Physical and Mechanical Properties of Layer Index Value Thickness Soil Name Moisture Contentω The Natural Density ρ Stem Density ρd Void Ratio e Liquid Limit WL Plastic Limit Wp Plasticity Index Ip （%） （g/cm3） （g /cm3） (%) (%) 2 Clay 30.6 1.92 1.47 0.871 42.5 22.4 20.1 4 Silt Clay 50.1 1.71 1.13 1.414 44.1 23 21.1 4 Silt 22.9 2.01 1.63 0.645 26.2 20.7 16.2 4 Silty Clay 28.2 1.92 1.49 0.809 28.4 17.3 11.1 8 Silty Clay 18.7 2.10 1.76 0.532 21.3 11.2 10.1 Figure 1Model of Soft Soil Subgrade Figure 2 Cement Mixing Pile in Treatment of Subgrade Model The results of finite element calculation For the embankment was calculated according to two different conditions, the results are as follows: Figure 3 Settlement Nephogram of Vertical Displacement Figure 4 The Average Stress Nephogram (unit: KN/m2) By not reinforcing roadbed can be seen

The main factors leading to the reduction of GTE service life are as follows: 1. dust erosion mainly affecting compressor blades; 2. corrosion; 3. high temperature oxidation mainly affecting the turbine blades and vanes of compressor last stages; 4. high temperature gas corrosion and erosion of combustion chamber components and turbine blades.
Each of these factors has varying degrees of impact on engine components intended for various purposes.
Stator blades are not exposed to considerable mechanical loads; therefore, the determining factors of stator blades are oxidation resistance and airfoil retention rather than high-temperature strength.
This property is one of the most important factors determining the heat resistance of a coating.
Leontieva Properties of materials. - M.: Mashinostroenie (1990) 527

Introduction The shape and position error on mechanical processing of the workpiece will not only affect the overall quality of the mechanical products, but also affect interchangeability of parts.
The flatness tolerances on mechanical workpiece can reflect the smoothness degree of the workpiece plane, having a significant impact on measurement accuracy (with the binding properties of the plane) and sealing performance of the instrument.
The minimized risk function R (c, ε) is equivalent to the function J: (4) Where, ξi and ξi* are the relaxation factors.
Table 1 The processing test data of ultra-precision lathe machining surface The number of sets n/(r·min-1) u(mm·min-1) U/V f/μm 1 200 50 125 0.27 2 400 100 65 0.24 3 500 150 100 0.18 4 300 134 55 0.24 5 800 145 70 0.13 6 200 80 130 0.25 7 400 130 150 0.28 8 500 180 120 0.25 9 300 172 95 0.22 10 400 190 85 0.19 … … … … … 46 250 50 110 0.18 47 450 100 145 0.13 48 550 120 115 0.24 49 350 90 85 0.27 50 300 190 115 0.31 2.4 The creation of soft-sensing model of flatness error on the surface of machining workpiece According to processing factors which affect flatness on the surface machined by ultra-precision lathe, as shown in figure 1, the structure of soft-sensing model of flatness error on the machining surface is established, the speed of spindle n, the moving speed of carriage uy and the voltage of piezoelectric ceramics micro-feed drive U are used as input parameters of soft-sensing model of flatness error on the machining surface, the actually measured value of flatness error f is used
Advances in Mechanical Engineering, 2010, 2010: 1-11

The side length of the cubic specimens (represented with a) are three kinds of 100,150 and 200 mm, also the impact of factors of porosity and coarse aggregate size of concrete are studied.
Values in table 4 do not have the statistical properties due to the small number of samples, great discreteness of material and change of Cv with a variety of factors, however, there is a certain degree of rules in the data.
There is a certain correlation between these two factors and the impact of size on strength.
Experimental Study on Size Effect of Mechanical Properties of Large Size Fly Ash Concrete, Proc.
BARRAGÁN, Variability of the Bond and Mechanical Properties of Self-compacting Concrete, Volume 1, Number 1 (March, 2008) pp. 31-57.

In order to ensure the mechanical properties and durability of concrete, the setting times of new concrete accelerator is not the shorter the better, the appropriate initial and final setting times are 1min30s~5min and 4min~ 12min respectively.
Prudêncio et al [6] found that the fineness of cement, the species of gypsum, gypsum content and content of C3A are the main factors influencing the traditional accelerator performance by changing the chemical composition of cement, fineness etc.
Liquid alkali-free accelerator is more and more widely applied because of its excellent properties of durability in physics and mechanics, therefore it is very necessary to research its compatibility with cement.
On the base of JC477, appropriately increase the amount of water reducer agents in terms of their types and properties according to the European standard.
In order to ensure the workability, mechanical properties and durability of cement and concrete, setting times of accelerator is not the shorter the better, the appropriate initial and final setting times of accelerators are 1min30s~4min and 4min~10min respectively.

This mal-distribution has a significant effect on the performance of the heat exchanger by increasing the pressure drop and affecting the heat transfer characteristics.
Flow mal-distribution is induced by many factors such as geometry, operating conditions, viscosity, density, fouling, multiphase flow etc., and can be reduced by modifying the parameters such as area of cross section of manifold, number of channels, length of channel, diameter of channel position of inlet/outlet, fluid and Reynolds number.
(2) Setup starts with giving the type of model, working fluid, its properties and boundary conditions.
The working fluid, its properties, viscous model and boundary conditions used are shown in Table 2.
The parametric studies show that instead of reducing the diameter of all the channels, reducing the diameter of channels with higher flow rate results in reduced flow mal-distribution without affecting the pressure drop across the heat exchanger.

The mechanical performance of the mortars was affected by the poor interface between the geopolymer and Ichu fiber reinforcement.
Korniejenko, “Mechanical Properties of Wood Fiber Reinforced Geopolymer Composites with Sand Addition,” J.
Mikuła, “The overview of mechanical properties of short natural fiber reinforced geopolymer composites,” Environ.
Adamski, “Mechanical Properties of Geopolymer Composites Reinforced with Natural Fibers,” Procedia Eng., vol. 151, pp. 388–393, 2016, doi: 10.1016/j.proeng.2016.07.395
Low, “Synthesis and mechanical properties of cotton fabric reinforced geopolymer composites,” Compos.

The conductive ceramic based composites, nowadays, are manufactured by some special processes [5] Ahmad and Sueyoshi (2010) [6] have studied the effect of sintering temperature on the mechanical properties and electrical properties of silicon nitride and titanium nitride composites.
• From the each level affecting factors in GRA is A2B1C2D3.
Here Pulse on Time influences more compared to other factors.
Microstructure and mechanical properties of silicon nitride–titanium nitride composites prepared by spark plasma sintering.
Properties of Si3N4–TiN composites fabricated by spark plasma sintering by using a mixture of Si3N4 and Ti powders.