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Therefore the surface roughness of sapphire is an important element that substantially effects LED performance.[3-4] Also, as sapphire is also used as the substrate for GaN and GaAs semiconductos which are optical devices that emit light, the high transmittance and low haze properties are also important factors impacting LED performance.[5] Sapphire glass, which has gained increasing popularity in recent times, is replacing conventional reinforced glass with its higher strength, scratch-resistance, lighter weight, and higher infra-red rays transmittance.
Due to the various uses, many studies are investigating the varying physical properties yielded by different thicknesses of sapphire.
In the present study, sapphire specimens of varying thicknesses were CMP treated, and the surface roughness, transmittance and haze characteristics of the samples at varying thicknesses following the same polishing process were observed to study the impact of the thickness of sapphire on physical properties following polishing.
Experimental Method To identify the impact of sapphire thickness on the physical properties of sapphire following CMP treatment, sapphire samples with thicknesses of 1mm, 3mm, 5mm, and 7mm were used.
As for the polishing slurry used in CMP (Chemical Mechanical Polishing), a diamond slurry was used.

Preparation and Friction Feature of TiAl-based Wear-resisting Self-lubricating Composite Haoran Geng 1,a, Min Wang 2,b，He Wang 1,a, Hua Guo 1,a 1 School of Materials Science and Engineering，University of Jinan,Jinan,Shandong Province,P.R.China 2 Industrial Group of Shandong University, Shandong University, Jinan,Shandong Province,P.R.China Key words: TiAl alloy; high temperature self-lubricating; mechanical properties; friction and wear.
On the other hand, Ti and Al in the matrix as well as the proportion of additives are of key factors for design of composition.
For mixing up of CaF2 and BaF2, the key factor lies on the ratio of these two materials.
(a ) 5%CaF2+BaF2 (b) 10% CaF2+BaF2 Fig.2 Microstructure of TAS material with different CaF2+BaF2 The results showed TAS material has good mechanical properties, experimental analysis related to the mechanical properties of this material will be discussed in another paper.
(2) CaF2+BaF2 lubricant can combine with matrix of TAS material well, and won’t affect formation of TiAl compound basically.

High hardness and withstands wear are important properties and also has relatively high resistance to shock.
So, there are several factors affected to quality of surface such as Power setting, Off time off, Wire feeding, Wire tension and Wire offset.
The ANOVA was showed that the main factors affect to response is only power setting as shown in Table 5.
Pongpal, The study of influenced factors affecting to quality of High Chromium Cast Iron Cylindrical Grinding, The Proceeding of The 2nd Inter.
Conf. on Mechanical and Electronics Eng.

It also creates a basis for constitutive models for porous materials whose time-dependent properties, such as shrinkage, creep, strength etc., are strongly affected by the moisture and temperature fields.
Mechanical Properties and Frost Resistance Young’s modulus was measured by the ultrasonic pulse method using the travel time of ultrasonic wave passing through the material.
On the basis of data given in Table 3, one can assume that the dominant influence on materials structure formation had the physical factors, especially the sedimentation pressures.
Mechanical properties are summarized in Table 6.
The effect of porosity on the mechanical properties of the analyzed sandstones was apparent but the mineralogical composition played an important role as well.

The mechanical factors affect the restenosis after stenting and image-based simulation has become a popular tool for acquiring information.
Several risk factors such as smoking, hypertension, diabetes mellitus and high cholesterol have been identified which contribute to the progression of coronary artery disease [1].
The neotimimal hyperplasia is affected by mechanical factors, such as wall strain distribution and blood flow induced wall shear stress [5] and local arterial wall stress [6].
These studies aim at predicting and calculating the wall stress state generated after a coronary intervention and investigate the role of mechanical factors on the occurrence of restenosis after stenting.
Simplified approaches have improved the understanding of the structural properties of coronary stents.

Practical experience shows that the mechanical vibration of the offset press is an important reason to affect the print quality.
Analysis of printing part The progress of printing is interaction with many factors.
Of them the important ones are: technology of materials properties, interaction conditions and the ever changing environment.
Vibration of offset printing machine is a critical factor influencing printing quality.
Summary Practical experience has shown that the vibration produced by the printing presses at high speed will make the quality of printed products greatly affected.

Factors Influencing the Suitability of Thermal Methods for Stress Analysis of NiTi Shape Memory Alloys J.
The material assumptions made to facilitate Thermoelastic Stress Analysis (TSA) are linear elasticity, material homogeneity and isotropy, and mechanical properties that are independent of temperature.
The unusual shape memory and superelastic properties of near equiatomic NiTi alloys complicate the application of any experimental stress analysis technique, and in the case of TSA, make these assumptions invalid.
This paper describes a detailed analysis conducted to characterise the material properties of NiTi shape memory alloys and to identify loading conditions suitable for quantitative stress analysis using TSA.
Obtaining functional thermoelastic measurements from Region 3 is made difficult by two main factors.

It is known that the mechanical and physical properties of the materials are affected by a number of factors, such as the volume fraction of biomass powders, dispersion level, biomass polymer matrix adhesion, mixing time and processing temperature [5].
Composite charactizations Mechanical Properties.
The mechanical properties of the wheat straw flour/polyethylene composites were estimated via tensile, flexural, and impact properties.
Mechanical Properties.
The Mechanical properties for different MAPE content are listed in Table 2.

Ti-based coating has been used for biomaterials to improve biocompatibility, mechanical and corrosion properties.
Each coating shows unique performance depending on a variety of factors such as coating microstructure and properties as well as in-service conditions.
Many factors such as the overheating of the target, arc spot travel, deposition rate, and bias voltage characteristic can affect the growth of defects due to the change in energy level of ions, which can affect adatom mobility and surface diffusion [14-16].
However, these voids and particles could affect surface coating properties such as flow resistance, crack initiation and propagation resistance.
Zhanga, Phase stability, chemical bonding and mechanical properties of titanium nitrides: a first-principles study, Phys.Chem.Chem.Phys.17(2015) 11763-11769

To help identify the share of heat which affects the workpiece, firstly the analysis of past research in the field of heat transfer during grinding was conducted.
Goal of this analytical dependence is to achieve more efficient production of mechanical parts without thermal defects in the surface layer of the part.
With effective management of heat development and distribution in the cutting zone, production of mechanical parts can be achieved without reduction of exploitation properties.
During this procedure almost all of the mechanical work is transformed through deformation, separation and friction into heat energy, Fig. 1.
Savkovic, Surface layer properties of the workpiece material in high performance grinding, Metalurgija, Vol. 51/1/2012, pp. 105-108