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Introduction Static tensile test is basic method that is used to evaluate the mechanical properties of many construction materials.
Factors affecting the tensile properties in case of polymer composites are various, such as the nature of matrix and filler, compatibility between them, technology and conditions of materials processing, the dispersion or distribution of filler/fibers in matrix, as well as interfacial structure and morphology, etc. [2-5].
The results obtained in the study confirmed variation of mechanical properties for various coating materials depend on their chemical composition.
It was confirmed in testing of mechanical properties of EP-1 after conditioning at 80oC.
Roylance, Mechanical properties of materials, MIT 2008 [2] J.

However, the study result largely depends on the factors considered during the building of the model.
According to the analysis of tribological systems, friction and wear characteristic of friction system depends on many factors, which compose the system.
The environmental media affected solid, lubricant oil, process on the solid surface, determines tribological properties of the system.
The determination of major effecting factors of friction system.
It can be seen from Fig.2 that there are a number of factors that can affect on the friction systems.

Introduction Austenitic stainless steels have become a new type of biomedical material in virtue of their special properties of being non-magnetic, corrosion resistant, easy to shape, and of good mechanical properties [1-4].
The result shows that deformation temperature is another significant factor affecting strain-induced martensite behavior.
Microstructure and mechanical properties of bainitic low carbon high strength plate steels.
Study of the effect of grain size on the dynamic mechanical properties of microalloyed steels.
Enhanced Mechanical Properties through Reversion in Metastable Austenitic Stainless Steels. 40 (2009) 729

The correlation between mechanical strengths and physical properties of NPs has been established.
Mechanical properties of mortars and physical properties of NPs.
Physical properties of Natural Pozzolans.
Properties of fresh mortars.
However, it is clean that additional factors including the type of natural pozzolan, composition and strength of cement and w/b ratio may also be effective on the mechanical properties of mortar.

Although poor design is one of important factors, pre-existing cracks or defects in the original material are predominant reasons for the catastrophic failure of these large and heavy equipments.
Stress concentration is an important factor affecting the brittle fracture of steel structure.
Therefore, the crack tip stress state is very important for the fracture properties of components.
Int J Numer Meth Eng, 1999; 46: 131-150 [4] Yuwen Dong, Tiantang Yu, Qingwen Ren, Extended finite element method for direct evaluation of strength intensity factors.
GB/T 21143-2007 (2007) [7] Mechanical Engineering Materials Manual.

It has good mechanical properties, corrosion resistance, excellent casting properties, at the same time casting performance is good, and it is suitable for aircraft, ships and cars on some of the high demand of complicated castings[4].
The TiB2 particle aggregation and coarsening effect will make it lose nucleation function, therefore, the union of TiB2 particles is a key factor affecting the material properties[10].
Mechanical Properties of Composites.
Tensile mechanical properties of A356 alloy and composite TiB2/A356 are shown in Table 2.
Technological Study onA356 Alloy Mechanical Properties[J].Hunan Nonferrous Metals, 2004, 20(1): 23-25

Therefore the performance is determined by the welding properties.
The welding time, temperature and induced pressure are important factors affecting welding property.
In package, soldering is one of the significant factors for package performance.
Temperature and pressure are significant parameters affecting performance.
Temperature identifies the properties of solder balls melting and reflowing.

The study of the properties and function of Large ball mill with liner material Jingpei Xie 1,b,Ningbo Li 1,2,a, Wenyan Wang 1,2,a, Aiqin Wang1,2,a,Pei Zhang1,a 1The School of Mater.
Henan University of Science and Technology, Luoyang, 471003,China; 2Henan Key Laboratory of Advanced Non-ferrous Metals, Luoyang 471003, China aningbo721403@163.com, bxiejp@mail.haust.edu.cn Keywords: Cr-Mo steel, heat treatment, mechanical properties, wear resistance Abstract：In this paper, based on ctual large-scale ball mill liners working conditions, effects of different quenching temperature and tempering temperature on the Cr-Mo steel performance, optimize the best heat treatment process.The use of sophisticated electronic universal tensile testing machine, and Rockwell hardness testing machine for testing mechanical properties of steel materials were tested; Using the MMS-1G-type high-temperature high-speed Friction and wear tester, the wear properties of steel samples were studied using JSM-5610LV scanning electron microscope study of the tensile test fracture surfaces of steel and the friction and wear morphology.
In this experiment, the Cr-Mo alloy steel is heat-resistant steel, the development of new materials as Cr-Mo steel than conventional high carbon content, to improve their mechanical properties better the content and methods of experimental Experiments with Cr-Mo low alloy carbon steel is in its composition (wt%) is: 0.65 ~ 0.75C, 0.30 ~ 0.65Si, 0.55 ~ 1.00Mn, 1.80 ~ 2.50Cr, 0.25 ~ 0.30Mo and the margin of the Fe , S, P content , less than 0.03. the process of the experimental steel quenched and tempered heat treatment operates in the model for the SX-4-12 box-type high-temperature resistance furnace.
Table 2-1 The experiment steel mechanical properties test results contrast Sample Number Yield strength（MPa） hardness（HRC） Tensile strength（MPa） Elongation rate（%） Contraction of area（%） A 1200 34.5 1300 5.5 6.0 B 1210 37.0 1310 3.0 3.0 C 1120 36 1220 7.0 9.5 D 1180 36.5 1280 4.5 4.5 Analysis of the Tensile fracture It can be drawn from Figure 3-2, a), b), d) ,all intergranular brittle fracture, c), subject to cleavage a) ,for the sample quenched after 870 ˚C 600 ˚C tempered form of tensile fracture appearance, the hard particles within the fracture from the crystal, a kind of ray florets and dimple pattern with torn edges and river, the river is short and curved pattern, a small tributary, cleavage plane is small, and more tears around the edges , they spread around from the source, not continuous, local extension, quasi-cleavage facet phase is not strictly correspond with the cleavage plane, to a certain extent, One square block of TiN particles suspension affects their strength.
Controlling of friction and component wear as a competitive factor[J].

Because the nonlinear mechanical properties of rubber materials, traditional experimental methods are difficult to analyze the value of contact stress and strain quantitatively.
In this paper, the U-ring rubber reciprocating seal structure of 300MN forging dies hydraulic press was taken as research object, the 3-D nonlinear contact dynamics simulation of U-ring reciprocating seal structure were realized by ANSYS/LS-DYNA finite element software, the contact characteristics, affect factors and failure mechanism of U-ring seal under high pressure medium has been systematically studied. 1.
The size of contact force was affected by many factors such as working medium pressure, hydraulic impact, preload and horizontal force of valve stem.
The friction force affected by the positive pressure, the friction coefficient of contact surface, lubricate conditions and other factors, hereinto, In these factors, the contact pressure and lubrication conditions were constantly change.
When the valve stem being reciprocating movement, the seal character affected by the contact stress, stem velocity, medium pressure, friction coefficient, stem vibration and other factors.

In general, polymer degradation is influenced by many factors (such as enzymes, environmental factors, crystallinity, temperature, pH, shape, and humidity) [5, 14].
The physical appearance and mechanical properties were investigated.
The mechanical properties and appearance of the samples before and after the landfill burial test was compared by mechanical testing and photos taken.
The rate of the bulk degradation mechanism influences by several factors such as humidity, pH of the environment, crystallinity, cross-linking and morphological properties [1, 22].
The mechanical properties of the PLA decreased faster than PBS polymer (after two and four weeks).