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It was found that sintering temperature affected hardness property of the SFMs.
Employing prealloyed Cu-Sn powders provided SFMs with better mechanical properties compared to the SFMs made of admixed Cu and Sn powders.
Properties of the first and second SFMs groups were compared.
Wear rates may depend on factors, such as material soundness, base material or matrix integrity and material surface condition.
Improved mechanical, physical and tribological properties could be found in the the SFMs Series CS, which were produced via admixing of prealloyed Cu-Sn powders with other ingredients.

The mechanical properties under different process conditions were analyzed; also the influence of the three factors on the results was analyzed.
Range reflects the influence of factors.
Mould temperature also has a more obvious influence on the mechanical properties of specimens.
After analyzed the variance of orthogonal data and test the significance, table5, we can see that the factors affecting the tensile strength and yield strength are the injection rate, the factors affecting the elongation rate is the preheating temperature of the mould, and the optimum technological parameters are: Injection speed is 0.5m/s, injection pressure is 50Mpa and mould temperature is 240℃ Table 4 Mechanical properties under different process conditions Mechanical propeties Values Injection speed( m/s) Injection pressure(MPa) Mould preheating temperature (℃) Ultimate tensile strength Average value 1 311.667 292.667 290.667 Average value 2 300.000 302.000 306.667 Average value 3 286.333 303.667 305.667 Range value 25.334 12.334 15.000 Yield strength Average value 1 235.667 227.333 228.667 Average value 2 232.333 231.333 232.000 Average value 3 227.667 237.000 235.000 Range value 8.000 9.667 5.333 Elongation rate Average value 1 11.330 10.067 9.167 Average value 2 10.467 11.033
Microstructure and mechanical properties of squeeze cast and semi-solid cast Mg–Al alloys [J].

The losses of the operating fluid under pressure are one of the factors which affect overall performance of the machines.
Some factors that affect the sealing properties of the joint are the material of the gasket, the shape of the gasket and the clamped flanges but also the stiffness of the whole assembly.
In the following text we are going to show what other factors can affect the problematic area of the joint.
There is also another factor affecting the pretension force and that is the surface finish of the flange under the bolt head.
Considering more variables could show us the worst case affecting the sealing properties of bolted joint.

Due to occurrence of such elements as Fe, Cu, Mg, Mn in these alloys, the intermetallic phases crystallize additionally, affecting on the mechanical properties of the castings.
In the Al-Si-Cu alloys, the presence of copper also results in formation of the intermetallic phases (Al2Cu, Al5Mg8Cu2Si6) affecting on the mechanical properties, particularly on reduction of plastic properties [1].
However, it can be observed that the porosity affects on the reduction of the mechanical properties to a greater degree.
It should be reminded that in the mechanical properties sample this participation was practically impossible to identify.
Zajmovskij: Structure and mechanical properties of metals (in Polish) (WNT, Poland, 1973) [13] H.M.

This segregation affects the microstructure and final properties of ADI.
The qualitative and quantitative assessment of phase composition is extremely important for the analysis of the influence of technological factors (eg chemical composition) on the structure and properties of ADI cast iron.
Tensile and impact properties The effect of alloying ADI with Cu, Ni and Cu+Ni on the mechanical properties is illustrated in Fig. 3.
In conclusion, it can be stated that ADI with copper is characterized by good static mechanical properties but at the same time reduced dynamic properties. 4.
The exhibited mechanical properties of ADI depend on Cu and Ni additions and variable austempering periods of time.

Experimental research on thermal and mechanical properties of modified rammed earth material Shuting Du1, a, Jinzhu Ma1,b , Dong Wang2,c 1School of civil engineering, Institute of urban environment and ecological building， xuchang university, Xuchang, China 2 School of mechanics & civil engineering, china university of mining and technology, xuzhou, China adst_xiao@163.com, bmajinzhu2000@163.com,c wangziyi_03 @163.com Keywords: experimental research;  rammed earth material; thermal properties; mechanical properties Abstract.
Taking the mix proportion of rammed earth dwellings in Anji as the basic standard, the physical properties, thermal properties, mechanical properties of rammed earth in various mix proportion have been tested by means of experiments.
Physical properties test Test material.
Taking the mix proportion of rammed earth dwellings in Anji as the basic standard, the physical properties, thermal properties, mechanical properties of rammed earth in various mix proportion have been tested by means of experiments.
In addition, the strength of rammed earth is affected by various factors, the maximum dry density and optimum moisture content of mixed rammed earth may be rapidly tested according to the site conditions, through the test data the moisture content will be controlled and the appropriate additive content was determined in order to provide a strong basis for rammed earth building construction[2].

Welded joint is inhomogeneous and composed of seam zone, heat affected zone (HAZ) and base zone, and the whole strength of welded joint is related to the mechanical matching between base metal and seam metal [1].
Heterogeneity of welded joint results from the variation behaviors of geometry shape, forced state, microstructure, mechanical properties and thermophysical properties caused by the welding heat action of the local transition zone between the seam metal and base metal [2,3].
Mechanical Model The mechanical model of the welded joint is shown in Fig. 1, the crack is transverse in the center position along the interface of seam zone and heat affected zone II and the half length of the crack a=0.005m.
HL RL2 Base zone I Heat affected zone I Seam zone ML1 ML2 Base zone II ML1 Heat affected zone II RL1 Fig. 1 Mechanical model of inhomogeneous welded joint Because of the symmetry of the model, a half of the model is used and symmetry constraint is imposed on the symmetrical line.
The influence of changes of Poisson's ratio on stress intensity factors is not obvious, so Poisson's ratio is 0.3.

Analysis of Parameters Sensitivity to Mechanical Properties of Large Section Tunnel in Soil Sheng LIU1,a, Tong LIU 2,b, , Bangzhe LIU2, Zichao DONG2 1School of Science, Chang’an University,Xi’an,710064,P.R.China 2School of Science, Xi’an University of architecture and Technology,Xi’an,710055,P.R.China a86128875@163.com b87596240@163.com Key words: Tunnel in soil; Sensitivity Analysis; FEM; Orthogonal numerical test Abstract: In order to analyze the mechanical properties parameters sensitivity of large section soil tunnel, this paper designs numerical test program of the degree of influence on mechanical properties by the change of physical and mechanical quantities based on the orthogonal experiment design.
In this paper, some treatment combination with strong representativeness chosen through orthogonal table is test to analyze the main factors of mechanical properties of large section tunnel.
The factors making an impact on numerical test observation indexes are known as test factors, and select the wall rock elastic modulus E, Poisson's ratio μ, cohesion С, internal friction angle φ as test factors.
Assuming factors are independent of each other by not taking the potential interaction between various factors into account.
Ap /m2 S1 /MPa Sy /MPa 1 14.92 2.74 10.37 2 5.61 2.35 12.48 3 2.42 2.57 11.15 4 3.35 1.89 11.91 5 1.81 2.67 10.83 6 8.37 1.81 9.78 7 0.15 1.56 10.57 8 7.46 1.72 9.72 9 3.67 1.68 8.75 Physical and mechanical parameters of wall rock are the internal factors affecting the stability of tunnel cavern.

The uniformity of the fiber dispersion is also the important factors affecting the compressive strength.
However, factors that affect the uniformity of the fiber dispersion are fiber length, fiber content and fiber surface roughness.
The whole structure became uniform, so the mechanical properties increased.
With the increase of fiber content, the whole structure became uniform, so the mechanical properties increased.
(3) The uniformity of the fiber dispersion is also the important factors affecting the mechanical properties of the cement-based.

In this paper, the important characteristics of fibrous and isometric particles affecting the final properties of hardened composites are discussed.
The natural fibres properties depend on several factors, including fibre source and type, chemical composition, structure, fibrous aggregate shape and dimensions (length, width), cell dimensions, microfibrillar angle, surface, physical and mechanical parameters.
This article gives a review of the results of research aimed at studying the influence of key factors of fibrous and isometric particles on the final properties of hardened biocomposites with inorganic matrix.
Based on literature data as well as on our previous research, the key factors influencing properties of biocomposites based on hemp hurds are content of fibrous material [28], particle size of used fibres [29, 30], pre-treatment method [9, 31] and binder nature [21, 32].
Chotard, Mechanical properties of hemp-lime reinforced mortars: influence of the chemical treatments of fibers, J.