Search results

The Effect of Cooling Rate on Structure, Basic Mechanical and Special Properties of Complex Alloyed Manganese Cast Iron M.G.
It is shown that the cooling rate (as well as the chemical composition of cast iron) is a determining factor in the primary microstructure formation that affects the properties of castings.
Obviously, the impact loads and the cooling rate should affect the properties and the qualitative share of the effect of elements on these properties.
Such a difference is insignificant, therefore, it does not, in fact, give any improved indicators of mechanical properties.
Thus, the conditions of a favorable crystallization rate become one of the key factors for a significant increase in the strength characteristics of the alloy.

On the other hand, soften and wet-chemical properties of mineral component are the internal factor causing the deformation.
These factors increase the difficulty of technology and the investment for road construction in mountainous area.
Strength and deformation properties of the filling are important factor affecting the stability of highway roadbed, and they are also significant parameters in highway design.
These are possible factors to affect rock strength.
Research on Effect Factors and CBR Character of Extremely Soft Rock in Cugeda.

The thermal energy that the arc provides melt the workpieces and the filler metal, thermally affecting the surrounding metal.
Grain size is one of the dominant factors that influence mechanical properties especially in solid-solution strengthened materials.
Welding process will change the structure and by consequence the mechanical properties of the metal.
It is obvious that FSW joints exhibit better mechanical properties than those obtained by TIG welding.
Silicon content affects the properties of the weld in the same way it affects the as cast metal properties, that is higher hardness values and lower tensile strength values in both cases.

The paper properties such as roughness, gloss, surface wettability and other factors have great influence on the dot reproduction attributes of presswork, and different paper factor has different effect weight on the dot reproduction.
The grey relational analysis is a multi-factor statistical analysis method, which is based on the sample data and the grey incidence of various factors and is used to describe the strength, size and the order of the relationship between the factors.
Grey relational analysis is a multi-factor statistical analysis method, which based on the sample data and the grey incidence of various factors and is used to describe the strength, size and the order of the relationship between the factors.
The correlation between all factors and sub-factors were constructed an incidence matrix, and the influence between different factors could be obtained by analyzing the matrix [4].
The penetration and diffusion of ink on paper surface was affected by the roughness and surface wettability of the paper, thereby led to the mechanical dot gain.

Survey of existing timber structures often includes the need to allocate mechanical properties to structural timber members.
During this stage a first allocation of mechanical properties to timber members is made.
Factors used in a preliminary survey to assess the reference properties of timber members on service Second stage – Detail survey of timbers Detail survey is carried out on critical areas identified by structural analysis performed after the preliminary survey.
These two last techniques are strongly affected by operation factors (e.g. wood moisture content, equipment and testing procedure).
Determination of characteristic values of mechanical properties and density

In addition, data was collected and statistical analyses were performed to assess the effects of environmental factors, such as temperature, on the static properties of the composite rods.
The study evaluated the morphology and mechanical properties of the composite rods [8-13].
The advantages and disadvantages of the mechanical properties of the composite rods are demonstrated in this study.
As a result, it is expected to derive design guidelines for structural factors for various applications.
Furthermore, the statistical analyses were performed to evaluate the effects of environmental factors, such as temperature, on the static properties of the rods.

So the main purpose of this paper is to understand the mechanical properties of electrode layer and find out the effect of temperature and the content of catalyst particles on the electrode yield stress.
During multiple cycles operation, with the change of temperature and humidity, the swelling of the membrane is the primary drive force and the main factor which affects the stress distribution through MEA [3].
Therefore, the mechanical properties of the electrode can affect damage propagation and migration in the MEA.
Conclusion The main purpose of this study is to get the mechanical properties of PEM fuel cell electrode and find out the effect of temperature as well as the content of catalyst particles.
Garboczi, Elastic properties of model random three-dimensional open-cell solids, J Mech Phys Solids, 50 (2002) 33-55

On the other hand, in addition to its reported instability [4], for highly nonlinear materials and temperature-dependent mechanical properties, the isothermal staggered procedure is avoided in favour of stronger coupling strategies.
The other material properties are presented in Table 1.
In the present work, the effects of the specimen initial temperature, To, are discussed for selected temperature sensitivity factors, ¶s/¶T.
Parameter Value Elastic properties E 200 [GPa] n 0.3 Dissipation x 0.85 Yield stress s0 608.21 [MPa] e0 0.006326 n 0.1179 ¶s/¶T 0 |¶s/¶T| 3 [MPa/K] T* 300 [K] Damage properties r 2.6 [MPa] s 1.0 h+ 0.80 h– 0.001 Thermal properties r 7800 [kg/m3] cp 483.3 [kJ/kg K] k 36 [W/mK] Initial temperature To 300, 400 and 500 K Effect of the coupling strategy: The simulations have shown that the coupling strategy has not imposed a significant effect on the mechanical behaviour when the classical von Mises material model (no damage) was used.
Figure 2(b) highlights the effects of the coupling strategy for sensitivity factors ¶s/¶T = 0.0, -1.5 and -3.0 MPa/K for a specimen initial temperature To = 400 K.

Effect of Laser Shock Peening on Surface Residual Stress and Plastically Affected Depth of TC11 Titanium Alloy Ran Zhu1,a, Yongkang Zhang2, Guifang Sun1,b*, Pu Li1 1School of Mechanical Engineering, Southeast University, Nanjing, Jiangsu 211189, P.R.
LSP can improve metallic material properties, such as resistance of fatigue[3], corrosion [4]and wear[5].
The material property parameters required for FEM simulation are tabulated in Table 1[14].
Mechanical properties of TC11 titanium alloy[14].
Consequently, the LSP path can be considered as a non-negligible factor to the surface residual stress and plastically affected depth.

Factors that affected the properties of the support material were analyzed.
It is often required that the support should have high properties, such as high porosity, proper pore-size distribution, high mechanical intensity and so on.
In this study, the high-quality support was fabricated and the factors that affect greatly properties of the support were studied.
The binder additions have a great effect on the micro-pore and mechanical properties of the support material.
(5) The firing temperature is an important factor that affects the properties of the support material.