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Study on Mechanical Properties of AA6061/SiC/B4C Hybrid Nano Metal Matrix Composites Shubhajit Das1,a, M.
Reinforcements of nano size have been reported to improve mechanical properties, creep and wear resistance at higher temperature and improve fatigue life without affecting ductility [10].
In recent times, researchers have investigated the properties of ceramic particulate reinforced MMCs by varying factors like reinforcement composition (single/ hybrid reinforced), percentage content of reinforcement, microstructure.
Alaneme et. al., [16] studied the mechanical properties of Al/Mg/Si alloy.
[21] Ge D, Gu M, Mechanical properties of hybrid nano reinforced aluminium based composites.

However, there are great differences between physical and mechanical properties of composite sleeper that produced all over the world, which lead to the problem of searching rational parameters for composite sleeper.
The optimization problem for finding the optimum properties of the composite sleepers material is solved by the method of experimental statistical modeling (ESM-method) by carrying out a computational experiment on mathematical models of the properties (response functions) Y in RBSRR system from the variable factors X.
As variable factors X, the following indicators were adopted, related to the properties of the sleeper material: Х1 - bending coefficient of a sleeper, rel. units; Х2 - its mass, kg; Х3 - modulus of elasticity of a sleeper in a horizontal plane, MN/cm2; Х4 - the same in vertical, MN/cm2; Х5 - the same with respect to torsion of a rail, MN/rad; Х6 - rigidity of a fastener binding unit, MN/cm.
The levels of variation of factors X were determined on the basis of the operational experience of the railway tracks of Russia.
When minimizing the objective function (1), the weighting factors ai varied within the range of 0,05-0,20.

Wu [12] studied the deterioration characteristic of mechanical properties of concrete in the presence of stray current and chloride ion.
Results show that mechanical properties of concrete decrease more remarkable under the two factors coupling actions than single factor action, the deterioration degree depends on the voltage magnitude, chloride ion concentration and corrosive time.
According to the experimental results, he established the relationship between stray current and mechanical properties of concrete by regression analysis.
In recent years, many scholars have studied the effect of stray current and multi-factors coupling conditions on properties of concrete.
Inhibition of Stray Current Inhibition for Influence of Stray Current on Mechanical Properties of Concrete.

Microstructure and Mechanical Properties of Fe-containing Al-alloys Processed by a Rheo-diecasting Process X.
This work is to investigate the effect of intensive shear on the microstructure and mechanical properties of A380 alloy.
Mechanical properties were obtained from the measurement of 5 to 7 specimens.
Fig. 3 shows the effect of Fe content on the mechanical properties of A380 alloys produced by RDC and HPDC processes.
The β-AlFeSi intermetallic compound in the form of plates or needles is detrimental to mechanical properties, particularly to elongation.

In this work, the microestrutural characterization and mechanical properties of atomized Al-9Si-3Cu alloy powders and extruded samples are presented.
The mechanical properties of extruded samples were also characterized by tensile test and hardness measurements.
Mechanical properties results for extruded samples with powders of different size ranges.
by reduction of intermetallic compounds, especially b-Al5Fe2Si phase that exhibit high hardness and low deformability when localized in the interfaces of the particles preventing the connection and bonding among the powder particles, affecting considerably the mechanical properties.
Hatch: Aluminum: Properties and physical metallurgy, ASM, Metals Park, OH, 1984.

Among mechanical characteristics of materials, toughness is one of the effective factors in material performance during loading.
There are several studies on mechanical properties of fruit tissue which determined properties for unpeeled and peeled (flesh) tissues.
Main environmental factors were: temperature () and humidity (20-55%).
Emadi, et al., "Mechanical properties of pumpkin," International Journal of Food Properties, vol. 8, pp. 277-287, 2005
Emadi, et al., "Mechanical properties of pumpkin," International Journal of Food Properties, vol. 8, pp. 277-287, 2005

The solid-state joining process produces welds with improved mechanical properties and reduced distortion.
Higher Carbon Steels are extensively used in different industrial applications such as shipbuilding and automobile industries due to their superior mechanical properties.
Experimental Work Identification of Predominant Factors.
The main parameters are caused to the temperature effort and then affecting the tensile properties, Hardness property variations occur in all FW joints.
This sample experiment was conducted by keeping one of the factors is constant and the other factor is changeable.

This research is focused on the study of improvement on physical and mechanical properties of cement mixed clay.
Terashi summarized the various factors affecting strength of cemented clay into four general categories: characteristics of stabilizing agent; characteristics and condition of soils; mixing conditions; and curing conditions [10].
The general properties of soil used in this research before cement mixing are summarized in table (Table 1).
General properties of Kathmandu clay.
The trend in the variation of these properties is not linear as shown in figure (Fig. 2).

The process of ironing 3xxx series aluminum alloys, which is very sensitive to the properties of raw material, was repeatedly subjected to experiments aimed at testing the relevance of factors affecting the process, the use of new tools and others.
In [8] charge material to the manufacturing process of beverage cans and factors affecting the process of ironing were extensively analyzed.
Charge material (tapes) was taken from three different suppliers and tested for mechanical properties.
The designated mechanical properties for the three suppliers are presented in a table below.
Optimal plastic properties for ironing are determined by a lot of factors.

The main welding variables affecting the weld quality in HF-ERW are: I) Mechanical factors (edge formation): degree of ‘’V’’ opening, parallel edges through the ‘’V’ and relative position of edges II) Electrical factors: welding frequency, welding power, current, voltage and weld speed III) Squeeze force and upset amount ((the difference between pipe circumference before and after welding) IV) Welding temperature V).Properties of base material: weldability, chemical composition, structure [1], Base Material (BM) Heat Affected Zone Weld Fusion Line If these variables are well established and correct maintain, than shape of heat affected zone are clepsydra type with central ferrite band (fig 2).
Chemical composition and mechanical properties of used hot coil are shown in table 1.
The chemical composition in weight percentages as well mechanical properties of the hot coil used for manufacturing of the structural pipes.
Dimension of hot coil [mm x mm] The chemical composition, [%] Mechanical properties C Mn Si P S Ti V Nb Al CEV ReH, [MPa] Rm, [MPa] A, [%] 1500 x 5.8 0.073 0.513 0.014 0.012 0.011 0.001 0.001 0.017 0.04 0.166 430 495 33.8 1500 x 4.85 0.074 0.514 0.014 0.012 0.011 0.001 0.001 0.017 0.04 0.167 434 489 35 1220 x 7.8 0.076 0.536 0.018 0.011 0.01 0.001 0.001 0.012 0.04 0.171 446 528 29.01 1220 x 9.5 0.075 0.534 0.017 0.01 0.01 0.002 0.001 0.012 0.04 0.170 445 508 28.62 Each hot coil was split into strips corresponding to the diameter of the pipes in order to produce 193.7 mm OD pipes.
Dependence betwen welding temperature and flaring test Conclusion There are a number of interdependent factors affecting weld quality but the most influential are the welding temperature and upset amount.