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However, in the majority of cases, a loss in mechanical properties like tensile strength and tenacity is observed.
Composites with modified kaolinite organoclay showed the significant improvement of the tensile properties.
This result reflected that the tensile properties of NR/unmodified clay slightly increased with unmodified clay contents.
Thus, these reason may be improved the mechanical and physical properties of the NR composite.
This morphology gives rise to a sensible increase in physical and mechanical properties of the composites.

From Fig. 1 to Fig. 3, it can be seen: 1) From the affecting depth of compaction point of view, the larger energy level, the deeper affecting depth.
It is apparent from Table 3 that the SPT counts were significantly increased in a certain sphere of influence, which directly reflects affecting depth.
For 8000kN.m energy, the affecting depth is 15.0m. the counts of SPT of zone A1 were significantly greater than zone A2, which indicates that the spacing of 2D is better than 2.5D; The affecting depth of 6500kN.m is about 12.0m, but the counts of SPT of zone B2 were significantly less than zone B1, indicating 7m2 area at this depth is not good as 5m2 area, but in the upper of the subsoil 7m2 is greater than 5m2 area; For 3000kN.m level, the affecting depth is only about 7m.
The tamping energy, spacing, hammering times, all the factors have great influence to the thickness of eliminating collapsibility.
Thickness of eliminating collapsibility depends on energy level, tamping spacing, hammering frequency, engineering properties of soil and other factors.

The present work includes an investigation of the effect of α-alumina nanoparticles addition to aluminum-based nanocomposites on its mechanical properties and finding the optimal value of alumina nanoparticles that give the best properties.
Mechanical properties were tested.
Genetic Algorithm Optimization was applied to find the optimum value of alumina nanoparticles weight percentage which gives good mechanical properties.
Daneshmand, “Effect of nano Al2O3 particles on the mechanical and wear properties of Al/Al2O3 composites manufactured via ARB,” Rev.
Kori, “Preparation of 6061Al-Al 2 O 3 MMC’s by Stir Casting and Evaluation of Mechanical and Wear Properties,” Procedia Mater.

The influence of the mechanical properties of corrugating media on those of the corrugated paperboards and boxes has been investigated experimentally and the elastic modulus was obtained [2-3].
The main factors and free-terms of the equation are derived using MATHEMATICA. ;;; ;.
Size Two. , The curvilinear equation of the core paper: The main factors and free-terms of the equation are derived. ;;; ;.
Conclusions This study aims to develop a new formula calculating equivalent elastic modulus with force method to better evaluate the flat compression properties of corrugated paperboard.
Wang: Mechanical Properties of Composites Sandwich Structures (Ph.D., Harbin Institute of Technology, China 2010), pp. 17-18.

Optimization of torsional dynamic properties of hydraulic excavator slewing transmission mechanism Zhaojun Li1, a, Yuling Zhang1, b , Tao Mao1, c , Xujuan Yang1, d 1 College of Mechanical Engineering, Guangxi University, Nanning, 530004, China aglenlzj@126.com, bzhangyuling241@126.com, c506341572@qq.com, dyxj13@163.com Keywords: Hydraulic Excavator, Slewing Transmission Mechanism, Dynamic Property, Optimization Abstract.
The optimization problem of the planetary transmission mechanism have been studied by many scholars[3-5], but the various factors affecting the slewing transmission mechanism are not fully considered, especially the effects of the structure parameters and positional parameters of the hydraulic excavator on the dynamic performance of the planetary gear transmission of slewing transmission mechanism, so it is necessary to have a deepgoing analysis and research to that type of problem.
And when is smaller, the stability and the torsional dynamic properties of slewing transmission mechanism are better.
So the torsional dynamic properties of slewing transmission mechanism can be improved by optimizing .
Journal of Mechanical Transmission, 2007, 31(5): 51-52.

With the rapid development of modern industry, mold as a basic hardware facility has become one of the important factors affecting the development of modern industry.
Its main advantage is to reduce the heat affected zone area of the weld zone by high-energy low-heat process.
The suitable material is coated on the surface of the failed mold to improve the surface properties such as wear resistance, hardness, strength and surface quality of the substrate.
Therefore, the addition of strengthening elements in an appropriate amount can effectively improve the surface properties of the repair mold.
Carry out a post-treatment test study on the repair of the cladding layer to improve the mechanical properties of the working surface of the repairing mold.

The phase ratio determines the mechanical properties and corrosion resistance of duplex stainless steel joint.
The chemical composition and mechanical properties of the materials are shown in Tab1 and Tab2.
Results of Mechanical Properties Test.
This shows that to A240-S32205, GTAW joint has better mechanical properties than SMAW joint with acid electrode.
Conclusions (1) Compared to SMAW with acid electrode, GTAW can obtain better mechanical properties in joint

For multilayer welding, welding droplet overlapping is an important factor affecting the dilution rate and the surfacing layer thickness.
The main advantages of surfacing technology are low cost, but there are welding defects with poor ductility, so its mechanical properties should be improved.
(4) With good mechanical properties, interlayer achieves metallurgical bonding.
At the same time, the microstructure and properties of the material is uniform, higher than that the traditional casting and forging parts.
The forging load change and not the same style of surfacing welding samples, the basic affecting factors are the same.

Natural enamel has good mechanical properties and high abrasion resistance, their physical properties and physiological function are related to its unique structural composition and morphology[2].
As the anisotropic properties of the enamel and dentin, their mechanical properties withstanding the external load was various [11].
Mechanical properties of tooth structure are sensitive parameters of microscopic structure [10].
These factors increase the ability of cariogenic bacteria to enter dentinal tubules and the opportunity of dental pulp to necrosis.
Mechanical properties of human dental enamel on the nanometer scale[J].

The SEM showed how extrusion process affected the homogeneity of composites structure.
Significant deterioration in the mechanical properties of polyolefin is observed after two weeks of accelerated ageing at increased temperature, and for engineering polymers after a month [3].
Accelerated ageing method does not give the real picture of change (unknown factor of shorten the experiment time), such as ageing by weathering properties, therefore, must assume a large margin of error, but it is well suited for comparative studies of different types of materials [4].
Influence to changing climatic conditions on the chemical properties of the composites was investigated.
Akcelrud, The effect of accelerated ageing on the surface mechanical properties of polyethylene.