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Primary factors have a direct effect on the fretting process, whereas the secondary factors are only indirectly linked to the primary factors.
Table 1 gives the elastic properties of these materials.
Materials Properties.
Fatigue properties for 2014-T6/651 Aluminum alloy [11].
This research has found two factors to be responsible.

Hand held mechanical tools and awkward posture are low back pain risk factors [9].
In a farm the most important sources of mechanical vibrations are the electro-mechanical tools.
Its mechanical properties can be easily modified so frequent exposure to HAV or WBV can lead to permanent health effects.
Spine disorders can be the results of vibration exposures combined with other factors.
Gharpuray, Can variations in intervertebral disc height affect the mechanical function of the disc?

Introduction The sapphire substrate is in the lighting industry in the most widely used LED substrate material, having excellent optical properties, mechanical properties and stable chemical properties [1,2], its precision machining technology, which mainly includes: slicing, grinding or grinding, chemical mechanical polishing, cleaning process.
As a result of slice method in wire cutting, it has the advantages of high efficiency, high yield, no pollution and other advantages[3], and it replaced the traditional inner circular slice method, but the line cutting on substrate surface caused by corrugated ( roughness) [4,5], therefore it must be manufactured after line cutting process in removal of surface wave lines, otherwise it will seriously affect the quality of the surface of a substrate.
Grinding wheel is resin-bonded grinding wheel, the size is 150mm × 20mm × 60mm, the abrasive particle size is W28. 2.2 Grinding process parameters In order to reduce the impact of factors unrelated to the grinding experimental results, the two grinding way are using the same process parameters, the only difference is the traditional grinding and HNBR industry rubber pad grinding, rubber pad is located between ceramic support blocks and substrate, rubber pad has been open small holes, through the holes in the substrate under pressure to vacuum adsorption rubber pad surface. 2.3 Grinding experiment results We detect the traditional grinding and the cushion grinding(Adding a rubber pad between the substrate and the worktable ) by optical microscope, observing the surface morphology, Shown in figure 5,among of them , the substrate’s surface morphology of the traditional grinding.

Corrosion Resistance and Adhesion Properties of Electrophoretic Deposited Nano TiN Powder Sanaz Sattarnezhad Golchin1,a, Hossein Aghajani2,b * 1Department of Materials Engineering, University of Tabriz, Tabriz, Iran. 2School of Metallurgy and Materials Engineering, Iran University of Science and Technology, Tehran, Iran.
Thus the surface properties of these alloys may be improved by various surface modification techniques [1-3].
The key factors affecting the EPD process are particle size, zeta potential (stability) and electrical conductivity of dispersant [16-23].
Conclusions This study shows the corrosion resistance and adhesion properties of EPD process at room temperature for a possible process for preparing of uniformly and adherent TiN coating on 430 stainless steel using PEI and isopropyl alcohol
K., Bhat, A., Bose, S., and Bandyopadhyay, A., Journal of the mechanical behavior of biomedical materials, 6 (2012), 9-20

Elastomers are crosslinked polymer chains that have elastic properties and liquid crystals are mesogenic materials that have orientational order properties, so LCE have combination properties of both substances [1-5].
If the deformation factors associated with the order parameter of the components of swollen LCE, and, and the volume fraction of LCE,, then the elastic free energy can be expressed by: where and .
Teraoka, Polymer Solutions: An Introduction to Physical Properties, John Wiley & Sons, Inc., Pub, New York, 2002
Mark, Physical Properties of Polymers Handbook 2nd Edition, Springer Science + Business Media LLC, New York, 2007
Shmeliova, Liquid Crystals : Viscous and Elastic Properties, WILEY-VCH Verlag GmbH & Co, Weinheim, 2009

Here ways of the control of properties of heterogeneous sol-gel systems to reach set electro-physical and mechanical characteristics of coatings are considered in details.
However properties of coatings depend appreciably on their synthesis and formation conditions.
The last is connected with more hydrophobic properties of a three-beam oligomer core.
As a result of it both electrophysical properties and elasticity of coatings has improved.
Coatings on a surface of powders can be extremely useful giving to powders necessary properties – magnetic, luminescent, increasing mechanical strength or lowering temperature of fusion.

Introduction Carbon nanotubes (CNTs) are ideal material for a wide range of applications due to their unique electronic, mechanical and thermal properties [1].
Most of these theoretical and computational studies have shown that the interfacial thermal resistance is one of the critical factors in the heat conduction process.
As reported in literature [20], the k of a composite material is affected through the depolarization factor (Df).
The properties of the raw materials are listed in Table 1.
The properties of MWCNT and epoxy.

Finite Element Analysis and Comparison of Screw Pump Models in Uniform Pressure Youjun Zhang, Chenchang Zhang Shenyang University of Technology, Shenyang, China zhangyj@sut.edu.cn Keywords: strew pump, stator, three-dimensional model, finite element, mechanical properties Abstract. 
Its stator bushing uses the rubber material, not only making itself the wearing parts, but its coordination with the rotor screw directly affecting the working performance and determining the life and efficiency of the pump.
Considering the factors above, in the finite element analysis the results of three-dimensional model and the two-dimensional model have huge deviation.
Mechanical Engineering，2004,40(5):189~193

However, preferable mechanical properties are in sore need to achieve better adaption to harsh environment and widen the usage of the material.
In order to further up the mechanical properties of the final product, SiCw was added as reinforcement and the strengthening mechanism was investigated.
Some of the important high-temperature properties are analyzed in the following parts.
The superiority of reinforcement in mechanical properties pulls up the average appearance, so as to enhance the composite material [10].
High-temperature properties of porous SiCw/SiC ceramics.

From the last few decades comprehensive studies were carried out to investigate both the in-plane and out-of-plane crushing properties of different honeycombs.
Most of the studies found in the literature discussed the deformation mechanism and the key factors that influenced the crushing strength and energy absorption of honeycombs under compression loads.
Cell wall thickness to edge length ratio and strain rate were recognized as the key parameters that play important roles on the mechanical properties of honeycombs.
The detailed material properties used in the FE model for aluminum honeycomb and rigid bodies are listed in Table 1.
Ashby, Cellular solids: Structure and Properties, second ed., Cambridge, UK: Cambridge University Press, 1997