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Introduction During the last decade, nanostructured materials proved to exhibit superior mechanical properties and chemical stability.
Meletis, Mechanical and tribological properties of TiN/Ti multilayer coating, Surf Coat Tech, 205 (2010) 146–151
Meletis, Mechanical and tribological properties of nanocomposite TiSiN coatings, Surf Coat Tech, 204 (2010) 2123–2129
Meletis, Study of the structural and mechanical properties of nanocrystalline TiAlSiN gradient coatings, J Nano Res, 27 (2014) 15-24
Wang, Mechanical properties of gradient and multilayered TiAlSiN hard coatings, Thin Solid Films, 517 (2009) 4934–4937

Wu 1,c 1 School of Mechanical Engineering, Nantong University, Jiangsu, Nantong 226019, P.R.
Jean[6-7] by using ray tracing (ray tracing) and the boundary element method to study the acoustic properties of a T sound barrier model, the barrier top is 0.185m x 0.125m thick cement particle board.
By category, change the sound absorption material structure and thickness, analysis the influence factors of top structure, optimize the structure of the sound barrier top, provides the important basis for the design of high efficiency barriers.
A comprehensive analysis of the above factors, the noise reduction performance, can have a better season climate conditions in the whole stiffness and stability, and the insertion loss performance experiment.
Experimental study on acoustic properties of a new type of noise barrier.

Abstract.The yield strength of liner material affecting the performance of CNG-II composite cylinder was studied by finite element method (FEM) analysis.
Fig.1 Model Geometrical Dimension Material Properties The mechanical parameters of liner and fiber are shown in table 1 and table 2.
The Influence of Liner Yield Strength on Fatigue Life The stress amplitude of liner is the uppermost factor that affects the fatigue life of CNG-II composite cylinder.
In addition, the high-strength property of winding layer fiber could not been fully utilized as the yield strength of liner increasing.
The Application of ANSYS in mechanical and chemical equipments[M].

Numerical Analysis of Rain-Wind Induced Vibration on Conductor by Finite Element Method Zhou chaoa, Liu Yan-pingb North china electric power university, school of energy power and mechanical engineering, Beijing, 102206 azhouchao@ncep.edu.cn, blyp@ncepu.edu.cn Keywords: Rain-wind induced vibration, Finite element method, Ionic wind, Corona discharge.
The ionic wind coupling with wind force induced vibration of the cable, which seriously affected the cable's normal operation of transmission and stability.
Take LGJ-240 as an instance, using experimental and numerical analysis to analyze the impact on amplitude of cable by the air humidity and density, conductor surface conditions, cable structure factors and tensions.
In order to facilitate analysis, we assume that the cable have the same geometry and material properties along with direction of length, and ignore bending stiffness.
The results show that, the role of corona discharge affected on vibration is remarkable.

Graphene quantum dots (GQDs) have unique optical properties and excellent electronic conductivity.
The photoabsorption of active layer, effective dissociation of excitons, and the transport and collection of free carriers are significant factors affecting the efficiency of PSCs.
Good PSCs are also attributed to the increasing absorption of light by interface design and construction without increasing the thickness of active layer and affecting charge collection.
Graphene has been proposed for many applications in recent years, due to its flexible two-dimensional structure and exceptional physical and chemical properties. [3, 4] Much attention is focused on its application in the field of PSCs because of the excellent electronic, optical, thermal, and mechanical properties of graphene.
Results and Discussion PL properties of the RGO solution and GQDs: Figure 1 shows PL spectra of RGO and GQDs, well dispersed in chlorobenzene solvent.

These important dominant factors affected organizational decisions.
Because of the intrinsic properties, H.Maslom's needing hierarchy theory indicated that social needs could be explained as the force of social operation [3].
So the environment is often defined as variety of factors which can affect the performance of the competition.
Supposing there are 6 items which are key driving forces affecting enterprise development.
The Driving Force Analysis Method of Implementing The Monitoring of The Competitive Environment Ascertain the Driving Force Factors To make driving force analysis, we should first ascertain the driving force factors which affect the company’s survival and development.

However, in practical analysis, the convergence criterion is often affected by many factors, such as the element quality, the convergence criteria as well as the computation condition.
Wavelet method is endowed with the multiscale property, and it could extract the local property of studied signal or function.
According to this property, the singularity point in the curve can be figured out as well as the precursor load.
In this way the wavelet approach is validated. 2.69 2.95 Fig.3 The equivalent plastic strain of dam body under loading factor () Using the catastrophe method [10] and the finite difference method [11], the failure curve is also studied, and the corresponding precursor loading factors are 3.0 and 2.90 respectively.
Proceedings of the 6th Jiangsu-HongKong Mechanical Forum (Nanjing, China, October 23-24, 2010)

CBR Test There are many factors affecting the bearing ratio.
The final result is the structural framework of soil becomes loose, expressed as obvious decrease of soil strength on mechanical property.
The internal factors affecting the soil expansion and deformation are mainly: clay minerals and their chemical composition, clay particle content, void ratio, water content, microstructure and structural strength of soil, etc[9-10].
Analysis on Effect Factors of CBR of Gravel-Bearing Sandstone(in Chinese) [J].
Test and analysis of factors affecting CBR value of fine grained soil(in Chinese) [J].

Several properties of these materials should be compared and the material with best properties required for the usage should be selected.
Generally, mechanical properties of a composite material show anisotropic characteristics.
The magnitudes of properties also show different values from those of reinforcing fiber or resin, and are affected by various factors such as fiber volume fraction, type and orientation of reinforcement fibers, etc.
Thus in order to properly perform structural analyses of a composite material, careful considerations of mechanical properties are essential.
This study utilizes mechanical property data provided by Dupont.

A significant factor is the dilatation of sand grains.
Sands from related deposits may differ in their properties contrary to expectations, and understanding their behavior can be crucial for a specific application.
The aim of this experiment is to define the differences in properties of silica sands from two mining locations situated close to each other.
It is generally assumed that they are from the same deposit of silica sand, and therefore, the extracted sands should exhibit similar quality and properties.
Zheng, Evaluation of Microstructural and Mechanical Properties of Silica-Enriched Oil Well Cement Pastes in Steam Injection Wells, Available at SSRN 4048736