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The effects of nitrogen doping on coating morphology, physical properties, and FA degradation rates were experimentally determined.
Dopants affect the UV–vis spectra by inhibiting recombination of electron–hole pairs, here especially for the N–doped specimens.
This form Ti–O–N linkages, reducing the band gap energy beneficially for the photocatalytic properties of 40N/SnO2/TiO2 films.
According to prior reports, various factors affect the photoactivity of TiO2 photocatalysts, including crystallinity, grain size, specific surface area, surface morphology and surface state (surface OH radicals), and these factors are not independent but closely related to each other [6].
Nitrogen doping of SnO2/TiO2 composite films affect surface smoothness, crystallite size, and band gap energy of the films.

Introduction The microscopic composition of the structural material will change with time change during service due to the harsh environment of various unfavorable factors [1].
Currently, based on the dynamic properties of structural damage identification method, for its quick and simple practical, has become the focus of attention of international academic and engineering [2].
These affected based on the modal type of identification method [3].
Recognition of progress based on the dynamic properties of structural damage.
Mechanical Systems and Signal Processing, Vol.22 (5) (2008),p1194-1215

Hot working properties are mainly affected by the following factors: microstructure, temperature, strain rate, and specially flow stress in the deformation zone.
In addition, it has a direct impact on the thermal processing properties of the material.
The effects of Er and Sc on the microstructure and mechanical properties of Al-3.4Cu-0.8Li-0.6Zn aluminum alloy were studied by Li and Jiang et al. [7].
Studies have shown that the main influencing factors of high temperature tensile flow stress of metal materials are strain rate, deformation temperature and strain [14].
Hartley, Effect of stretching prior to aging on mechanical properties in Al-Cu-Li (2195) alloy, Light Weight Alloys Aerosp.

Mechanical Property Test.
Samples of mechanical property test are processed according to China national standards GB/T288-2002 and GB/T299-1994.
Test Result Microstructure and Mechanical Property.
Table 1 Mechanical property of test materials Test materials Tensile strength [MPa] Yield strength [MPa] Elongation [%] Reduction of area [%] Hardness [HRC] Impact toughness [J/cm2] 25Si2MnNi3 1535 1310 11.5 60.0 46.2 51 53Si2MnNi3 2250 1890 7.3 37.0 57.6 13 Mechanical property of test materials is shown in Table 1.
Under impact abrasive wear resistance condition, the hardness and the toughness are two main factors which affect the material wear resistance.

These factors have to be considered as virtually non-suggestible but their affecting during the adhesive bonding application is relatively significant [5].
Thus, the adhesive bond is not supposed to maintain its properties during the whole time of moral and physical lifetime of the bonded set.
Gerald, Pethrick [7] declare that the environment changes can influence both the way which modifies the adhesive physical properties in time and the strength of the interface adhesive – adherent.
Degradation processes affecting the adhesive bonds were continuously evaluated after passing set time intervals – 2, 4, 8, 16 and 32 weeks.
Žarnovský, Impact of atmosphere to improvement of the mechanical properties of metal materials (Vplyv plynných atmosfér na zlepšenie mechanických vlastností kovových materiálov).

It is analyzed that the preload of bolt, contact pressure of the components and the other components’ mechanical properties by nonlinear analysis.
Introduction Beam-to-column connections are integral element of a steel frame, and their behavior affects its overall performance under loading.
Because of the complexity of connectivity features, finite element analysis of simulation considered such factors as the pre-tightening force of bolt, bolt hole extrusion, all the frictional contact, geometric nonlinearity, material nonlinearity and contact nonlinear.
According to Specification of Testing Methods for Earthquake Resistant Building (GBJ101-96), first mechanical behavior of beam-column connection is calculated under unidirectional load.
There are two factors which influence contact pressure.

Studied the effect of matrix and fibers (casing) interface damage evolution and fracture processes on the mechanical properties of the cement sheath, determined the scale degumming, found the main factors which affect degumming length, which provide reliable design basis for improving the well casing repair technology.
Composite mechanical model and basic assumptions Cement loop interface damage can be simplified as mechanical model shown in Fig.1, in which a for casing inner diameter, b for casing outer diameter, in the range of Rrb ≤≤ ，is composite material (matrix) composed by formation and cement loop.
Because volume fractions of formation is much larger than that of cement loop, the mechanical properties of composite materials which composed by cement loop and formation can be obtained: m fG G= ， m fγ γ= ， m fE E= Where: , ,ff fG Eγ and mmm ,, EG γ are the shear modulus, Poisson's ratio and elastic modulus of composite material.
While the degumming work of cement loop is determined by its own physical and chemical properties, which shows in another angle that the cement loop performance greatly influenced its damage, therefore, in order to improve the well repair, not only to focus on improving the repair well technology, but also improve the performance of cement loop.
Conclusions Established the fiber - matrix composite mechanical model which set hollow fiber as casing, set cement loop and earth as composite matrix, and educe stress and displacement formula for fiber - matrix.

Macroeconomic risks Under the economic environment, those factors that affect planning of charging facilities mainly include the speed of economic growth, urbanization level, people disposable income and so on.
Evaluation factors set is the collection of the various factors influencing the evaluation objects, establish factor set as , it should meet requirement that ,,.Then divide into sub factors set as .
To reflect the importance of these factors,we use to show the corresponding weight of factors.
The policy and legal risks are the most critical factors that affect business investment, technology and industry risks rank only second to police and legal risks.
Therefore, land resource is the second factors that affect the construction of charging facilities

Introduction During sheet metal plastic forming processes, some forming defects often occur on the workpieces, such as fractures, wrinkles, over tolerance on dimensions or abnormal shape, and these would affect the manufacturing quality of workpieces[1].
Moreover, evident shape distortion appears after unloading for the poor shape holding ability induced by the large springback, and seriously affects the geometric accuracy of workpieces.
Uniaxial tensile test was conducted to reveal the mechanical and forming properties of TC2Mδ1.53, respectively on 0º, 45ºand 90º directions, the elastic modulus(E) were 126.2GPa, 118.1 GPa and 115.6GPa , the Poisson's Ratios(µ) were 0.42,0.16 and 0.17, the yield stresses were 754.9 Mpa, 713.2 MPa and 672.5MPa, the normal anisotropy coefficient (r) were 1.72, 2.38 and 2.15,the average strain hardening index (n) was 0.071, the coefficient K in stress strain curve was 957.5 MPa.
Generally speaking, there are three key immanent factors which cause the shape distortion during the cold raising of titanium alloy sheets in room temperature, the first is the low elastic modulus which causes large springback, the second is the different E value at different angle, and the last is the planar anisotropy which induces the unhomogeneous strain distribution.
Second the top surface of the raising specimen is distorted to be a wavy surface too, and the distortion shape is similar as that in the flange. 3) The formation mechanism of shape distortion can be summerized that it is resulted from the co-operating of three inner factors (extrusive anisotropy, low elastic modulus value and directionality of E) during two processes (active deformation and springback processes).

Owing to the reduced bending properties and requirements concerning the ductility of metal sheets made from aluminum alloys in comparison to metal sheets made of steel, small hemming radii with a small radius operating line are difficult to produce.
The influencing factors that have an effect on the forming result during roller hemming are shown in Fig. 5.
The essential influencing factors are to be examined with a definite number of tests [9, 10, 11].
The influencing factors were sorted corresponding to significance so as to determine the influencing factors for the roller hemming process.
These two factors were shown to be the significant factors in the main effect analysis.