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Unfortunately, the unique physical and chemical properties that make these alloys suitable for many applications also contribute to the difficulty with which they are cut or ground.
Furthermore it will affect the dimensional accuracy and the form accuracy[5].
The conclusions can be obtained as following: 1) The numerical model of dry belt grinding titanium alloy has been developed depending on different factors which have been taken into account during the modeling process, including the three kinds of compounded boundary conditions.
Chinese Mechanical Engineering, Vo1.9 (4) (1998), p.2
The Finite Element Method, (Mechanical Industry Publications, China, 1992)

Regardless of how many factors affect the composite elastic modulus, the elastic modulus can be obtained that meet the engineering requirement under the condition of safety using.
Therefore during the process of temperature changing, its mechanical property appears as viscosity-elastic.
[3] Yan Guanlong, The Study of Energy Consumption and Several Mechanical Properties of Steel-Plastic Composite Heating Buried Pipe Taiyuan: Taiyuan University of Technology: (2010) p.40-42
[4] Wang Fei, The Experiment of Buried-heating Sand-boxed Experiment Platform Development and Mechanical Properties.
An Experimental Study on the Friction Factor of Large Diameter Precast Buried Heat in Pipes.

Legacy 7XXX series aluminum alloys were developed primarily for their high strength with less regard for their fatigue properties, corrosion resistance and fracture toughness.
Various structural elements made from these alloys exhibit failure in service due to one or more of these compromised material properties.
Both SCC and fatigue are driven by a mechanical driving force: the stress intensity at the crack tip.
Hardie, “Factors controlling crack velocity in 7000 series aluminum alloys during fatigue in an aggressive environment”, Corr.
[4] DOT/FAA/AR-MMPDS-01, Metallic Materials Properties Development and Standardization (MMPDS), Office of Aviation Research, Washington, D.C. 20591, (2003)

However, back analysis is an efficient method to evaluate mechanical parameters.
Although numerous engineering examples had confirmed that the multilayer feed forward network was an effective neural network model, but there were two important factors directly affecting the predictive ability of the network.
Using the orthogonal design and uniform design method to create the samples of rock mechanical parameters to be trained.
Table 1 Material property of V grade surrounding rock and retaining structure Name Type E(Gpa) μ C(kPa) Φ(0) (Kg/m3) Surrounding rock isotropic 1～2 0.35～0.45 50～200 20～27 1900 Linear isotropic 30 0.2 / / 2500 Bolt isotropic 150 0.3 / / 7700 3.3 Sample designed of the mechanical parameters For establishing the accurate nonlinear mapping prior relationship between mechanical parameters of surrounding rock and displacement, a certain number of samples of the neural network were needed to be trained[6-8].
This paper adopted the orthogonal design and uniform design method to create the samples of rock mechanical parameters to be trained.

Valve bonnet and valve seat are the key parts of diaphragm gas meter, which compose the main factors of its metering error.
They play the role of flow seal and mechanical operation in the process of rotation, composing the main factors of metering error about diaphragm gas meter.
And there is an important relationship between surface texture and the mechanical, physical properties of workpiece.
At the same time, due to the presence of measurement error sources, there is a little deviation between the experimental value and the stylus profilometer measuring value, which does not affect the judging results whether the measured workpiece are qualified or not.
Mao, Research of air-tight property detector used in diaphragm style gas meter, Journal of China University of Metrology, 22 (2011) 15-19

Therefore, it is interested to investigate the factors which affect to the nuclei formation and growth of nuclei under synthesis.
Shen et al. [9] study factors that affect the growth of particle under microwave irradiation using Zn(acac)2.H2O (acac = acetylacetonate) as precursor.
The additive is an important factor in the formation of ZnO with different morphology.
The PAA as polymeric additive is an important factor for controlling the morphology of ZnO nano rods.
Suntako, Cure characteristics and mechanical properties of ZnO nanoparticles as activator in unfilled natural rubber, Adv.

Introduction Two-phase flow instability is an important problem that affects the running of SG (steam generator) in nuclear reactor systems.
The flow instability is undesirable as it may result in sustained flow oscillations, which can cause mechanical vibrations, problems of system control and boiling crisis [1].
Because the perturbation of heat flux is time and space dependent, each region of heated section is subdivided axially into small control volumes within which heat flux profile, heat transfer coefficient and some other factors are assumed to be uniform.
Table 1 Geometry and operating parameters Properties Symbol Value(Unit) Properties Symbol Value(Unit) Tube inside diameter di 0.0125(m) Pressure of the secondary side P2 3.2(MPa) Heated length L 1.3(m) Inlet subcooling Tsub 0.0-220.0(℃) Tube outside diameter do 0.0150 (m) Mass flow rate W 220 (Kg/(m2﹒s) Pressure of the first side P1 15.1(MPa) Inlet orifice loss coefficient ki 0-1200 Fig 4.
Furthermore, Figure 6 also shows that changes in coupling factor affect the stability of the system.

In present work, the key Influence factors on solidus temperature have been discussed, and it can be calculated by a mathematical model for solute microsegregation during the solidification.
The factors to the model precision contain the model arithmetic and thermal physical parameters.
Influence factors for Solidus Temperature.
Table 3 Thermal properties of steels Steel Liquidus Temperature,℃ Solidus Temperature,℃ Equilibrium Non-Equilibrium 0.20C 1513.0 1485.0 1445.0 0.45C 1494.0 1443.0 1397.0 0.71C 1464.4 1383.0 1317.0 Comparison of solidification process.
(1)The carbon content and cooling rate are key Influence factors on solidus temperature, However, the experiment is not enough presently.

Drilling diameter and space between drillings are main factors influencing pressure relief effect.
These phenomena are a direct threat to the safety of construction workers and equipment and the progress of the project is affected.
The results show that there exit areas of high stress gradient in roadway gills where the factors of stress concentration and the incidence rate of rock burst is high.
Considering the heterogeneity of rock physical properties and the complexity of stress distribution in rock mass, the stress concentration factor in the local range is certainly much larger than 1.36.
(3) The factors of effect on pressure relief are mainly the hole diameter and the drilling spacing.

In order to study various factor affecting durability of steel fiber reinforced concrete (SFRC), basic experimental research that combine the action of freezing-thawing cycles and deicing salt to SFRC was conducted.
The reinforced actions of steel fiber on splitting strength of concrete are notable and the influence of steel fiber volume fraction on the frost-resisting property is obvious.
Introduction The last 20 years, steel fiber has been applied widely in the professional fields of civil engineering, water conservancy and construction step by step, owning to the excellent properties of high strength, durability, ductility and so on.
There are many experimental studies at home and abroad show that steel fiber significantly improve most mechanical properties of concrete[1-2], but its influence on durability of concrete requires further study.
The influence of steel fiber volume fraction on the frost-resisting property was obvious.