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Intermetallics with the B2 structure form a large group of intermetallic compounds with a broad variation of chemical, physical and mechanical properties.
Ordering transitions are accompanied by anomalies in many physical properties including diffusion.
These properties limit the use of pure MoSi2 as a structural material.
D0 are the pre-exponential factors of volume and grainboundary diffusion.
Kim, The 15th Japan Symposium on Thermophysical Properties 263 (1994) and 395 (1995)

This change in topology can affect body behavior and computation time as well.
A year later, Terzopoulos [10] incorporated physical properties directly in a graphical object for the first time, and coined the term deformable models.
The method for solving the dynamical equation and the integration parameters affect simulation results.
The non-linear extension increases computing time by a 4 factor.
Damped springs with associated stiffness and damping coefficients are used to model stretching characteristics along each axis of interest; angular springs can be added to specify shearing properties.

The bearing capacity, strength and wave attenuation performance of the structure are influenced by it’s geometrical dimension regularly, and so will affect the project implementation in a practical way.
Material properties of the structure.
Based on an overall consideration of various factors, it is reasonable to choose the geometric dimension of the structure of α = 65 °, h = 15m, D = 3.4m, t1 = 25mm, t2 = 30mm.
Xie: Analysis of Mechanical Characteristics of Deep Water Drilling Riser [J].

Structural vibration induced by underground trains is affected by vehicles, rail, geotechnical, structural and other factors, the process is very complicated[6,7,8], the vibration source values of the underground train has not yet been given in the corresponding specification[9], Therefore, during the assessment of structural vibration in more complex situation , there is still a need for targeted numerical calculation.
Fig.1 Futian underground hub Fig.2 Typical cross-sections Analysis of train induced vibration To get quantitative results with high degree of confidence, it is necessary to consider the following key points: high speed train vibration load, track structure, the station structure, soil properties, and vibration transfer rule.
Factor of Track Structure.
Fig.5 Rail pads and the mechanical model Characteristics of Foundation and viscous-spring Boundary Parameters.
For Futian station's underground wall and plate, a unit width is taken to calculate, and is regarded as a elastic foundation beam under soil pressure, the action of soil is simulated by a normal spring with a concentrated force, the spring represents compressed soil area , in which is width of the wall unit and , then the pressure distribution on the area is: (2) By Boussinesq solution, displacement under the effect of is available: (3) spring stiffnessof a single unit: (4) is shape factor related to ,can be deduced by linear interpolation: when ,,when,,and when, Different for each soil layer can be reflected by, that means, a harder

However at these temperatures in air, Si-C-O fibres are affected by delayed failure under mechanical loading [3].
Yet, recent investigations on other Si-C-O fibres have shown that this factor do not solely account for the disparities in the fibre reaction rates.
This is achieved by considering a wider range of fibres with specific properties, as well as model materials such as Si-C-O oxycarbide glasses or pure SiC.
If the percolation state of the free carbon phase is not the main factor controlling the reactivity of these three fibres, then the nature of the heteroelement is likely to play a critical part.
Other Tyranno fibres (ZM, Lox-E, ZE) containing similar heteroelements but less oxygen, are currently being studied to clarify this point Conclusion This kinetic study of the reaction between various Si-C-O materials and chlorine has shown that the mechanism is essentially similar but the reactivity (the kinetic constant K) varies considerably with several factors related to the initial composition and structure.

Introduction Friction stir processing (FSP) is a new solid state processing technique which is essentially a local thermo-mechanical metal working process that changes the local properties without influencing the properties of the bulk material.
In FSP, a rotating tool containing a shoulder and a pin provides frictional heating and mechanical mixing in the area covered by the tool in a moving monolithic plate.
A continuously cast AA5083 sheet was friction stir processed and cold rolled in order to compare the properties with the as-cast and rolled material [3].
It was found that the inclusion of the FSP step, before rolling and recrystallization, refined the recrystallized grain size, increased the tensile elongations by a factor of 2–3 at a temperature of 510 oC , giving the material greater forming capabilities.
Conclusions The present results on FSP AA5083 suggest that the experimental parameter of FSP affects the the produced grain size and the deformation mechanisms conrtolling the deformation process of FPS samples at 250 oC depends on the grain size and transitions from superplastic deformation to viscous glide to dislocation climb are observed with increase in grain size from 0.95, 1.6 and 2.6 um, respectively.

The effect of the baffle geometry parameters strangely affected the calculated heat transfer rate.
The friction factor increases with decreasing PR and ADR insert and decreases with increasing Re.
In the present analysis, the Newtonian incompressible fluid properties are assumed constant, and the Boussinesq approximation is considered.
Salhi, Numerical analysis of the properties of nanofluids and their impact on the thermohydrodynamic phenomenon in a heat exchanger.
Periodica Polytechnica Mechanical Engineering. 63, 2. (2019) 100-112

It's location in wave band is shown in Fig.1: Fig.1 THz region of the electromagnetic spectrum position Terahertz compared with conventional light sources has many unique properties: transient[2], low-energy , highly absorbed by most polar molecules, high permeability and so on[3].
This property can be used in the THz image since people are usually tested stand in the middle of the THz imaging device.
To focus attention on human body and reduce the noise in the background to affect the selection of seed point.
The location impact factor can be introduced as: (1) where , are the center coordinates of the image.; , are the coordinates of the blocks centre; is the maximum distance from image centre to others point in one image.
Image / video retrieval and image fusion [M].Beijing: Mechanical Industry Press, 2011:167-174.

The modified 9Cr1Mo steel exhibits better tensile and creep properties than the plain 9Cr1Mo steel with the addition of Vanadium and niobium, as well as most of the Cr-Mo steels from low to high content of Chromium [2].
In above working stress and elevated temperature conditions, the creep deformation and rupture are important in the determination of limiting design factors such as strain histories, damage field evolution and lifetimes [4].
The extent of softening, which is easiest to think of two extremes of behaviour, depends on a number of factors which are now physically understood and reasonably well quantified [10]: (a) Under the condition of high stress and/or low temperature, creep softening of materials is negligible because of a low density of cavitation, cavitation is unconstrained; (b) Under the condition of low stress and/or high temperature, creep softening of materials is high because of a high density of cavitation, cavitation is constrained.
Chabaud-Reytier et al. [13] have made a quantitative study of intergranular damage in heat affected zones materials such as OKR3U and 316 L(N) material, and got the relationship between the cracked boundary length and the total grain boundary length .
Current study of creep cavitation behavior by advanced techniques If the assumption of the main cause of creep failure is the nucleation, growth and coalescence of cavities on the grain boundaries is validity, the advanced techniques by X-ray microtomograhy provide hope of understand the underlying mechanisms of damage and promote the development of new mircro-mechanical models that use the quantified cavitation behavior to predict the creep life of high Cr steels and its weld.

Lei Bin et al, Tongji University, studied the water-cement ratio, cement content, recycled coarse aggregate, mineral admixture, recycled coarse aggregate replacement ratio on properties of recycled concrete carbonation.
The results show that the carbonation of recycled concrete is not only affected by the new mortar, but also by the replacement ratio of recycled coarse aggregates and their own strength.
Hansen and Narud experiment found that with other factors in the same conditions, the anti-pressure intensity of recycled concrete is mainly decided by the water-cement ratio of original concrete and recycled concrete.
Anti-pressure strength is tested in accordance with GB/T 50081-2002 Mechanical Tests on Ordinary Concrete Standards.
Hansen, Henrik Narud, Strength of Recycled Concrete Made From Crushed Concrete Coarse Aggregate, Concrete International, 1983,5(1):p79-83 [3]Li Wenxia, Zhou Qi, Corrosion of Reinforced Concrete Carbonation and Influencing Factors, Gansu Science and Technology, 2008(5):p132-134 [4] Xiao Jianzhuang, Li Jiabin, Sun Zhenping, Hao Xuanming, Study on Compressive Strength of Recycled Aggregate Concrete, Journal of Tongji University (Natural Science) 2004 (12):p1558 -1561