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The results indicated that the properties of the samples such as the setting time, the compressive strength related to the phase analysis of the set cements.
Good properties degradation and rapid degradation rate may lead to the formation of immature bone [3, 4].
The micropores or macropores are not only critical for the above biological behaviors in CPC, but also increase the surface area available for the reaction, enhancing their ability to load growth factors or drugs.
Conclusion In this work, the calcium phosphate cement containing β-TCP affecting the pH of liquid phase was studied.
Bouler, Fabrication and mechanical properties of calcium phosphate cements (CPC) for bone substitution, Materials Science and Engineering: C 31 (2011) 740-747

Introduction Composites are anisotropic materials, with varying mechanical properties depending on the direction considered.
Consequently, reinforced fibre composites such as carbon/epoxy are currently attracting lots of attention because of their advantageous mechanical properties.
Another influencial factor is the temperature of the liquid medium, given that a water temperature difference of 1°C results in a 5m/s variation in the ultrasonic wave speed, which in turn automatically affects the determination of the elastic properties of the material.
The three-dimensional characterization of the elastic properties of thin composite materials is difficult.
The elastic behaviour of an anisotropic composite material is described by a rigidity matrix of 21 independent elastic properties.

Azadbeh, Microstructure–mechanical properties correlation in spark plasma sintered Ti–4.8 wt.% TiB2 composites, Mater.
Lee, Mechanical properties of ZrB2- and HfB2-based ultra-high temperature ceramics fabricated by spark plasma sintering, J.
Guo, Densification of ZrB2-based composites and their mechanical and physical properties: A review, J.
Daw, Ab Initio Computations of Electronic, Mechanical, and Thermal Properties of ZrB 2 and HfB 2, J.
Yamanaka, Mechanical and thermal properties of bulk ZrB2, J.

Finite Element Analysis Of Grinding Temperature Field With Water Vapor As Coolants Jialong Ren1,a, Ligang Zhao1,b, Yan Wang1, Chunyan Zhang1 and Xirong Tian1 1 School of mechanical engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212003, China a zjrenjialong@yahoo.com.cn, bzhaoligang@just.edu.cn Keywords: water vapor, cooling, grinding temperature field, finite element method Abstract：Combined with the fluid mechanics, heat transfer and cooling experiments of grinding to obtain the conclusions: the water vapor with certain pressure and temperature has large heat transfer coefficient and can significantly reduce the temperature of grinding zone in grinding process.
In the end, contrasts the data between simulation and experiment of grinding temperature to prove scientific properties of the finite element method simulation.
Inverse grinding; Linear velocity of grinding wheel vs is 26.38 m/s; The percentage of heat transferred into the specimen Rw is 34%; Tangential grinding force Ft is affect by other parameters of grinding and can be calculated with empirical formula from refrences [4].
Heat transfer coefficient h between the water vapor and the specimen is affect by the surface roughness of the specimen, the stability of the water vapor flow and the thermal physical parameters and is a estimated value.
The two factors make the temperature gradient large along the grinding depth.

Introduction The grinding-hardening is a new technology utilizing heat and mechanical composite effect induced in grinding to quench the surface of steel directly.
Brinksmeier and other scholar proposed this new technology [1], many scholars studied on the grinding-hardening technology, but the relevant research was confined to the aspects such as one-pass surface grinding or cylindrical grinding-hardening, the microstructure and properties of hardened layer at the part of workpiece and the prediction of the hardened layer depth etc [2-11].
This paper was based on surface grinding-hardening experiment, and studied the effects of grinding parameters and grinding method on the organization and properties in the grinding-hardened workpiece of 65Mn steel.
All of these factors caused the heating temperature of the material in the workpiece's surface to be above quenching phase-transition temperature from the cut-in point in reciprocating grinding.
Liu: China Mechanical Engineering, Vol. 15 (2004) No. 17, pp.1573-1576.

Through these techniques, scaffolds characteristics can be modified to produce an ideal scaffold that possesses good biodegradability, biocompatibility and mechanical properties for tissue regeneration [1].
Many available bone grafts are currently available in market, however there are exhibit several limitations such as high cost, environmental toxicity, inappropriate biodegradable rate, and weak mechanical properties [2].
Therefore, the development of new bone tissue scaffold is vital by not only provide adequate mechanical properties but also great capacity for vascularization in the body.
However the addition of HEC with other polymers proved to boost the bioactivity, mechanical properties and helped in protein adsorption, thus increased the cell availability and proliferation bone tissue engineering applications [4].
The morphological surface of scaffolds is one of the crucial factors that influence the cell attachment, proliferation and differentiation.

Through the evaluation on blasting affects of the first excavated tunnel when the last excavated tunnel in the initial stage is into tunnel hole, establish the relationship of blasting vibration disturbing degree both neighborhood tunnels to improve the accuracy.
Only the trade between the above factors and blasting technology for blasting vibration control effective is reasonable, feasible.
Attenuation Law of Leismic Wave For controlling blasting vibration effectively，researchers at home and abroad study the attenuation law of seismic wave mainly through statistical analysis for observed data at the early stage and the stage of development of the study for blasting seismic effect, and regard a quantity of explosive and the distance from the explosion center as the main factors of the strength of blasting vibration.
Sadovski proposed empirical formula about attenuation law of blasting vibration intensity of various regional according to his study: (1) In the formula: K, n—the experience coefficient is related to the site conditions and the medium properties Q—a quantity of explosive R—the distance from the explosion center K—character constant of blasting site Sadovski conform the range of constant k and coefficient Blasting Vibration Test System The field test of blasting vibration test system is IDTS3850.
Part I: Equivalent Material Property Approach[J].

Resistance wall structure actually integrates the properties of closed-die and flash slot structures, which assimilates their advantages of filling capacity and service life.
Several Factors impact the physical underlying phenomena behind die failure on forging processes: pressures, sliding velocities, hot hardness and a variety of physical and mechanical properties.
This treatment will not affect the evaluation.
From the preceding analysis we can see that die failures are closely related to the system properties of high load and high heat.
[5] ZHOU Jie: Chinese Journal of Mechanical Engineering.

The results show that the morphology and width of the diffusion dissolution layer were significantly affected by the electric field strength.
They are also being increasingly used in the electronic industry for their attractive electromagnetic and thermal conductive properties [1,2].
However, poor corrosion resistance and mechanical properties limited the application of magnesium, so considerable attention has been focused on it.
A variety of factors have been shown to contribute to the current effect such as current density, current direction, current pattern, temperature [9].
It is wellknown that the relationship of the diffusion layer width h and diffusion time t is: (1) and the rate constant k dependents on the temperature T and the activation energy Q： (2) where is the pre-exponential factor, is the gas constant [3].

.%) Al Mn Zn Fe Si Be Cu Mg 3.19 0.334 0.81 0.005 0.02 0.01 0.005 Balance Mechanical properties test at room temperature Uni-axial tensile tests at room temperature were carried out with 1.0mm thickness specimens.
The flow stress behavior of AZ31 Mg alloy at low and constant strain rate, and at room temperature can be simplified with the Hollomon equation (see Eq.1), here, K and n are the work hardening coefficient and exponential factor, respectively
(1) The mechanical properties of the material were measured by the stress-strain curve, and shown in Table 2.
Table 2 Mechanical properties of AZ31 Yield stress, σs [MPa] Tensile strength, σb [MPa] n K, [MPa] 183 257 0.184 425.96 Experiments The SHPB tests have been performed with Ф5mm×5mm cylinder specimens on the high-temperature SHPB system of the Northwestern Polytechnic University of China, which was given in Ref.[4].
Flow stress is obviously affected by deformation temperature and decreases with the rise of temperature at a certain strain rate.