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Waspaloy is a γ' strengthened nickel-base superalloy that is used for manufacturing gas turbine engine rotors and disks, due to its good high temperature mechanical properties and corrosion resistance too[2].
However, the negative effect is that some brittle intermetallic compounds are generated and decrease the mechanical properties[5].
The brazing quality is influenced by many factors including brazing temperature, filler metal thickness, holding time, cooling rate, etc.
The brazing temperature and the brazing clearance mainly affect the amount of solid solution and the microstructure of brazing joint.
Lower microhardness of the solidified zone nearby the brazing affected zone might be attributed to the absence of intermetallics and the presence of high performance solid solution.

With composite specimens as cathodes and increasing electrode distances, the composites are severely damaged due to serious sparks whose formation are affected by the geometry of electrode setups.
Associated with a strong electrical, magnetic turbulence and a mechanical collision, the arc severely damages the contact materials [2].
Thus, a high strength and good wear resistance, high electrical and thermal conductivity, and good chemical stability are required properties for good contact materials [2-4].
However, no researche regarding the arc erosion behavior of short fiber reinforced composites have been performed though they exhibit better properties and are predicted to have different arc erosion behavior [7].
The damages of composite materials caused by spark erosion are basically dominated by three factors: (1) solid-state wear, (2) liquid formation, and (3) liquid flow [8-11].

In many industrial application case, machined surface state of precise or burden part affects directly on its fatigue life, chemical corrosion resistance and abrasion capability.
In hard cutting process, elastic-plastic deformation of workpiece material often occurs in the case of high temperature and large strain rate, therefore, how to effectively describe material properties is one of the key for Finite Element simulation.
The second and third factor express the strain-rate effect and temperature effect respectively.
The machinery physical properties of workpiece materials 42CrMo steel and Johnson-Cook material model parameters [6] is shown in Table 1 and Table 2 respectively.
Table 1 Physical properties of 42CrMo (HRC56) Mass density (kg·m -3) 7830 Young's modulus (GPa) 210 Poisson ration 0.3 Thermal conduct (w·m -1·℃-1) 46 Specific heat (J·kg -1·℃-1) 500 Thermal expansion (µm·℃-1) 12.3 Table 2 J-C behavior parameter of 42CrMo 595 D1 1.5 B(MPa) 580 D2 3.44 n 0.133 D3 -2.12 C 0.023 D4 0.002 m 1.03 D5 0.1 Tool-chip Contact and Friction State in Cutting Process.

As an example of collapsible loess foundation treatment project in central and southern shanxi tunnels five railway culvert, the collapsible loess and harm of engineering properties, this paper introduces the construction method by cement-soil compaction pile to reinforce the foundation in order to ensure the quality and effect of the overloaded railway foundation.
All those will seriously affect the normal operation and safety of train.
The Reinforcement Principle for Compaction Pile The root reason of foundation treatment for collapsible loess is to destroy the macroporous structure and to improve the engineering properties of soil in order to eliminate or reduce the collapsibility and deformation of foundation.
The reinforcement principle for using soil compaction pile to deal with collapsible loess foundation is to drill holes and compact cement by layers then resulting in the lateral compression pressure to compact the soil between piles and improving engineering geological properties of the foundation.
Hole mechanical surface should have obvious penetration tag in order to control depth of hole.

As well known, poly(lactic acid) has better potential of mechanical properties [1].
In biomedical application, poly(lactic acid) has been widely applied by considering of its mechanical properties as bone screw, scaffolds material and suture [2-3].
Enhancement of mechanical properties as well as degree of crystallinity of poly(lactic acid) can be obtained by this method.
Finally, weight lost of composites and pH values of PBS solution were documented at each time and then degraded composites were analyzed their thermal properties, thermal stability and morphology.
Characterizations Thermal properties of the materials were analyzed by DSC60 (Shimadzu, Japan).

Introduction Pressure ulcer results from a combination of factors of which the main cause is unrelieved contact stresses between the cushion and the human body [1, 2, 3 and 4].
The objective of this study is to design the parameters of that two-phase mixture cushion via investigating the factors that affect the pressure-relieved performance of this new pressure ulcer-preventing cushion, and those factors includes the filling ratio, the thickness of the cushion, the radius of the beads and the porosity of cushion.
The hyperelastic property and the isotropic elastic property are used to describe the mechanism behaviors the human soft tissue and the cushion, respectively.
Pressure Ulcer Risk Factors Among Hospitalized Patients With Activity Limitation.
A contribution to the mechanical and geometrical study of non-cohesive masses[C].

Aluminium reinforced with SiC, Al2O3 and B4C etc. possesses an attractive combination of properties such as high wear resistance, high strength to weight ratio and high specific stiffness.
In the view of physical properties, B4C has less density than that of SiC and Al2O3, which makes it an attractive reinforcement for aluminium and its alloys for light weight applications.
It is used as automobile products (ex. brake pads, engine piston) as a result of these excellent properties.
Rama rao et al., studied the fabrication and mechanical properties of aluminum-boron carbide composites.
[5] Y.Sahin, Preparation and some properties of SiC particle reinforced aluminium alloy composites, Materials & Design, 24 (2003) 671-679

In addition to having superior properties, the bacterial cellulose also has a weakness that is easily contaminated by microbes.
As a result, plasticizer is required to add to improve its properties.
Consequently, the hydrolytic properties in unstable chitosan were improved, then leading to the acceleration and control of the membrane degradation in the water medium.
Conclusion Bacterial Cellulose-Chitosan-Glycerol Biocomposite is showed the characteristic required for artificial duramater candidates due to the mechanical property and the cytotoxicity status.
Preparation and properties of CMC gel.

Petersburg, Russia Keywords: ultrasonics, luminescence, acoustic properties, dislocations, point defects, semiconductors Abstract.
Luminescence Properties of HgI2 under the HAUT.
It is impossible to find out which mechanisms control the acoustic properties of crystals without additional experiments.
Thus, one can try to find out if there exists any influence of HAUT on other properties of crystal.
Such a complex behavior of hδ and ( )hEE � , as well as of ( )iEE � under the action of light and HAUT can be due to a number of factors.

Introduction It is well known, that ultrafine-grained (UFG) materials exhibit superior mechanical properties under monotonic loading conditions, compared to conventional grain-sized (CG) materials.
But also under cyclic loading conditions the UFG microstructure strongly improves the mechanical properties.
For an optimization of the fatigue properties of UFG metals it is essential to achieve a stable UFG microstructure which is insusceptible to cyclic softening.
In addition to the number of ECAP passes, the amount of alloying elements also strongly influences the fatigue properties and cyclic stability of UFG materials.
Höppel, in: Structure and mechanical properties of nanophase materials - theory and computer simulation vs. experiment, edited by D.