Search results

In this study, a voronoi model that presents material properties on a micro scale was developed [6].
Different material properties were then assigned to individual tessellation parts.
As the centroid voronoi tessellations had similar shape and size to the grains on the sheets, while different tessellation parts had different mechanical properties, this voronoi model can present the blank on a grain scale.
However, a monotonous decrease of minimum thickness in the annealing temperature of 1050 ℃ indicated that the randomly distributed grain parts with different material properties affected the strain-stress development and finally impacted the minimum thickness.
Moreover, the randomly distributed grain parts with different mechanical properties affect strain-stress development and therefore the thickness of the drawn cups.

We have developed a new Ti alloy, Ti-15%Zr-4%Nb-4%Ta alloy (Ti-15-4-4) that showed higher biological safety and mechanical properties than the currently used Ti-6%Al-4%V alloy.
These results indicate that the new Ti-15-4-4 alloy has a potential for use as implants and has the advantage of improved mechanical properties described in earlier studies.
Newly formed bone only at sites not affected or only negligibly affected by preexisting cortical bone was used and the bone circumference was visualized.
Implant surface modifications are done to increase surface roughness, increase surface area, and provide bioactive and osteoconductive properties.
It is also conceivable that the topography of blasted implant surface can allow the entrapment and concentration of bone growth factors (e.g., bone morphogenetic proteins) circulating in the medullary cavity causing the surface to be osteoinductive.

This technique is combined with molecular dynamics techniques to study the role played by Fe impurities in the properties of nanocrystalline Cu grain boundary properties.
Properties of grain boundaries in polycrystalline materials are greatly affected by the presence of impurities that segregate to them or, for concentrated alloys, by the local composition.
An adequate choice of solute elements can also control mechanical properties through changes in grain boundary dislocation nucleation behavior.
Impurities or solutes may play a beneficial role in nanophase materials by affecting three different properties, namely hardness, stability and cohesion.
Froes, Symposium on Processing and Properties of Nanocrystalline Materials.

Then the factors of hot spots generated in the production of emulsion explosives and the occurred conditions of the heat accumulation are analyzed and summarized.
Factors affecting the accumulation of explosive system has a lot of heat, is now on the incorporation of impurities within the emulsifier emulsion explosives emulsion process, analyze aspects of mechanical rotation and thermal conditions and their own sense of emulsion explosives and so on.
Summary Through the above analysis, the emulsion is formed hot spots factors may include: explosives mixed with chemical catalytic material systems and air; system mixed with impurities; intense shear colloid emulsion, mechanical kinetic energy is converted into heat; intense friction hard substance, ammonium nitrate crystallization.
In summary, during the production of emulsion explosives explosion must meet with generation of hot spots and heat accumulation in the process, however, many factors affect this process are manifold.
Strictly controlled to produce a variety of hot and heat build-up factors, the most important measure is to avoid the explosion occurred in the emulsion matrix emulsifier.

Introduction Porous ceramics with many advantages, such as low density, good thermal and chemical resistance, and sufficient mechanical properties, have attracted increasingly interest in the past decades [1~3].
This method allows the direct adjustment of porosity and mechanical properties by changing the solid loading in the slurry and the sintering temperature.
The structure and properties of porous silica ceramics are influenced by the above factors.
The structure and properties of porous silica ceramics were investigated, and the fracture morphology were also observed.
It is known that porosity and pore size are main factors which might affect the strength of porous ceramics [9, 10].

The development of graphene is interesting because of its extraordinary chemical and physical properties since graphene was discovered through mechanical exfoliation in 2004.
Furthermore, the process of mechanical exfoliation was performed by ultrasonic cleaning for 6 hours.
Some factors that influence dielectric loss include relaxation of dipolar, interfacial or Maxwell-Wagner-Sillars polarization, defect-induced polarization or loss, oxygen functional groups on the graphene surface and so on [11].
Baqiya, Darminto, Defect and Magnetic Properties of Reduced Graphene Oxide Prepared from Old Coconut Shell, IOP Conf.
Xu, Preparation and electromagnetic properties of multiwalled carbon nanotubes/Ni composites by γ-irradiation technique, Mater.

Experiment Scheme And Device The device sketch of the viscous pressure bugling test is shown in Fig.1.The aluminum alloy sheet used in experiments is 2024, and its mechanical properties are listed in Table 1.
The mechanical properties of the three different viscous medium are shown in Fig.2.The bulging heights of specimens are recorded by the displacement sensor.
Table1 Mechanical properties of 2024 sheet (MPa) (MPa) (%) E (GPa) 244 425 10 68 Fig. 1 The device sketch of viscous Fig. 2 Mechanical properties of the three pressure bulging test different viscous medium Results And Analysis The viscous pressure bulging test using three kinds of viscous medium was carried out.
The typical bulging specimens in the different medium conditions Forming Process Finite Element Analysis Since the viscous pressure bulging process is a coupled deformation process, in which the viscous medium interacts with so many kinds of factors, such as the sheet, the die and so on, it is difficult to obtain the variation of the sheet shape and viscous pressure field by analytic method.
The properties of viscous medium and the molecular weight can affect the formability of aluminum alloy sheets.

It was shown that properties of these implants might be substantially improved with functionally graded materials (FGM).
Different examples are shown and influence of the sintering and gradient profile selection on final properties is discussed.
Existing solutions of materials combinations are not very satisfactory due resulting to wear debris causing complications and low level of mechanical properties in the case of ceramics.
In order to provide superior mechanical, good wear resistance and biological properties in vivo, the functionally graded materials concept can be introduced in to the hip joints design [4].
This was one of the factors of FGM design - to introduce an engineering compressive stress to alumina at the surface of balls and liners.

Other important factors such as load, sliding velocity, temperature effects on the frictional behaviour of these coatings were also investigated.
Introduction The factors controlling the friction behaviour of materials include mechanical stresses, temperature and oxidation phenomena [1].
The complexity of sliding friction arises from the fact that all these three controlling factors are interrelated and influenced by load and sliding velocity as well as the sliding environment.
This paper aims to investigate the friction behaviour of this new and conventional type of coating –AlCrN and TiN, respectively – under different factors of load, sliding speed, temperature and oxidation effects.
Zhao, Friction and wear properties of TiN, TiAlN, AlTiN and CrAlN PVD nitride coatings, International Journal of Refractory Metals and Hard Materials. 31 (2012) 82-88

The software analyses the effect of factors and their relationship with other factors by variation of values in parallel.
Also, the optimum value (28.85% ISN) predicted through the software proved reasonable reduction in granite usage for concrete production without affecting the hardened properties (CS, STS and FS) of the concrete.
Islam, Use of slag as coarse aggregate and its effect on mechanical properties of concrete, Proceedings of the 3rd International Conference on Advances in Civil Engineering, CUET, (2016) 475-479
Atoyebi, Physical and mechanical properties of cement-bonded particle board produced from African balsam tree (Populous Balsamifera) and periwinkle shell residues, Results in Eng. 6 (2020) 100126
Ayo, Effect of guinea corn husk ash on the mechanical properties of lateritic concrete, IOP Conf.