Search results

Then, with mixture of fiber reinforcement polymer and concrete will improve mechanical properties.
With using finite element method can predict new mechanical properties.
In the development of confined concrete, there are several factors can be considered in investigation such as cross section shape [13,14], material chosen for confined jacket [6,15,16], and cross-sectional aspect ratios [17] to optimized mechanical strength in confining system.
This paper proposes confined concrete model by existing short steel 4340 fiber as reinforcement on predicting mechanical properties for both compressive and flexural performance.
Material properties.

Experiment on Doping Rare Earth Diamond Tools Matrix Composites with Fe Replacing Co Qing-Hua ZOU1,a,* and Zhen-Guo WANG1,b 1School of Mechanical Engineering and Automation, Wuhan Textile University, Wuhan, China, 430073 aqinghuazou555@163.com, blaoyong@sina.com *Corresponding author Keywords: diamond tool, doping cerium, matrix composites, mechanical properties Abstract.
In view of these factors, this study makes experiments on rare-earth doping technique of diamond tool (matrix) composites respectively by means of the improved doping technique and get a great success.
Four largest problems encountered in doping technique include: (1) After doping, the dried power of metal alloy is easy to form vary hard small particle block which is easy to meet with oxidization, seriously affecting the grain size and quality of the powder and the doping effect of uniform diffusibility to which the doping rare earth should reach up.

The model is found to accurately predict minor strains during multi-pass forming, while over-predicting major strains, likely due to material property and friction affects unaccounted for in the model.
This is consistent with Bambach’s identified limitations of material properties and the influence of friction [3].
This is consistent with the limitations identified in Bambach’s model and shows the influence of material properties and friction effects.
The combination of modes of material displacement in all of these degrees of freedom is therefore a function of the material properties, the part geometry and the friction conditions, consistent with the limitations identified by Bambach [3].
Deviations from the experimental results occurred corresponding to the region of line contact, indicating that the deformation in this region may be affected by other factors such as part shape or material properties.

The microstructure and properties were investigated by means of optical microscopy(op), scanning electron microscopy(SEM), X-ray diffraction(XRD) and microhardness meter.
The wear resistance of a hardfacing alloy depends on many other factors such as the type, volume fraction and distribution of hard phases, as well as the toughness of the matrix.
Plasma transferred arc(PTA) weld-surfacing process, with its advantage of using two independent arcs(i.e. nontransferred arc as pilot arc and transferred arc as a main arc), shows some advantages such as low dilution and high degree of reproducibility over other welding-surfacing processes[8], and is applied in the present investigation to study the resulting coating properties.
A uniform, adherent and crack free cladding layer along with the heat-affected zone is shown in the figure.
Hardness properties.

This research narrows the control factors to droplet size and scanning pattern while keeping the rest at reasonable levels so that the printing process is robust and the result is repeatable.
Given these factors are correctly settled, a bipolar waveform sent to the piezo actuator for triggering is very important in controlling the droplet formability, size, ejection velocity and repeatability.
The result also shows the factors of pitch and hatch have a significant control of the layer thickness which could be varied between 13 to 60 microns.
And the layerthickness will further affect the surface roughness.
The next step is looking at printable material from a wide range of solutions and suspensions to meet the requirement on electrical or optical properties.

As indicated by most relevant investigations, temperatures in metal cutting affect both the shear properties of the work material and, cutting edge.
Trent and Wright [10] explained that the cutting forces or power consumptions were not affected by the temperature near the cutting vicinity.
Zorev [8] also found that the maximum temperature at the end of the chip formation zone was not high enough to cause a considerable reduction in the mechanical properties of plain and alloyed steel.
Moreover, Altintas [11] claimed that cutting temperatures could not be considered as a significant factor either in the cutting mechanics or on the dynamic stability and structural errors of the machining system.
Artozoul, et al: Extended infrared thermography applied to orthogonal cutting; mechanical and thermal aspects (Applied Thermal Engineering (2014))

Despite the attractive range of bulk mechanical properties, a relatively poor resistance to wear and corrosion is a serious impediment against wider application of magnesium alloys.
In addition, because of the poor wear properties of magnesium alloys, their application is limited to the static component field [4].
Wear and corrosion are essentially surface related degradation mechanisms that may be reduced or minimized by appropriate tailoring of the surface microstructure without affecting the bulk [5].
To improve the surface properties, a variety of surface modification technologies have been proposed and investigated.
[6] have studied magnesium alloys surface cladding by CO2 laser with an aim to enhance the anti-corrosion and wear resistance, and they concluded that these properties were improved.

Impurities can change the chemical and physical properties of cassiterite, affect the permeability, plankton and other optional feature.
Shaking table includes two basic process loose move layering and zoning, ore particle stratification and pulp of agglomeration and dispersion properties.
The major factors affecting the conversion rate with the reaction rate of the solid material is calcined at the calcinations temperature, the particle size of the solid material, the nature of the outer surface of the solid particles, the ratio of materials, and each of the reaction components in the gas phase partial pressure, etc.
It has trapezoid double tank and dynamic drive form, cam lever type mechanical transmission mechanism.
[2]Zeqiang Zhang, Surface electrical properties for research on the effects of slime gravity separation [J], Non-ferrous metals, 1987 (5) [3]Zhongxiu Yang Spiral chute sorting practice[J], Non-ferrous metals, 1981 (1)

One of the most important factors that affect the scanner choosing is the time of scanning and the size of the scanned object.
At the same time, it was essential to evenly apply the sprayed layer as this factor may also affects the approximation rate of a created model toward its original and a finite accuracy of the component created on the basis of a virtual 3D model.
In: Conference IMAP 2013, Presov, FVT TU, (2013), p. 6-10 [6] Spisak, E., Majernikova, J.: Analysis of variance of mechanical properties of sheets as the input parameters for simulation of processes, In: ActaMetallurgicaSlovaca, Vol.18, no.2-3, (2012) p. 109-116 [7] Kadnar M. et al.: The design and verification of experimental machine for real journal bearing testing, Technical Gazette, Vol. 18, no.1, (2011), p.95-98 [8] Gaspar, S. et al.: Dependence of Pressure Die Casting Quality on Die Casting Plunger Velocity Inside a Filling Chamber of a Pressure Die Casting Machine, In: Advanced Science Letters, Vol. 14, no. 1 (2012), p. 499-502

Materials Properties.
Chemical Properties.
Physical Properties.
Machining Properties.
Thermal Properties.