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Online since: December 2009
Authors: Andrew John Ruys, E. Soh
Alumina, a bioinert material demonstrates exceptional stability in the physiological environment with properties of excellent corrosion and wear resistance.
The success of a porous scaffold depends on its ability to provide a functional balance between mechanical strength, porosity, pore size, interconnectivity of the porous structure, and properties of osteoconductivity [3, 4].
In all cases, properties were correlated with the ammonium mole fraction.
Taboas, Optimal design and fabrication of scaffolds to mimic tissue properties and satisfy biological constraints.
Hench, Factors Affecting the Structure and Properties of Bioactive Foam Scaffolds for Tissue Engineering.
Online since: October 2014
Authors: Gui Cheng Wang, Jian Chen, D.F. Tao, L. Lv, Deng Sheng Zheng
Then import assembled model to the ANSYS software, material properties as defined in Table 1.
Spindle, tool holder and tool material properties Material properties Component Spindle HSK63 A type holder Tool Density(ρ)/kg/m3 7850 7830 8000 Modulus of elasticity(E)G pa 206 210 500 Poisson's ratio(μ) 0.3 0.3 0.25 Meshing the model, the used element shape for the model is the 10-node tetrahedral.
Simplify before and after two angular contact hybrid ceramic bearings as the elastic line support, ignoring its rotation nonlinear factors, and taking supporting stiffness of the the bearing as a fixed value.
During machining, in the premise of little influence affecting machining process, the tool overhang should not be too large.
(3) In the premise of not affecting the quality of the machined surface, a appropriate decline of rotation speed allowed can improve the stability of high-speed machining tool system.
Online since: February 2014
Authors: Yan Li Li, Jia Rui Qi, Hua Kai Wei, Li Han
So the load factor and the productive efficiency are high.
Aircraft titanium alloys parts demands excellent mechanical properties, and welding repair problem are brought to the fore.
Compared with the traditional welding processes, laser welding has advantages such as high energy density, low heat input, high weld speed, good microstructural and excellent mechanical properties.
Because of the active chemical properties of titanium alloys, harmful gases such as oxygen, hydrogen and nitrogen would easily be absorbed during welding, and mechanical properties of the joint would decrease obviously.
Because of the advantages of excellent mechanical properties and corrosion resistance, superalloys have been widely applied in aviation and aerospace fields.
Online since: December 2013
Authors: Abdul Azeez Aliyu, Musa Hamidon, Jafri M. Rohani
It has unique capabilities to produce complex shapes on conducting materials with high accuracy independent of its mechanical properties.
To improve the electrical conductivity of SiC, free Si was infiltrated into SiC bulk material without affecting the main mechanical properties of the component.
Table 1 shows the mechanical properties of SiSiC materials.
Proper DOE provides an avenue to study the effect of individual factors and their interactions [16].
Design factors: Pulse-on time; determines the duration of an electric discharge and electric discharge pulse control system.
Online since: August 2011
Authors: Subbiah Sathyan, Balasubramanian Nagarajan, Wei Jian Chee
There is no literature reported on the use and wear properties of abrasive discs during polishing.
The design involves four factors: spindle speed, feed rate of the cutting tool, depth of cut and the tilt angle at which the workpiece is fixed; all the factors are tested at two levels (see Table 1).
Depth of cut and feed rate are seen to the most most significant factors that affect the induced force on the work surface. 30 25 20 15 10 5 0 -5 60 50 40 30 20 10 0 -10 Force (N) Force (N) 0 0.5 1 1.5 2 2.5 3 0 1 2 3 4 5 6 Fig. 5. a) Normal force profile for fiber disc at 3000 rpm, 200 mm/min Feed and 1.7 mm DOC (b) Normal force profile for fiber disc at 4000 rpm, 400 mm/min Feed and 1.2 mm DOC Parameters such as spindle speed, feed rate, tilt angle and the interaction effect between feed rate and tilt angle are seem to be the most significant factors affecting surface roughness.
The properties of these materials are provided in Table 2.
El Mansori, Abrasiveness properties assessment of coated abrasives for precision belt grinding.
Online since: December 2012
Authors: Su Juan Zhang, Xiao Zhang, Qin Luo
The increasing of temperature leads the diversification of materials physical properties and causes a marked reduction in mechanical property [2].
Taking into account the effect of the material non-linearity on the mechanical properties of the PCB, the material parameters of the PCB should be set different material parameter values for changing temperatures during the analysis process.
Obviously, the non-linear factors of the PCB material parameters lead to lower natural frequency of the PCB.
The change of temperature may be the reason, which lead to the diversification of materials physical properties and cause a marked reduction in mechanical property.
Secondly, the changing of temperature causes the diversification of materials physical properties and a marked reduction in mechanical property.
Online since: November 2012
Authors: Zhan Guo Xu, Dong Ju Feng
Ultrasonic machining is not limited by electricity and chemical properties of workpiece material.
Tool wears mechanism in ultrasonic milling Tool wear is an important variable in ultrasonic machining, affecting both material removal rate and machining accuracy.
They summed up effect laws of machining parameters on the tool wear, such as static pressure, abrasive particle size, workpiece and tool material properties, tool amplitude, and so on.
In the actual process, the calculated compensation value may be different from the actual one due to the working fluid circulation status and other factors, so appropriate adjustments should be done based on actual processing conditions.
The various factors which influence on tool wear and the material removal rate in ultrasonic milling are studied, and tool wear mechanism is analyzed.
Online since: February 2011
Authors: Yi Fei Qin, Hui Qiang Sun, Zhi Ling Yan
This article puts forward a review on the research achievements of its physical and chemical properties (including bond strength between soft liner and denture base, soft liners’ elasticity, water sorption and solubility), factors influencing microbes’ adherence, prevention and cure measurements, and recent major tasks in this field and so on.
Main physical and chemical properties of soft liner Bond to denture.
Following factors will influence the bonding: Types of soft lining materials.
Besides the types of soft denture liner and treatment of it [2,13], there are some other factors influencing the elasticity: Materials ageing.
Factors influencing microbes’ adherence.
Online since: March 2020
Authors: A.K. Lakshminarayanan, K. L. Harikrishna
Dissimilar welding of copper to stainless steel using conventional welding processes usually exhibits defects such as solidification cracks, lack of fusion and deterioration in mechanical properties due to the difference in the base metal properties.
Though many parameters need to be considered, overlap ratio is one of significant factor which affects the microstructure of clad joints.
However, cladding of copper with stainless steel with good joint properties using fusion welding is always a challenging task.
Celik, "Electrical and thermal properties of the interface at diffusion bonded and soldered 304 stainless steel and copper bimetal," J.
Chen, M.Haghshenas, T.Nguyen, J.Galloway, A.P.Gerlich, Interfacial microstructure and properties of copper clad steel produced using friction stir welding versus gas metal arc welding. 104 (2015),1-9
Online since: March 2011
Authors: Jun Luo, Jun Liang
The gauge of between front and middle roller affects slub length deflection.
The precision of slub length affects fabric style formed by the slubby yarn directly.
Therefore the factors affecting output of the system are rigid of component, inertia of component and fraction of component between ,etc
The factor to decide slub length at the middle roller nip is fiction coefficient between fiber and roller, property of roving, count of roving and applied pressure of roller, etc.
The slub yarn parameter is as follows: twist factor is 422.2,yarn count is 28tex,slub length setting is 30 millimeter, slub space setting is 100 millimeter, slub scaling factor is 250%.
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