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These materials have special properties and usage.
The alloy properties could be influenced by this phenomenon extensively.
The electromagnetic simulated microgravity is to place metal melt in electromagnetic fields which are perpendicular to each other, and electromagnetic volume force excited from the liquid will have effect on every volume unit of materials which could compensate the gravity and reduce  segregation and weight loss of lithium during alloy smelting. [16] In the aluminium-lithium alloy, the lithium content directly affects the mechanical properties of the alloy.
The consumption of lithium in smelting process is mainly affected by the following two factors: (1) Interaction between lithium and crucible.
The mechanical properties such as fracture toughness and elastic modulus have been improved by reducing the weight of aluminium-lithium alloy.

This is showing the types of grain distributions which has good mechanical properties.
Whereas Sumitomo Special Metals Japan uses sintering techniques [1].Sintered NdFeB material requires very careful control of the sintering temperature and microstructure to achieve the magnetic properties required at the end of the sintered magnet [3,4].The final magnetic coercivity will be affected by grain size and material density [5-7].
In this work, an understanding in producing sintered using SPS and their relation to density, phase composition, and magnetic properties are investigated. 2.
Summary of data on the magnetic properties, density, and elements contained.
Seebacher et al., Grain-size dependent demagnetizing factors in permanent magnets, J.

The KD2 Pro, fully portable thermal properties analyser, was used to measure thermal conductivity of nanofluids.
Murshed et al [3] observed 33% enhancement in thermal conductivity at 5% volume concentration with water as a base fluid.Utomo et al [4] compared measured thermal property values with theoretical models.
The important factors affecting the Nanofluids thermal conductivity are 1) Brownian motion2) Nanolayer3) Nanoclusters 4) Thermophoresis5) Specific Surface Area of Nanoparticles 6) pH of Nanofluid.Rubio et al [9] found negligible enchancement of viscosity in SiO2, Al2O3 and TiO2 suspensions at different pH and solid volume fractions.
Eastman, Enhancing Thermal Conductivity of Fluids with Nanoparticles, ASME International Mechanical Engineering Congress & Exposition.

The main purpose of the critical speed analysis is to determine the critical speed of the rotor, adjust the critical speed according to the experience or relevant technical regulations, and make it properly away from mechanical work speed, so as to get reliable design The Design of Ultra-high Speed Rotary System Three dimensional model diagram of the high speed friction and wear test system is shown in Fig.1.
When high speed wheel rotates, because of the factor of the rotary table mass imbalance, the centrifugal force generated will lead to occur corresponding bending of rotary system axis.
The calculation method of rotor critical speed directly affects the calculation accuracy of each order critical speed, so we should try to choose appropriate calculation method to make the mathematical model and boundary conditions accord with the actual situation as far as possible [6].
Fig.5 Shaft section mechanical analysis Conclusion In the critical speed calculation process using the transfer matrix method in the past, with the addition in spreadsheet frequency ω, it will make the calculated precision below, the reason is that certain factors in the transfer matrix have relation with ω2, it will occur the subtraction between the two close to the value in the calculation of the high-end frequencies and mode shapes, greatly reduces the computational accuracy.
A New Method for Evaluation of Mechanical Properties of Sealing Coating[J].

Statistics show that the noises by cars even have accounted for 85% of the city noise, noises have become one of the important sources of pollution of environment and seriously affect the living environment of human beings.
As a result, the noises of the vane pump have two parts with mechanical and fluid noise.
According to the requirements of vane pump low noise stator curve should have good mechanical properties and no vibration effect, at the same time, should make the flow pulsation as small as possible.
(4) The stator curve is widely regarded as a key factor in the study of the automotive steering vane pump noise.
Stator curve characteristics of blade and collision are important reasons of mechanical noise

Oil Film Temperature Field Simulation of Hydrostatic Center Rack of Heavy-duty Horizontal Boring Lathe Junpeng Shaoa, Chong Lib , Xiaoqiu Xuc , Xiaodong Yud , Bo Wue , Chao Yinf College of Mechanical and Power Engineering, Harbin University of Science and Technology Harbin Heilongjiang150080, China asjp566@hrbust.edu.cn, btianhailanlan123@163.com, chlgxxq@163.com, dhustyuxiaodong@163.com, ewbdoctor@sina.com, f115670521@163.com Keywords: Horizontal boring lathe; Hydrostatic center rack; Temperature field; Numerical simulation.
Firstly, physical model and Material Properties and boundary conditions are defined in ANSYS CFX-Pre software.
So the revolving speed is the important factor affecting the oil temperature.
References [1] Yanqin Zhang, Junpeng Shao, Shiqian Ni, Numerical Simulation of Temperature Field in Large Size Hydrostatic Bearings, China Mechanical Engineering, 2006, pp.563-565

Introduction Biomaterial science stressed on biocompatibility and progressive interaction between composite materials and cells with desired properties for various applications [1].
Poly-lactic acid (PLA) is a common form of polyester polymer exhibits vital properties of polymeric biomaterial such as biodegradable, biocompatible and absorbable [2].
BG is known to have inherent properties to stimulate cell attachment, proliferation and osteoinduction [14].
Ali, "Study the mechanical and thermal properties of biodegradable polylactic acid/poly ethylene glycol nanocomposites" International Journal of Application in Engineering of Management, vol. 3, Jan 2014
Boccaccini, "Mechanical properties of biodegradable polymer sutures coated with bioactive glass," Journal of Materials Science: Materials in Medicine, vol. 13, pp. 843-848, September 01 2002

The main parameters that affect the protective ability are initial compressive yield stress and fracture stress.
Table 1 shows the mechanical properties of nonstrengthened and strengthened borosilicate glass plates [2], [3].
It was found that the heat treatment of glass strengthened its static mechanical properties, such as surface hardness and fracture toughness, by up to ~20%.
Mechanical properties and composition of borosilicate glass used as bulletproof glass material Figure 1 shows the experimental setup for the high-velocity impact tests of a glass plate.
Table 2 Material parameters of borosilicate glass used as bulletproof glass material Property Unit Initial guess Reference Borosilicate glass (Nonstrengthened) Borosilicate crystallized glass (Strengthened) Compressive fracture parameters Initial yield stress, Yi GPa 0.5–2.1 [2,3] 1.18 1.42 Strain rate dependency, B - 0.012 Parameter study 0.012 0.012 Fracture EQPS - 0.033 Parameter study 0.033 0.033 Slope, λ - 0.5–3.0 [6,7,9] 0.75 0.75 Degradation factor, S - 0.75 [6,7,9] 2.5 2.5 Tensile fracture parameters Fracture stress, σfr GPa 0.02–0.04 [1,2,3] 0.029 0.031 Fracture energy, Gc GPa.mm 1.0e-6–1.0e-5 [2] 8.89e-6 18.15e-6 Initial crack length, a mm 0.1 - 0.1 0.1 Frictions parameters Fraction coefficient, f - 0.2 Parameter study 0.2 0.2 Erosion parameters EQPS 0.2–0.3 [6,7,11] 0.3 0.3 Two parameters were found to strongly influence the glass strength: the initial yield stress in the compressive fracture and the fracture stress in the tensile fracture.

It has been found that these experimental studies took a long time, due to many involved factors such as the electromagnetic gap, electric current, materials, etc. [2].
The electromagnetic force is considered to be a key factor in electromagnetic analysis.
In the finite element analysis, soft magnetic materials, which have the properties of high magnetic conductivity and low coercive force, should be used.
To realize a faster response, At least two factors should be considered in choice of soft magnetic materials: the initial permeability and electrical resistivity.The higher a initial permeability , the better the material performance is.
As seen in Eq. (6), the current excitation I also affects on the magnetic force.

Radiation Induced Effects on Properties of Semiconducting Nanomaterials S.K.
Irradiation effect can change the morphology of the materials in a controlled manner and tailor their mechanical, structural, optical and electrical properties.
Thus, harnessing irradiation as a tool for improving the properties of nanomaterials, requires full understanding of the defect production in nanoscale systems under irradiation, damage accumulation and annealing, as well as the knowledge of how the defects affect the material properties.
Ion implantation is a crucial method for dopant incorporation that produces lattice disorder which is an important factor affecting the device performance.
Moreover, under certain conditions, the disorderliness and crystallinity of the material is changed on account of its irradiation with particular energy beam which in turn may affect the size of the particle and related material properties.