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Moreover, the physical properties such as density, porosity and mechanical properties were systematically investigated.
The effect of thermal treatment temperature ranging from 750 to 1050°C with fixed dwell-time for 4 h on phase formation, mechanical properties, and bioactivity of glass-ceramics based on the SiO2-Na2O-CaO-P2O5 system has been carried out and reported in order to study the phase evolution, and the relationship between electrical properties and bioactivity of the 45S5 bioglass.
Those prefered factors were applied to be the estimation of the heat treatment condition for all 45S5 bioglass.
The mechanical property of ceramics in the order of Vickers hardness was investigated.
The samples with heat treated at 1050°C for 4 h displayed the maximum physical and mechanical properties.

However, despite this it may be stated, at least at present, that arm pressure (P) and frictional force are the major contributing factors affecting wiping performance.
The value of the frictional force per unit length of the wiper blade (F) may be calculated according to the following equation: PF ×= µ (1) Major factors affecting the wiping performance are arm pressure (P) and frictional force (F).
These properties are similarly expected to influence the durability of the complete wiper system.
This suggests that lubrication conditions and wiping quality are correlated factors.
We have concluded in this study that the most significant factors that determine not only wiping performance, but also durability performance, are the friction coefficient and contact pressure distribution.

Their properties are suitable for reformed aggregate of ordinary Portland cement.
Both low calcium and high calcium fly ash geopolymers possess good engineering properties [6-10].
Influencing factors on the drying shrinkage The data of drying shrinkage strains of high calcium fly ash geopolymer pastes versus sodium silicate to sodium hydroxide ratio are plotted in Fig. 2.
-Effect of sodium silicate to sodium hydroxide ratio The results clearly showed that the drying shrinkage deformation was affected by the ratio of sodium silicate to sodium hydroxide ratio.
Conclusions From the results of the study, the following conclusions can be made. 1) The parameters affecting the drying shrinkage of high calcium fly ash geopolymer are weight ratio of fly ash to alkali solution, sodium silicate to sodium hydroxide ratio and concentration of sodium hydroxide. 2) The drying shrinkage deformation of high calcium fly ash geopolymer decreased with a decrease of sodium hydroxide concentration and increase of fly ash to alkali ratio.

The mechanical properties of thermal spray coatings are dependent on pore and microcrack content, particle size, and the percentage and distribution of the phases that are present.
The excellent bone connection to HA coatings, allied with good substrate mechanical properties, gives the implants sufficient strength for excellent performance in cases that require high structural strength to support high loads and/or applications needing rapid implant bioadhesion [1].
Hydroxyapatite is a ceramic material, and to better understand its mechanical properties when used in real medical applications, fracture mechanics must be utilized.
These factors have provided the incentive for studies to evaluate the possibility of using the scratch test in the evaluation of thick ceramic and polymeric coatings produced by thermal spray process [5, 6 and 7].
Holmberg, K. and Matthews, A., "Coatings Tribology Properties, Techniques and Applications in Surface Engineering", Tribology series 28, Elsevier, Amsterdam London New York Tokyo, (1994). 12.

Combining the factors of human and object in the design, this paper puts forward the safety design methods of electromechanical products, including designing the reliable products system, preventing incorrect operation design, creating the safety and pleasant interaction mode and the color and so on.
As industrial designers, we should try our best to avoid the unsafe factors relating to mechanism in our design.
The Safety of Electromechanical Products The safety of the electromechanical devices refers to the situation in which people are physically and psychologically protected from extraneous factors while using the devices.
To achieve man-machine overall safety by considering the human physiological and psychological factors and product function from the angle of human engineering product safety design.
Electromechanical products should be designed based on the ergonomic principles; it is with the person this, full consideration of physiological and psychological factors, to reduce as far as possible to the physical and mental burden of aggravating factors, the guarantor to safe, comfortable operation, the maximum limit to reduce the working intensity and tense, fear, and reducing human error, guarantee the safety.

The homogeneity of plasma surface modification of large-area thin film materials has always been paid close attention, and it is also the key factor affecting the industrialized applications of the technique.
The presence of gas will affect the exchange efficiency of ion and molecular in nozzle area.
Conclusion The transport property of discharge gas under vacuum is investigated by adopting the combination of numerical simulation of fluid distribution, pipe flow theory and Fluent simulation design.
Alkali Absorption Property of Polypropylene Non-woven Fabrics Surface Modified by Hollow Cathode Remote Plasma Polymerization [J].
Materials for Mechanical Engineering, 2011, 35(8):70-74.

The dynamic properties of ball screw feed system can be predicted at the design stage by establishment of dynamics model and dynamic analysis carried out by simulation results.
Literature [3] analyzed the composite stiffness of CNC machine tools, made the theoretical calculation of the errors caused by stiffness, and proposed measures for improvement, but the influence of stiffness on dynamic and static properties of system is not researched in depth.
Ignore the influence of non-linear factors such as clearance and friction on system performance.
Model description of the system does not take into account nonlinear friction factors, with certain limitations, and the higher plus can easily lead to system instability [9].
Therefore, the next focus of the study is how to establish a comprehensive mathematical model accurately of mechanical transmission components including friction, reverse gap and other non-linear factors, and conduct further study of error compensation.

If the assumption of the highest values of acoustical or mechanical impedance of the space boundaries (damping properties of boundaries) is made, the modal coupling can be neglected.
The shape of the space together with properties of space boundaries influences the distribution of the field.
In the case of optimization or generally in a control of the acoustic field inside of an enclosure, many factors should be considered e.g. area of boundaries, their configuration, location, the acoustic properties of the materials, which can cover the walls, sound/noise source position.
It is assumed, that damping in the system comes from a boundaries’ properties, not from the medium.
(15) In this problem, the total number of designs variable finally depends on two factors.

The Additional Side Force on the Force Transducer in the Combinatorial Load Cell Tieping Wei1,a, Xiaoxiang Yang1,b, Jinhui Yao2,c , Hang Xu2,d 1College of Mechanical Engineering and Automation，Fuzhou University, China 2Fujian Province Institute of Metrology, Fuzhou, China awtp12312@sina.com,byangxx@fzu.edu.cn,cyaojinhui2000@126.com, dfjjl-xh@126.com Keywords: combinatorial load cell; spherical plain thrust bearing; rotation effect; additional side force Abstract: By the reason of the additional side force acting on the force transducers affecting the rotation effect of the combinatorial load cell，the paper describes the effect of the spherical plain thrust bearing’s structure on the additional side force.
Also the difference between the three force signals from the combinatorial force transducer revealed the asymmetric properties of a deadweight force standard machine.
Therefore, the friction coefficient is one of factors which might affect the force transfer in the combinatorial load cell.

Fractal geometry mainly researches the uncertainty factors of nature, while the idealization of natural conditions is the foundation to constitute all rock mechanics analysis and geotechnical engineering design.
Fractal model method: The appear of irregularity complex phenomena of any structure(systems), is caused by the environmental conditionit of its physical, mechanical and its microstructure factors, while investigated from mathematics, this is just a kind of geometry.
Microstructure fractal of soil: The engineering properties of soil and its material composition, microstructure are closely related.
The granularity composition often play a larger part in studying material composition, and determines the physical and mechanical properties of infiltration, deformation, intensity of soil, thus granularity(particle gradation) is often as the main index of soil engineering classification.
Fractal dimension on the joint surface: In rockmass mechanics, the morphology characteristic of joint surface is the important factors to control the rockmass mechanics behaviour, formerly it is charactered by the average wavilness angle and surface roughness coefficient JRC of joint surface.