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There are two important factors affecting the application of titanium alloys.
Therefore, success in the cutting (such as turning, milling, drilling and so on.) of titanium alloys depends largely on the overcoming of the principal problems of tool wear associated with the inherent properties of these materials, as discussed below[1, 2, 3, 4] : (1) The compressive stresses on the delicate cutting edge are very high because of a much smaller contact area on the rake face of the tool than when cutting most engineering metals
It consisted of nine tests with there different variable factors and three different experimental condition levels.
Influence of factors on tool life.
Fig. 3 Relation between tool life and cutting speed Fig. 4 Relation between tool life and feed rate Fig. 5 Relation between tool life and depth of cut According to Fig. 3, 4 and 5, all cutting parameters discussed had great influence on tool life, and when these factors increased, the tool life reduced quickly.

It was found that maximum chloride penetration depth was affected by the cover depth and the deformation applied to the test specimen.
Table 1 Mechanical and geometrical properties of PE fiber Diameter (mm) Length (mm) Density (g/cm3) Tensile strength (GPa) Young’s modulus (GPa) 0.012 12 0.97 2.6 88 Table 2 Mix proportions of SHCC Mixture W/C (%) Unit mass (kg/m3) W C Lpa S SPb Vis.c PE fiber PE-0 30 378 1260 0 395d 28.2 0.89 9.7 PE-25 40 378 945 315 365 d 25.9 0.67 9.7 NM 55 273 496 0 1229 e 0 0 0 a: Limestone powder, b: High range water reducing agent, c: Viscosity-enhancing agent d: Quartz sand, e: River sand The test specimens are shown in Fig. 1.
The chloride penetrated into the specimens through the cracks at a comparatively early stage of the test, so the chloride penetration depth is not affected by the tightness of mortar matrix structure but by the crack properties.
Summarizing the above, it is considered that the factors that affect the maximum depth of chloride penetration are the cover and the deformation.
Rokugo, Mechanical performance of corroded RC member repaired by HPFRCC patching, Construction and Building Materials. 39 (2013) 139-147

Principle and composition of piezoelectric ceramic voltage transducer Piezoelectric ceramic is not only a kind of functional ceramic materials which can convert electrical energy into mechanical energy, but also a special materials having inverse piezoelectric effect.
The optical lever schematic diagram is shown in Fig.1 (C) , the basic principle block diagram of the device is shown in Fig.2, main properties of common piezoelectric ceramics are shown as in Tab.1.
Fig.2 The basic principles block diagram of piezoelectric ceramic electronic voltage transducer Tab.1 Main properties of common piezoelectric ceramics Piezoelectric material Performance BaTiO3 PZT-4 PZT-5 PZT-8 Piezoelectric coefficient (pC/N) d15=260 d31=-78 d33=190 d15≈{TTP}8776 410 d31=-100 d33=230 d15≈{TTP}8776 670 d31=-185 d33=600 d15=330 d31=-90 d33=200 Curie temperature (℃) 115 310 260 300 Modulus of elasticity (109N/m2) 110 83.3 117 123 Mechanical quality factor 300 ≥500 80 ≥800 Maximum allowable temperature (℃) 80 250 250 Maximum allowable moisture (%) 100 100 100 Deformation measurement principle Since the deformation of piezoelectric ceramics is small, the conventional methods is difficult to measure it accurately.
Known by the piezoelectric effect, these two forces will affect the amplitude of piezoelectric ceramics, and the charge distribution of ceramic surface, which make piezoelectric ceramics produce additional deformation, and thus produce some measurement error.
The proposed measurement method can effectively measure the deformation of piezoelectric ceramic stack, and improve the piezoelectric ceramic stack deformation measure accuracy through the clever design of mechanical structure so as to improve voltage measurement accuracy.

On this basis, calculation error of steel ball speed is modified, and impact angle, structure parameters, material parameters and other factors get analyzed by numeric simulation.
This having very important significance provides theoretic basis to optimize structure of re-circulating mechanism and improve properties of ball screw.
Numeric Simulation of All Impact Factors Reducing the impact force of ball to return tube is a important method to improve property of ball screw.
Seen from model stated before, there are many influence factors, such as velocity, material parameters, structural parameters, etc.
Above-mentioned factors are respectively discussed by numeric simulation.

Carbon fiber, having good mechanical, electrical, magnetic and thermal properties, is a kind of excellent modification component for cement-based composites.
Electrical properties of the composites do not from simple mixing effect, but the jointing effect.
The electrical properties of the composites reflect situ characteristics of component materials.
As a jointing effect, the electrical properties of the composites will be affected by many factors, such as microscopic heterogeneity, fabrication process and some other random factors[5-7].
Conductive mechanism of cement matrix Electrical properties of cement matrix.

Introduction Nowadays, the engineering ceramics are widely used for their excellent physical and chemical properties [1].
The surface topography is the residual micro-geometry with various type and size on the surface of the workpiece due to a good many factors in processing.
It is an important evaluation indicator of the surface machining quality, which not only directly affects the assembly property, stability of precision, wear resistance, corrosion resistance and sealing property of the part, but also has a great impact on the working performance and service performance of the entire equipment.
According to the mechanical properties of material, the fracture toughness of ZrO2 ceramics is greater, so the plastic deformation is main material removal mode in granular abrasive lapping and good surface quality can be obtained.
Zhao: Modern grinding technology (Mechanical Industry Press, China 2004)

The physical-mechanical properties of a cemented carbide depend on the properties of its components and technological accuracy.
The most important parameters affecting the properties are: the chemical composition of the binder, the internal stress values, and the alloy structure.
Research Methods and Results As temperature of the contact areas of the tool is the major factor influencing the cutting tool wear resistance, the thermophysical properties of the tool influencing this temperature will, thus, influence on that.
To estimate the degree of thermal diffusivity affect the cutting temperature we carried out computer modeling of the cutting tool heating and calculated the temperatures on its front and back surfaces for different thermophysical properties of the tool material.
The results of the modeling showed that the thermophysical properties of the tool material are closely related to the temperature of the tool contact areas.

Technological properties such as water absorption, linear shrinkage and flexural strength were also evaluated.
Another important factor, which may significantly affect the properties and microstructure of ceramic tiles, is the processing technique.
Then, the firing condition will be the only established procedure, which makes the product to attend the desired technological properties and be easily processed with the lowest possible cost.
The fired technological properties evaluated were: water absorption, linear shrinkage and flexural strength.
To reach the required values for the technological properties, one should reformulate the body composition increasing the flux content and decreasing the loss on ignition.

Systematic Evaluation of Influence of Process Parameters on Surface Texture in Flank Milling Yan Zhang 1,a, Xiao-Jin Wan2 1School of Foreign Languages, Wuhan University of Technology, Wuhan 430070, China 2Hubei Key Laboratory of Advanced Technology of Automotive Parts, School of Automotive Engineering Wuhan University of Technology, Wuhan 430070, PR China aswallowgarden@163.com Keywords: Flank milling; Surface texture; Machining accuracy Abstract .Machined surface texture is a very critical factor since it directly affects the surface quality and part mechanical behavior.
Tool runout is considered as a factor that has a significant influence on the topography of milled surfaces.
Formulation of problem Milling surface Flat end milling cutter (a)Schematic diagram of flank milling (b) A actual multiple frame workpiece in flank milling Fig.1 Coordinate frame configuration plane milling in machining process First, consider a flank milling illustrated in Fig. 1, under the premise of disregarding the influence of material properties of the workpiece and the tool, and vibration of the machine system, the machined surface texture mainly depends on the tool geometry, tool path, and spindle run-out.
These machining parameters and geometric property parameters are all included in equations set Eq. (1).
In addition, it is noted that the run-out is important factor influencing the number of gutter strips and the roughness values.

Micro-particles of recycled rubber affect the mechanical qualities of polymer in which they are dispersed.
Epoxy resin properties can be changed by adding appropriate types of fillers.
They reached an improvement of failure properties of epoxy resins.
Subramaniyan et al. [6] used rubber particles for improving the mechanical properties of polyurethane foam filled with Kenaf fibres.
Garcia et al. [9] dealt with the influence of a different particle size of waste rubber on the mechanical properties of composite arising by compressing.