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Introduction Sapphire has been widely used due to its excellent optical and mechanical properties, high strength, hardness, wear resistance, and excellent insulation properties [1].
The diamond concentration affects the efficiency and life of the bit.
Copper can be combined with tin, zinc, manganese, nickel and titanium to form alloy with excellent properties.
(2) This article focuses on the principles and methods of formula design for sapphire bit to improve the properties of matrix.
Yang, Research on the properties and application of sapphire materials, Silicon Valley.21(2014)139-141

This smart material have many kind of polycrystalline combinations, but the Nickel-Titanium (NiTi)is considered to have the most beneficial properties to be used as an actuator [2] among other actuators such as electric motor, electromagnet, pneumatic cylinders or hydraulic.
Even though this is acceptable if the weight did not exceed the maximum capacity, it will affect the performance of the actuator.
This situation is also related to time-joint spasticity issues as patient’s finger will become harder to move by time which can be interpreted as a weight factor for the actuator.
However, using current-supplied heating for the SMA wire will affect the energy efficiency especially when battery is intended to be used as a portable power source solution.
The actuation system and mechanical parts works well to provide flexion and extension for the exoskeleton prototype.

The disadvantage of the SHEV is the lower overall efficiency than the internal combustion engine vehicle in the heat - electricity - mechanical energy conversion process.
A PHEV does not lose energy as a SHEV in the heat - elctricity - mechanical energy conversion process, its dynamic properties are more near the internal combustion engine vehicle.
When the brake pedal signal continues to increase, the original mechanical braking systems have also begun work to meet the safety needs.
It has control torque under zero-speed, so high-speed operation can be done, and power factor of the power net can be improved [6], etc.
Two Factors Affecting Development of Automobile Technology--Environment and Energy [J].

AISI 1045 steel is known for its good weldability, machinability, high strength and impact properties in both the normalized and hot rolled condition.
Table 1 shows mechanical properties AISI 1045 steelPhysical PropertiesMechanical Properties Machining AISI 1045 steel has good machinability in normalized as well as the hot rolled condition.
Table 1 Mechanical properties of AISI 1045 steel MECHANICAL PROPERTIES METRIC Hardness, Brinell 163 BHN Tensile Strength, Ultimate 565 MPa Tensile Strength, Yield 310 MPa Modulus of Elasticity (Typical for steel) 200 GPa Bulk Modulus (Typical for steel) 140 GPa Physical Properties Mechanical Properties Machining AISI 1045 steel has good machinability in normalized as well as the hot rolled condition.
It was found that friction modelling affects thrust force and temperature more than cutting force.
One of the most important factors to influence the prediction of strain is the material model that is being used.

Note that the Schmid factors for () [111] and (010) [001] slip systems are 0.5 at A and B orientations, respectively.
Yasuda, Mechanical properties and hardening mechanism of Fe-Al-Ni single crystals containing NiAl precipitates, Acta Mater. 61 (2013) 1716-1725
Pineau, Room temperature tensile properties of Fe-19wt.
Sauthoff, The strengthening effect of (Ni,Fe)Al precipitates on the mechanical properties at high temperatures of ferritic Fe-Al-Ni-Cr alloys, Intermetallics 13 (2005) 1263-1268
Miracle, The physical and mechanical properties of NiAl, Acta Metall.

The main objective of the present work involved the study of the inhibitive properties of natural product as spearmint plant extract as a safety and an environmentally friendly corrosion inhibitor for low carbon steel in (3.5% NaCl) solution.
The effectiveness, or corrosion inhibition efficiency of a corrosion inhibitors is a function of many factors including but not limited to: fluid composition, quantity of water, and flow regime.
Where chemical analysis was performed using a spectral analysis of metals in the General Company for Mechanical Industries in Alexandria.
Table (1): Illustrates the percentages of the chemical composition of the carbon steel models used in research C % V % Ni % Mn % Fe % Rem. 0.25 0.19 1.45 97.17 Sample Preparation.Specimens were prepared as follows: 1- Sample Preparation. 2- Drying and washing sample . 3- Mechanical preparation of sample (polishing, grinding and cutting).
All of these compounds have properties of inhibition and this is consistent with the findings of other researchers.

Furthermore, the possibility of improving manufacturing technologies of new substances with improved physicochemical properties in connection with the maintenance of their cleanliness is also an urgent task.
Under the influence of an electric field the displacement of the molecules is caused in the direction of greater field strength, due to the action of ponderomotive forces, which are forces of mechanical nature.
This is due to the emergence of mechanical motion in liquid dielectrics under the influence of an inhomogeneous electric field.
Conclusion When we consider the processes occurring under the action of electric field in dielectric liquids, it is necessary to consider such factors as: the physico-chemical nature of fluids, properties of electric field, properties of hydrostatic and hydrodynamic fields.
In addition, the dielectric fluid has a complex structure, which forms the topology of the electric field and affects its distribution in space.

Measures factor adopted is as followed.
Where n is resource number, m resource’s property number.
These properties contain several main data of manufacturing service such as business function, business process, and quality of service and so on. 500 different particle size of Req requests are randomly generated.
In the future, the further research on performance evaluation factors’ selection and perfecting evaluation system will be done.
China Mechanical Engineering, 2012, 23 (15):1818-1824

Stress Analysis and fatigue life estimation of Bridge Rubber Bearing Li Chunshu a, Yuan Guangming b , Feng Haoc School of Mechanical Engineering, Hebei University of Technology, Tianjin, China achunshuli@126.com, bygming@hebut.edu, cfhhaohao@126.com Keywords: Bridge Rubber Bearing ; Stress Analysis; Finite Element ; Fatigue Life Abstract.
The rubber bearing take an important effect on the normal load and security of bridge of its mechanical properties and reliability.
Simply supported bridge compared to continuous beam bridge in the same span conditions rubber bearing will produce greater relative displacement, and the properties of rubber bearing also affect the dynamic response of the bridge.
Shape factor of the plate rubber bearing in highway bridges is generally from 5 to 12 in[8].When the shape factor S>20,the shear stress of the finite element consistent with the incompressible elastic force theory and when S<20,the rubber layer and the steel plate attached at the edge of shear stress concentration phenomenon exists.
The following is amplification coefficient and shape factor as a function of type: (2) where K is amplification coefficient, S is shape factor.

Introduction Hydraulic cylinder is the hydraulic actuator which changes hydraulic energy into reciprocating motion or rotational motion mechanical energy.
Therefore, the quality of raw materials and processing directly affect hydraulic cylinder’s qualification rate, lifetime and reliability.
Through the above analysis about the frequency influence to ultrasonic detection and the different frequency probes practical testing experiments of hydraulic cylinder, observed in about 5MHz frequency, the echo of cylinder barrel and the details of defect echo performs very well, so comprehensive consider all aspects of the factors, we choice the frequency is 5MHz.
From the point of view of sound delivery, the couplant should have following properties: 1.
Comprehensive consider all factors, we select water as the couplant in the process of hydraulic cylinder ultrasonic flaw detection.