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So many scholar at home and abroad study influence of technological parameters in laser-cutting, which include laser power, cutting speed, focus position and properties of material[2-7].
Material properties changed with temperature, which is the integral value in temperature interval
According to findings of F.P.Incropera and D.P.Dewitt[11], we get the fitting curve (as shown in Equation1 and 2) on the physical properties of stainless steel plate at different temperatures by the software of MATLAB.
Proceedings of the Institution of Mechanical Engineers.1997 [4]Joachim Berkmanns, Facts About Laser Technology.
Chinese Journal of mechanical engineering.2001.5:72-77 [6]William M.

Automobile,as a big consumer of energy ,has been borne aloft .Requirement of automobile ont only seek for property and comfort,but also make demand of energy consumption and environmental protection.
As for the fuel cell vehicle, there are many technical problems to be solved in the technical level.the development may also be affected by certain obstacles.
On the other hand, as a new type of car, Its repair and maintenance costs are higher, And the repairs and maintenance site is lacking at present, These factors obstruct consumers to purchase the new energy automotive, ● in the integration of resources terms, China's new energy automobile development research mostly fight the enemy separately, enterprises have no contact and communication, Industry Association is not to act as a broker, Lead to many enterprises have to do something that other people have done, this action is time-consuming and wasted resources seriously. therefore, how to motivate effectively market resources allocation function, allocate reasonably new energy vehicle market resources and production factors, is a important task we have to face.
The quantity must be accurate, to ensure the engine output power, sufficient burning of fuel, and reduce exhaust emissions, Realization process also needs sensor to monitor factors affect ignition, feedback regulation, so as to achieve the optimum ignition timing
China mechanical and electrical industry,2001(12):44-45.

Collagen is a material that can be applied to the scaffold and has been used extensively in tissue engineering techniques for superior biocompatibility and biodegradability properties [9].
Chitosan is a natural biopolymer that has biocompatible properties, biodegradable and mechanical strength which can be used as a wound closure so that the substance is able to act as drug delivery and wound healing [8].
In addition, the presence of AV also affected degradation.
In addition, the existence of AV also affect the degradation.
Properties of Collagen/Chitosan Scaffolds for Skin Tissue Engineering.

Take a little more, died it at the 100 °C, 30 minutes drying is necessary. 2.3 Sample Detection The use of high-resolution scanning electron microscope can observe superfine wool surface structure along with functional materials superfine wool in the distribution of the surface; The use of Fourier transform infrared / Raman spectrometer infrared absorption spectrometry; The use of lasers for the fineness of superfine wool fineness change detection; Test according to the state's wool textile products for Quality Supervision and Inspection Center (GB - T4711-1984) and ITS testing standards for mechanical properties testing; Test according to the Chinese Academy of Sciences Institute of Physical and Chemical Technology Center of antibacterial materials testing standards antibacterial performance testing. 3 Results and Discussion 3.1 Treated Superfine Wool Fineness Changes Fineness is the most important factor affecting superfine wool price.
CMC structures exist between cells in wool, and they are distributed in a network in the entire structure which function as a bridge connecting these wool cells, thus play a vital role in the mechanical properties of wool [8] .
So from a picture perspective the thickness and density are reduced, and characterization of structural changes could lead to friction characteristics' change, resulting in the effect of preventing shrink; thus reducing fabric slip in the fiber, and the anti-pilling properties will increase as well.
These properties enabled the wool fiber to take on the characteristics of cashmere and made a new breakthrough in the application of personal wearing.
Combining the two, fiber antibacterial properties will be greatly improved.

It is known that fatigue life is an import property and it affects the service life and security of devices strongly, so that understanding and obtaining right residual stress on machined surface is an important aspect of machining quality.
It is mainly induced by the mechanical, thermal and chemical impacts during the machining process.
These impacts are acting togeter with overlapping effects on mechanical parts.
This is because the production of residual stress is connected with the factors, such as the degree of unrecoverable plastic deformation on the outside layer material of workpiece, the cutting temperature, etc.
(2) Experimental results show that pre-stress hard turning can get a fine surface quality of mechanical part.

Table 1.Geometric Data of Constant Force Spring Spring Dimension Width, b 26 mm Thickness, t 3 mm Natural Radius,rn 8.5 mm Bigger Size Mandrel, r3 37.5 mm Smaller Size Mandrel, 8.5 mm Design Torque.The CFSis made of X2CrNiMo17-12-12 which is in the duplex stainless steel group [2].Some important mechanical properties is shown in Table 2.
Table 2Mechanical Properties of X2CrNiMo17-12-12* Properties Value Modulus Of Elasticity 190000 Mpa Shear Modulus 7900 Mpa Tensile Strength 650 Mpa Yield Strength 520 Mpa *Adapted from SolidWorks material properties From previous linkage analysis conducted using SolidWorks, the maximum torque acted on the CFS is 62,672 Nmm with 180 mm deflection and the minimum torque is 30,068 Nmm with 80 mm deflection [2].In addition, previous analytical analysis have calculated the value of maximum cycles to be,Nmax =4,185 cycles [2].
In order to improve the investigation of failure characteristics on the CFS on the counterweight balancing mechanism, a few factors must be considered.
Firstly, the study is conducted basedonan assumption that the CFSis analyzed as a solid spring pack which may have affected the result of the simulation.

Implementation of Decision-making Model System for Autonomous Vehicles in Virtual Environment Yanfei Liang 1,2,a , Hanwu He 1,b, Detao Zheng 1,c and Xin Chen1,d 1 Faculty of Electro-Mechanical Engineering, Guang Dong University of Technology, 510090, China 2Mechatronics & Information Engineering School, Foshan University, 528000, China a liangyanfei@tsinghua.org.cn, b hwhe@gdut.edu.cn, cdtzheng@gdhed.edu.cn, d chenx@gdut.edu.cn Keywords: Virtual reality, Autonomous vehicles, Decision-making, Path planning Abstract.
It was studied the influence of driver's aggressiveness on lane-changed performance through considering human factors, and several longitudinal driving modes were classified and discussed.
The autonomous vehicles based on this system can be used as the vehicles in simulators and help to design traffic or help to verify the performance of vehicles. � Introduction Autonomous vehicles play a key role in a driving simulator, and driving simulator is an important tool in research and design of vehicles, study of traffic properties and driving training.
Framework of the System The framework of the system includes the environment model, the human factor models, the dynamics model, the behavior modes of the autonomous vehicles, path planning and tracking control, etc, see Fig.1.
Drivers' temperament and stimulation from outside also affect drivers' reaction time.

The vibration characteristics depend on a number of factors such as material properties and dimensions of a plate, crack lengths, positions and directions of a crack, and boundary conditions.
The other subject is the local buckling caused by the compressive in-plane stress around the crack that affects on the vibration characteristics.
This permits to rewrite the stiffness matrix as ]_refun K© , in which ]_refuK is a constant matrix determined by the in-plane stress distribution corresponding to some reference tensile load, refP , and n is an increase factor of load.
Vibration characteristics of a cracked plate subjected to tension is predominantly affected by the in-plane stress distribution around a crack.
The suitable number N can be easily determined by checking convergence of the stress intensity factor that can be simultaneously calculated in the stress analysis.

However, the incorporation of composite components in actual service requires good understanding of the processing related structure and its influence on wear and friction properties.
The compatibility of the sliding pair (material composition, compatibility, hardness and chemical activity) or surface conditions (roughness, way of mechanical processing, surface energy, …) strongly influences the wear particle moveability and adhesion to one of the contact bodies.
This means that the orientation of the fibers will play an important extra factor in the wear mechanisms due to the orientation.
A reason why the 45° orientation has the highest coefficient of friction might be due to the fact the in both parallel and perpendicular cases, the pin slides parallel with or over the fibres, while in the 45° case, there is a combined effect of both, parallel and sliding over, resulting in an extra friction factor from the glass-glass couple.
-M., "The friction and wear characteristics of nanometer SiC and PTFE filled PEEK", Wear 243, 140-146 (2000) [15] Lancaster J.K., "Dry bearings: a survey of materials and factors affecting their performance", Tribology 6, 219-251 (1973) [16] Briscoe B.J. and Tabor, D., Fundamentals of Tribology, (Suh and Saka, Cambridge, 1980) 733-758 [17] Yust, C.S., Leitnaker J.M. and Devore C.E., "Wear of an alumina-silicon carbide whisker composite", Wear 122, 151-164 (1988) [18] J.

In the presence of an electric field, the rheological properties of ER fluid dramatically change.
From Eq.2, it is clear that the average size of grinding wheel, rotation speed, grinding depth, and other parameters are important factors which affect optic glass ductile grinding.
It follows from present experimental results that the rotation speed of cone-like tool, the initial clearance between workpiece and tool, and characteristics of abrasive particles are the most important factors that lead to different material removal modes.
Conclusions Experimental study has been carried out to analyze the machining effect affected by some processing parameters.
Lu: The Mechanical Engineer, (2001) No.2.