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To date, many investigations have focused on the microstructure and mechanical property of ultrafine-grained materials subjected to ECAP, however, the study on corrosion property is relatively rare.
The study on corrosion resistance of ECAP-processed materials is complex and challenging, because the corrosion resistance will be affected by many factors induced by ECAP, including grain size alteration, changes in dislocation density, increased grain boundary density, particle fragmentation, residual stress, development of texture, as well as different electrolytes [23].
By increasing ECAP passes and annealing, above-mentioned factors will change, thus the corrosion resistance of materials will be affected.
In that way, grain size is an important factor for improving corrosion resistance.

The long-term operation, tooth wear, bites and deformation, dynamic meshing backlash is too large, poor engagement will produce vibration, shock and noise, these are the main factors of mechanical transmission noise. 1.1 Noise species Noise of gear transmission system can be divided into acceleration noise and ring noise.
While the gears need to transfer small load, we should choose small modulus as possible, because the machining error at this time are the main influence factors; and small modulus usually with more teeth, gear coefficient increases, which can improve the stability of the transmission, noise reduction
Therefore, reasonable design of box body include Structure and vibrational properties will help to reduce the noise of gear system.
Beijing: Mechanical Industry Press, 1998 [2] Zhao Ning, Wei Fang, Hui Guang Lin, Kang Shipeng.
Beijing: Mechanical Industry Press, 1986

For optical surfaces, the surfaces roughness is an important indicators; it has a lasting effect on optical, mechanical and electronic properties.
Since the angle of incidence is changeable and the substrate materials have different properties, and will vary with the angle and the substrate materials.
Although Sigmund theory has considered many factors, it is appropriate for the amorphous and polycrystalline materials.
and are the main parameters because they will directly affect the surface quality.
is one controlling factor for direction of ripple when the . 5.

The periodic change in cutting force and thickness of cut creates impact and vibration, which affects directly machining quality, machining efficiency, and the reliability of high speed face milling cutter [1-3].
According to the property of the Dirac Function, Fx(t) and Fy(t) are transformed by Fourier Transform, the frequency spectrum functions of dynamic cutting forces in working plane are as follows dte(t)F(f)P πft2j x ox − +∞ ∞−∫ ⋅=
The number of cutter teeth participating in cutting, the rake of cutter, and cutting parameters are important factors affecting the frequency spectrum of dynamic cutting forces.
Tan: Chinese Journal of Mechanical Engineering Vol. 40 (2004), pp. 106 [3] H.
Zheng: Chinese Journal of Mechanical Engineering Vol. 37 (2001), pp. 109 [6] M.Y.

Introduction Car shield’s structure immediate influence pedestrian is protecting the forehead crash safety performance, its mechanical property (for example yield strength), the stock thickness, the hinge position distribution and so on various aspects factor has the very important influence to the result.
Because the pilot area various spots’ structure is different, the different impact point will cause the different test result, it will thus affect final whole grading.
It discovers in each small district the hazard point and carries on the partial structure the revision, avoids because of the partial hazard point existence, but affects to the overall pedestrian protects the forehead crash effect.
Purpose meaning According to related literature [4~5], the pedestrian forehead crash injury value with Car shield’s mechanical property, the stock thickness, bulge hard object’s underneath position, impact point and this spot factor and so on gap relevance is very big.

Bearing Pedestal-2 11.Bobbin Fig.1 Structure Sketch of the High-speed Winder Spindle Modeling for the high-speed winder spindle It is impossible to develop a model which considers all the nonlinear factors.
The moment of inertia caused by the whirling of rotation parts is called gyroscopic moment which affects the critical speed of the rotation[6].
The damping affects the dynamic deformation and the amplitude while the rotary occurs under in the critical speed of rotation.
Parameters such as material properties, the stiffness and the damping, are shown in Table 1.
Mechanical Engineering Series, Springer, 2005.

Washing is under the force of hydraulic, mechanical and friction, broking loose, washing and separating the surface fine ore and mud, thereby improving the grade of ore.
The main affecting factors are the physical properties of clay, the type of ore and the strength of mechanical force and time.

And the mechanical tests and microstructure analysis were also taken in this study.
Introduction Recently stainless steel railway vehicles cause more and more attention for the lightweight body structure, high anti-corrosion, safety features, environmental factor and so on.
During the last few years, high power density welding processes have been widely applied in industrial manufacturing, because of their enormous advantages, such as minor shape distortions, reduction of heat affected zone (HAZ) size, and faster welding speed associated with deep penetrations[2].
The chemical components and mechanical properties of SUS301L are given in Table1.
Table 1 Chemical components and mechanical properties of SUS301L [4] Chemical components /% Mechanical properties C Si Mn P S Ni Cr N σs/ MPa σb/ MPa δ/ % HV <0.03 0 <1.0 0 <2.0 0 <0.04 5 <0.03 0 6.00-8.0 0 16.00-18.0 0 <0.2 0 >68 5 >93 0 >2 0 <21 8 A continuous wave (CW) disk laser (Trudisk4002) in TEM00 mode was used to laser weld the stainless steel plates with the power of 4 kW and a beam quality of 8 mm*mrad.

Agar was added as a stabilizer based on the physical properties of the formed product.
Also, its antimicrobial and cytotoxic properties were evaluated.
However, the dressings are often semi-permeable to gases and have poor mechanical properties, which leave the wound susceptible to further damage [3].
Prior to commercialization, further tests on the bandage properties are strongly recommended.
Biological factors such as hemostatic ability, wound healing properties, and skin sensitivity should also be taken into consideration.

The microstructure of these interfaces are exceptionally convoluted which will bring about complex mechanical properties over these interfaces.
Smaller scale hardness which can uncover materials mechanical properties to some degree were estimated [22].
The variation in properties across the weld can be attributed to several factors, like residual stresses just after welding. and other factors can contribute to this hardening like grain size, metallic inclusions, and it can be attributed also to the presence of lower transformation products and some ferrite morphologies like acicular ferrite [35- 36].
Wu Effect of carbonate in electrode coating on the microstructure and mechanical properties of weld , Mater.
Reid Investigating the effects of welding process on residual stresses, microstructure and mechanical properties in HSLA steel welds.