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As the electrode must be a good conductor, graphite is widely used currently for bipolar plate material, but it is fragile, great thickness and must be machined for a long periods.
Stainless steel sheet is an ideal material for bipolar plate, but the cross section of flow channel on its surface is complex and too small to machine using conventional method.
Principle: Design and Applications of Fuel Cell System (Science Publishing Company, Beijing 2006)
Wang: Journal of Materials Processing Technology Vol.140 (2003), p. 203–205

The principle of LPPC is the production of high intense shock wave in the surface of the target material by impinging the surface with high fluence laser pulse.
Because of the continuous circulation of water the ablated material produced will be removed immediately from the laser contact spot.
Since laser beam diameter used for peening is 0.7 mm and we have chosen maximum sampling area of 63 μm x 63 μm, in the base material and laser pended region, which is outlined in Table.1.
From Table.1 it is evident that the laser shot peened with lowest pulse density (2200 pulse/cm2) exhibited large variation in the peak height and valley depth from the untreated material compared to surface treated with higher pulse density.
Ax.Feng and Y.Jiang: Journal of Bionic Eng .Vol.6 (2009), p.180 [3] Y.K.Zhang.

Position and strength of the (002) diffraction peak react graphitization degree, (100) diffraction peak reflects the disorder of carbon material graphite layer is deposited.
Portion of CH bond in the raw material are capable of oxidizing a phenolic hydroxyl group with concentrated sulfuric acid under heating, some of the side chain are oxidated carboxyl group.
Acknowledgment The authors thank the financial support for this work provided by National Natural Science Foundation of China (51106051) and National Key Technology R&D Program (2012BAA09B01).
Preparation and Catalytic Performance of Activated Carbon Based Hydrophobic Solid Acid Modified by Silicane [J] Journal of Chemical Engineering of Chinese Universities，2012,4(26):612-617 [5] Shuguang Shen, Tao Wang.
Functional Materials, 2012, 12: 89-92 [6] Satoshi Suganuma, Kiyotaka Nakajima, Masaaki Kitano.

SMA is a kind of super-elastic material and has been applied in many areas due to their high power density, solid state actuation, high damping capacity, durability and fatigue resistance.
The super-elastic deformation behavior of shape memory alloy was studied through material test, and its stress-strain curves were equivalent to multi-linear model (shown as Fig.2 and Fig.3).
The used steel was assumed to behave as an elastic plastic material.
This kind of element is a special element of ANSYS to represent the material property of SMA.
Acknowledgements The authors acknowledge the support from Scientific Research Starting Foundation of Hainan University (kyqd1401), Hainan Natural Science Foundation, and the Midwest Key Areas Construction Project Plan of Hainan University.

High-Efficiency 4kW VAWT Design and Development Lih-Shyng Shyu1, a, Ching-Hai Lee2, b, Yung-Chia Hsiao1, c, Ta-Ming Shih1, d Chi-Ching Chang1, e, Da-Yung Wang3, f 1Department of Electro-Optical and Energy Engineering, MingDao University, Changhua, Taiwan. 2Department of Information Communication, MingDao University, Changhua, Taiwan. 3Department of Materials Science and Engineering, MingDao University, Changhua, Taiwan.
Table 1 4kW at 125rpm rotor speed Table 2 1kW at 90rpm rotor speed The generator stators use silicon steel and the rotors use Nd-Fe-shed material.
Material: SS400 steel Base Set 1 Base steel plate PL2000spi 3500cm(L)*3500mm(W)*100c(T) Design considerations Two major concerns are critical for mast system design.
[5] Tkashi SHIOT, Tsutomu ISAKA, Kazuki MARUYAMA, Reijiro MIKAMO, Kazuichi SEKI ,in: A matching study on the wind turbine generator , DENKI SEIZO K.K, Journal of JSES, Vol.36, No.3, p.59~60, 2010

On the basis of «gasphase-solidphase» model it is possible to offer the following measures concerning performance improvement of ore reduction in the solid state: – to increase the porosity and surface area of ore materials due to preliminary grinding and production of ore-coal briquettes; – to use the coke and coal that are rich in hydrocarbons; – to increase the height of furnace shaft for more complete usage of gas phase reducibility; – to use plasmotron for carbon-content radical concentration increasing in gas phase.
Roshchin, Development of the theory of metals reduction, Modern problems of steel electrometallurgy: Materials of XVI International Conference, Chelyabinsk. (2015) 26-35
Shveikin, Features of the reduction mechanism of refractory metal oxides with carbon, Physical and chemical bases and mechanism of reactions in solids, UC USSR Academy of Sciences, Sverdlovsk, 1976, pp. 172-188
Ten, Role of hydrogen in metal oxide reduction by solid carbon, International Scientific Journal for Alternative Energy and Ecology. 11 (2009) 45-55

In practice, the thickness of U-style steel slabs changes with the distribution of stresses for saving of steel material.
Calculation of horizontal shear force locating on the interface between the two materials is usually based on test data.
To steel-concrete composite plate 35~60% decrease of self-weight than its corresponding solid plate or two-way dense rib plate leads to several benefits: The maximum stress in steel-concrete composite plate is Fig. 8 A photo of test model of steel-concrete composite plate Fig. 9 Equivalent stress of a steel-concrete composite plate cut down by 25~45%, so we can save much of material; l The decrease of steel bars makes it easy to lay out steel bars that resist positive or negative moment; l To long-span RC structures the effect of self-weight is significant, steel-concrete composite plate makes it easy to control the deformation of plate; l The maximum bend moments of columns and substructures are also decreased; l The plate allures less seismic inertial force
Acknowledgements This work was partly supported by the Chinese National Natural Science Foundation (50978064).
Journal of building structures, 1982, n2-3. 25-41.

Flexible hinge is a special driving structure, which utilize the tinny elastic transmutation and recuperation character of elastic material to realize tinny displacement.
Differential part can be treated as equivalent cross-section rectangular beam with length of dx ; furthermore, the bending torque acting on the side of differential part is also the same, based on the "Material mechanics" the radius of curvature will be defined as: )( )(1 xEJ xM = ρ (1) Where E is modulus of elasticity; ρ is the radius of curvature; )(xJ is moment of inertia; )(xM is the bending moment on dx .
The 65Mn is chosen as flexible hinge material, one terminal of the hinge is fixed and the other one is put with the torque of 0.85N.M.
The material of flexible hinge is also 65Mn.
Wang: Chinese Journal of Nuclear Science and Engineering, Vol. 17 (1997) No.3, pp. 266

In industrial production, the bulk raw materials are ground into powder.
So this transportation systems are widely used in the metallurgy, chemical engineering, building materials and electricity generation industry, etc. [1].
Acknowledgments The authors wish to thank the scientific research foundation of the department of science and technology of Liaoning province, People’s Republic of China (No. 20102082); the Foundation of Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education, People’s Republic of China (No. 2008-010) for financially supporting this research.
[5] Zhi-hai Jia, Gang Niu, Jing Wang, Flow regime identification in two-phase flow by using neural network, Journal of Chemical Engineering of Chinese Universities, 19(2005) 368-372 (in Chinese)

The meaning and function of inventory Inventory refers to all material resource reservation.
It refers to raw materials which serves form manufacture and semi-finished products in the process of manufacture.
It refers to material resources or standby in warehouse in the traditional sense.
Management Science 2002, 48(2):300-306
Centralized inventory controlling two levels distribution system European Journal of Operation.