Search results

Although the thing that composite materials have been substitutes for metal shell springs up soon, the application is much wide[1-6]. 1.
A part of winding tension even equal to zero and this seriously affect the performance of carbon fiber materials.
Acknowledgement This work is supported by The Inner Mongolia Natural Science Foundation (2011MS0715) * Communication author: LU Zhimin, Professor.
International Journal of Pressure Vessels and Piping ,2000,77:3-16
Mechanics of Composite Materials,2003,39: 553-558

Experiment Raw Materials.
The Preparation of the Composite Materials.
When the percentage of polylactic acid was 63%, the reinforced materials and the matrix materials could be well combined, and the mechanical properties of composite materials were excellent.
Xue: Shandong Textile Science & Technology, Vol. 1 (2008), p. 9-11.
Wang: Journal of Zhej Sci-Tech University, Vol. 25( 2008), p. 252-254.

Xu et al. studied three-level supply chain model which retailer regarded CVaR minimum as objective function of the material supplier, manufacturer and retailer[9].
Acknowledgements This work was financially supported by the National Nature Science Foundation of China (71001089) and Zhejiang Natural Science Foundation (LY13G01003).
Vol. 39(2011), p. 28 [5] Saman E, Kourosh E: European Journal of Operational Research.
Howlett: Journal of Hydrology.
Vol. 2(2000), p. 21 [11] Acerbi, C: Journal of Banking & Finance.

Materials cost estimation algorithm modules selects raw materials according to parts size and structure of the product preliminary design, access the relevant parameters from database and calculate raw material costs.
System Application Use C6140 ordinary lathe to process a stepped shaft, materials for 45 steel, structure size as shown in figure 1 below.
According to the structure size in figure 1 , The raw material parameter’s selection: material diameter is 63mm, length is 252mm.The calculation results of raw material cost is shown in figure 2.
References [1] Zhaohui Wang,Xiuzhuo Fu: Journal of Shandong University (Engineering Science).
[5] Yuyuan Wang,Yimin Sun,in: The operational manual of over-staff and quota(Sichuan Science and Technology Press, China 1989).

Removal of Alkali in the Red Mud Using CO2 at Ambient Conditions Xinke Wang a,Yihe Zhang*b,Fengzhu Lv c,Rongrong Lud National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China axinke414@163.com, bzyh@cugb.edu.cn,clfz619@ cugb.edu.cn,d79065864@163.com Keywords: Red mud, alkali content,CO2 Abstract.
Materials and Preparation 2.1 Materials Red mud used in this study was obtained from Shandong, in the form of dried-clay.
[4] Wang Qi: Journal of Environment Engineering,Vol.3(2009),p.2275
[6] Zhao Guanghui:Science and technology information,5(2000)
[8] Wang li ying:Science and technology information,7(2010)

Structure and Properties of Epoxy Resin/Poly (aryl ether ketone) Blends Cured with 4,4'-Diaminodiphenylmethane Zhou Jiangang1, 2 , Zeng Liming1 1.College of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070,P.R.China;2.Department of chemistry and materials science, Xiaogan University, Xiaogan 432100,P.R.China;email:zjgxzq@yahoo.cn Keywords: poly(aryl ether ketone); epoxy resin; toughening; nanometer size Abstract.
Adding component with low modulus and high elasticity to enhance the matrix toughness is the main way of early research works, the most representative material is carboxyl terminated liquid butadiene-acrylonitrile (CTBN) rubber [1], but the modulus and heat resistance of cured epoxy resin decreased, so these kind of modified systems were limited in engineering application.
In this paper a new kind of Poly(aryl ether ketone) (PEK-C) made in China was selected to improve the toughness of bisphenol A epoxy resin (EP)/4,4'-Diaminodiphenylmethane (DDM) system with the content of PEK-C lower than 10%, the microscopic phase structure and morphology of impact fractured surface were observed by SEM, the phenomenon of microscopic phase separation and heat resistance property were studied by DMA. 1 Experimental 1.1 Materials The bisphenol A epoxy resin (EP) CYD-128 was supplied by Yueyang Petrochemical Corporation of China; Poly(aryl ether ketone) (PEK-C), white powder, was supplied by Xuzhou Engineering Plastics Factory of China; 4,4'-Diaminodiphenylmethane (DDM) was supplied by the Northwest Chemical Research Institute of China. 1.2 Preparation of samples Adding proper amount of PEK-C to EP and heating temperature to 180°C and stirring made the two mixed uniformly, added DDM to the mixture (EP: DDM=100:27) when cooling to 100°C, stirring
Morphology and mechanical properties [J].Journal of Applied Polymer Science, 1981, 26(3):907-919 [2]Keizo Yamanaka, Takashi Inoue.

With the development of science and technology, a new sort of smart nanocomposites, with piezoelectric material as matrix and BNNTs as the reinforcement have attracted an even more increasing interest in the scientific community thanks to the provision of new properties and exploiting unique synergism between materials.
The components of these constants depend on the structure of material.
The material used for matrix is PVDF and the reinforced material is BNNT.
The material constants are listed in table 1.
Hou: International Journal of Solids and Structures 40 (2003), p.105 [4] K.

Non-wood based material help to offset the growing shortage of forest wood resources[1].
Methodology Raw material preparation.
Oil palm fibers as papermaking material: Potentials and challenges.
Modern Applied Science. 4(2010) 21–29
Journal of Tropical Forest Science. 19(2007) pp. 121–126.

Influence of Temperature and Stress Factors on Warm Compaction Process of Molybdenum Powder Density Jian Li1, a, BintingYang1，b 1 College of Material Science and Engineering, Northwestern Polytechnical University, 127 Youyi Xilu, Xi’an 710072, China a ljnpu@126.com, bybt2006abc@163.com Keywords: Warm compaction process; Numerical simulation; Thermal-mechanical coupling; Relative density Abstract.
FEM Simulation Geometric And Material Model.
Table 1 Material parameters for cylindrical pressed compact Parameter type Parameter value Geometric size Stock diameter:40mm, Height:40mm Material parameters Young's Modulus E=32000 MPa , Poisson ratio μ=0.25 , Initial relative density 0.5, Initial yield stress 160 MPa, Expansion coefficient 4.9×10-6 Thermal parameters Mo powder temperature 200ºC, Inner heat conductivity 149 W/(m·k), Contact coefficient of heat transmission 120 W/(m·k), Die temperature 150ºC It is shown in Fig.1, the model is composed of powder punch and female die which can be heated and insulated.
LARGE DISP, PLASTICITY 5 and UPDATE are chosen here because great nonlinear of material and boundary exists.
Nor: Mech Mater Vol.41 (2009), p.553–560 [4] S.J.Guo, R.Chi etal:Materials Science and Engineering of Powder Metallurgy Vol.11 (2006), p.24-27 [5] Z.Y.Zhou, P.Q.Chen, W.B.Zhao, etal: Journal of Materials Processing Technology Vol.129 (2002),p.385-388 [6] P.F.Feng and J.Sun：China Molybdenum Industry Vol.34(2010),p.39-45

Nowadays, many scholars in civil engineering field have paid attention to the piezoelectric (PZT) smart materials, which can be used to effectively monitor the dynamic characteristics of structures of real-time.
Piezoelectric smart material has some superior characteristics, such as fast response, wide frequency response range, low prices, easy cutting [1~5] etc.
The paper is to study the application of piezoelectric smart materials in structural tests of dynamic loading.
References [1] Song G, Gu H, Li H: An Overview Earth & Space 2004.( League City, 2004), p. 680-687 [2] UDD E: Fiber Optic Smart Structures.( Wiley Inter Science: Join-Wiley & Sons Inc, 1995) [3] Mazzolani F M, Mandara A: Engineeering Structures, Vol. 2(4) (2002), p. 843-856 [4] Kawiecki G: Journal of Intelligent Material Systems and Structures, Vol, 2(3)(1998), p. 189-197 [5] Wang C S: Smart Materials and structures, Vol. 10(3)( 2001), p.548-552 [6] Song G, Gu H, Mo Y L: Smart Mater Struct, Vol. 16(4) (2007), p. 959-968 [7] Gu H, Song G, Dhonde H: Smart Mater Struct, Vol. 15(2) (2006), p. 1837-1845 [8] Yanliang Du, Baochen Sun, Guanglei Zhang: Smart Material and Structure Health Monitoring (Huazhong University of Science and Technology Press, China 2011)