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Synthesis and Characterization of a Kind of Superparamagnetic Material Dandan Li a, Xiaoyan Li b, Xing Huang c, Yuxiang Wang d, Yajuan Zhao e Chemistry and materials engineering institute, Wenzhou university Wenzhou 325000, P.R.
Introduction Magnetic material is a kind of functional materials, which is applied to category of various, and advancing with The Times [1].
In recent years, the magnetic materials have developed rapidly along with the continual emergence of new magnetic materials especially.
Function Materials,2009,40(6):926-929 [3] Xiaoping Zhao, Shaowen Li, Xiangdong Ding.
Science in China,2003,33(5): 434-440 [8] Peng Xi, Lianjun Wang , Xiangan Huang.

Optimal design of the aluminum electrical railcar under uncertainty of material property Tae Min Cho1,a, Byung Chai Lee1,b and Tae Soo Kwon2,c 1 Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 373-1, Guseong-dong, Yuseong-gu, Daejeon, South Korea 2 Korea Railroad Research Institute, 360-1, Woulam-Dong, Uiwang-City, Kyonngi-Do, South Korea a ctm@kaist.ac.kr, bbchlee@kaist.ac.kr, ctskwon@krri.re.kr Keywords: Material property, Uncertainty, Random variable, Reliability-based design optimization, Aluminum electrical railcar.
Abstract In this study, optimal design of the aluminum electrical railcar under uncertainty of material property is performed.
Introduction There are a lot of uncertainties in the engineering problems such as material property, geometric dimensions, loads, and boundary conditions.
In this study, the optimal design of the aluminum electrical railcar under uncertainty of material property is performed.
Lee: Journal of Mechanical Science and Technology, Vol. 24 (2010), p. 279

It is significant for the anti-shear properties of anchor filled with different materials, like twisted steel, cement.
The experiment was double-shear test, two kinds of anchor with seamless and seam were adopted, there were three kinds of filled materials with hollow, grouted and reinforced.
International Journal of Rock Mechanics & Mining Sciences,2005,(42)：13-24
Analytical models for rock bolts.International Journal of Rock mechanics and Mining Science,1999,(36):1013-1029
International Journal of Rock Mechanics & Mining Science, 2004, (41)：1055-1067.

Measurements show that deposited material has obvious delaminating structure and is corrosion resistant, whose components depend on those of the tool electrode material.
From polarity effect, the tool electrode should be anode, and discharge duration should decrease to get both more removal of tool electrode material and less removal of workpiece material, which is good for deposited material.
Acknowledgements This study is supported by China National Natural Science Funds (No.50275038).
Nakamura and et al: Journal of JSPE, Vol.66 (2000), pp. 1943-1947
Wang and et al: Journal of Tsinghua University (Science and Technology), Vol.39 (1999), pp. 45-48

Absorbing materials are composed of wave-transparent materials and absorbing agents, so they belong to mixture media.
It can be considered the first echo at surface of materials.
Kang, Resarch in theoretical designs of microwave absorbing materials, materials review. 23 (2009) 5-8
Yang, Combination of ant colony algorithm and microgenetic algorithm for multilayered radar absorbing coatings optimization, Journal of Functional Materials. 39 (2008) 1052-1055
Su, Preparation of (Ni，Zn，Co)2-W composite Ba-Ferrite and its microwave-absorbing properties, Materials Science and Engineering. 20 (2002) 568-571.

Experimental Materials.
Additive 1 has two impacts on the materials, it improves the compatibility between the PP and the PE and it also increases the material toughness.
Yuksel, Examination of the possibility of recycling and utilizing recycled polyethylene and polypropylene, Materials & Design 29 (2008) 701-705
Noether, Density, Crystallinuty, and Heptane Insolubility in Isotactic Polypropylene, Journal of Applied Polymer Science.
Precision differential calorimetry and the heat of fusion of polyethylene, Journal of Polymer Science.

The offered model is based on the application of the theories of several branches of sciences.
In turn, tσ is calculated using the following coherence [2]: , (7) where σ–1 – limit to material durability.
Wearing can take place according to the following scheme: under a cyclic loading of peak tops, considering the imperfection of the material, a slit is formed under the surface layers of the material.
Goodmen, The stress field created by a circular sliding contact, Journal of Applied Mechanics, 1966, 125–131
Avisane, Researches on three dimension roughness height of rough surface, Latvian Journal of Physics and Technical Sciences (4) 2013

Mixed-Materials parts have great light-weight potential for the automotive application to reduce the carbon footprint.
Introduction The properties of a part can be adapted to local requirements by utilizing mixed materials.
The particle size distribution of the metallic particles was for both powder materials between 20 and 63 µm.
Fig. 2 shows SEM pictures of the powder materials.
Wicker, Metal Fabrication by Additive Manufacturing Using Laser and Electron Beam Melting Technologies, Journal of Materials Science & Technology 28 (2012) 1, pp. 1-14 [13] S.

Materials characterization.
Cho: Journal of Materials Letters Vol.18(8)(1999), p.655–658
Mizuno: Journal of Magnetism and Magnetic Materials.
Ahmed: Journal of Magnetism and Magnetic Materials Vol.290-291 (2005), p.1576–1579
Jiang: Journal of Magnetism and Magnetic Materials Vol323(12) (2011), p.1717-1721.

In recent years, particle reinforced composites are widely used due their mechanical properties as construction materials, high-performance engineering materials or protective organic coatings.
Gorenberg: Journal of Materials Science Vol. 32 (1997), p. 1613-1622 [3] O.K.
Knesl: Key Engineering Materials Vol. 465 (2011), p. 564-567 [12] J.
Lefebvre: Journal of Applied Polymer Science Vol. 114 (2009), p. 3274-3291 [16] J.
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