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Research on Metallurgical Structure and Hardness of LY12 Aluminum Alloy Weld Zone under TIG and A-TIG Yan Wang College of Mechanical & Material Engineering，China Three Gorges Univ.
Experiment Material Typical duralumin LY12 was adopted in this experiment and its chemical constitution was shown in Table 1.
Andrzejewski: submitted to Journal of Materials Science and Engineering (2005) [2] A.F.
Prangnell: submitted to Journal of Materials Science and Engineering (1999) [3] T.Senthil Kumar, V.Balasubramanian and M.Y.Sanavullah: submitted to Journal of Materials and Design (2007) [4 ] Lucas W and Howes D S: submitted to Journal of Welding and Metal Fabrication (1996)

Introduction In resent years, the calculation software of the first-principles Density-functional theory (DFT) is widely used in materials science research [1-4].
And we use Materials Studio 4.4.
Materials Research and Application. 2009,3(4): 239-242
Key Engineering Materials, 2004(11): 1157-1160
Key Engineering Materials, 2008, 368: 803-805.

The effect of low density filler material comprising polyurethane foam on the axial crushing resistance of Nomex honeycomb under quasi-static compression conditions was analyzed.
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[5] Aminanda, Y., Castanié, B., Barrau, J.J., and Thevenet, P., Experimental analysis and modeling of the crushing of honeycomb cores, Applied Composite Materials, Volume 12 (2005), pp. 213-227
[9] Abramowicz W. and Wierzbicki T., Axial crushing of foam-filled columns, International Journal of Mechanical Sciences, Volume 30, No. ¾ (1988), pp. 263-271

Acknowledgements This work was financially supported by the National Natural Science Foundation of China (Grant No. 11172101).
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During process of steel gate design, primary problems including the facts that materials bill generation by hand are time and energy-consuming[1]; 3D modeling depends on a unit of specific project without scientific management in graphics structure, classification and hierarchy, thus the low transferability and repeating utilization factor[2].
Journal of Computer-Aided Design & Computer Graphics.2001,13(1):44-47
Journal of Tianjin University.2008,41(9):1087-1090
Journal of North China Institute of Water Conservancy and Hydroelectric Power.2010(6):23-26
Chinese Journal of Rock Mechanics and Engineering.2008,27(10):2043-2050.

Skogsgårdh: Materials Science and Engineering Vol. 279 (2000), p. 95
Altan: Journal of Materials Processing Technology Vol. 108 (2001), p. 384
Altan: Journal of Materials Processing Technology Vol. 98 (2000), p.25
Hartl: Journal of Materials Processing Technology Vol. 167 (2005), p. 383
Wang: Journal of Materials Processing Technology Vol. 177 (2005), p. 668

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This work presents the characteristic properties of powdered materials sintering under conditions of liquid-phase sintering.
Gan, “Influence of hydrogen and helium implantation on the properties of structural materials,” Journal of Surface Investigation. 2 (2008) 207-211
Kroening, “Effect of hydrogen and helium on the properties of nuclear reactor materials,” Bulletin of the Russian Academy of Sciences: Physics. 72 (7) (2008) 963-965
Semenkov, The possibility of casting surface alloying by nanopowders, Advanced Materials Res. 880 (2014) 272-275
Semenkov, Activation of copper and alumina powders in ball mill, Advanced Materials Res. 872 (2014) 137-141

Nano materials is a field that takes a materials science-based approach to nanotechnology.
It studies materials with morphological features on the nano scale, and especially those that have special properties stemming from their nano scale dimensions.
A novel mechanical property of nano materials is a subject of nano mechanics research.
The conference is sponsored by International Materials Science Society, and the proceedings are published by international journal Applied Mechanics and Materials.
The selected, peer reviewed paper from ISQNM 2013 focus on five topics: (1) Quantum, Nano, Micro Materials and Technologies, (2) Material Science and Technology, (3) Mechanic Manufacturing System, (4) Information Technologies and Computational Procedures in Engineering Researches and Design, and (5) Related Topics.

The thesis adopts the SLP (System Layout Plan) to analyze the collected data of new PMS medical cable assembly product, manufacturing process and production material flow with the use of different tools, combined with constrained conditions related of the new facility to plan the process layout of the PMS medical cable assembly line, then adoptscorrelation analysismethods from production line balance theory and material flow project theory to improve layout of production line, so that the material transit distance could be shortened, the cost could be reduced and the balance rate of the production line could be improved.
It can increase the capacity, solve the problem of current layout, decrease the material handling and increase the utilization rate of the manufacturing locations.
Based on the demands of process and material, we can calculate material handling amount (see Tab.2) and the From-To matrix(see Tab.3)[1].
Acknowledgements The authors gratefully acknowledge the financial support of the national natural science foundation, China(No. 70932004), and the fifth innovation practice program of Shanghai Jiao Tong University (IPP5072).
Kusiak,Machine layout: an optimization and knowledge-basedapproach [J]International Journal of Production Research, 28 (1990), pp. 615–635