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Effects of Different Graphite Particle Sizes on the Properties of Rigid Polyurethane Foam Liguang XIAO 1, a, Guanjie LI1,b, Cunyou YAN1,c 1College of materials Science and Engineering, Jilin Architectural and Civil Engineering Institute, Changchun, 130118, China axlg627@163.com, bliguanjie09@163.com, cycuny315@163.com Keywords: rigid polyurethane foam (RPUF); graphite; mechanical properties; thermal conductivity; thermal stability Abstract.
The common method of using the graphite to modify polyurethane materials is concentrated in the electrical properties of graphite.
Experiment Procedure The Main Raw Materials.
The reason is 325 mesh graphite particles can be infiltrated within the matrix material completely.
Acknowledgements This work was financially supported by the National Key Technologies Research and Development Program of China(No. 2011BAJ05B03) References: [1] Kim H S,Plubrai P：Composites Part A: Applied Science and Manufacturing Vol.09(2004), p. 100 [2] Javani I, Zhang W, Karajkov E:Cellu-lar Plastics Vol.03(2002), p. 229 [3] Saha M C, Kabir M E, Jeelan S:Materials Science and Engineering Vol.01 (2008), p. 213 [4] Cardoso R J, Shukla A:Journal Of Materials Science Vol.37(2002), p. 603

College of Material Science and Metallurgy, Wuhan University of Science and Technology, 430081 Wuhan, China 2.
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China queenyjj@hotmail.com,doublelsx@163.com,wmmao@ustb.edu.cn Keywords: Work hardening, Isotactic polypropylene, Rolling.
In this work, the two-phase concept is adopted which is usually accepted for polymeric materials.
Feng: Introduction to polymer materials (Machinery Industry Press, Beijing 2004) [4] J.
Raabe: Europ Polym Journal, Vol. 8 (2006), p. 1755 [6] M.

Wang et al., Materials and Design 47 (2013) 510–521
Huh et al. , International Journal of Mechanical Sciences 50 (2008) 918–931
[5] Oliver: et al.: Materials Characterization 58 (2007) 390–400
Kim et al., Materials Science & Engineering A 559 (2013) 222–231
Uenishi et al. / Materials Science and Engineering A 400–401 (2005) 499–503.

Also, details regarding materials, machines, tools and economic analyses are fulfilled.
Material Database Materials database is organized in two interconnected directions: part material, as entity to be machined, and tool material, as entity used in machining.
The materials framing structure is presented in Table 1, based on data from DIN/ISO 513 [12].
Suresh Babu et al., Development of a manufacturing database system for STEP-NC data from express entities, International Journal of Engineering Science and Technology, 2-11 (2010) 6819-6828
Phogat et al., Optimization of cutting parameters for turning operations based on response surface methodology, International Journal of Enhanced Research in Science Technology & Engineering, 2-7 (2013) 83-89

Friction Stir Processing to Increase the Application Temperature of Rare Earth Magnesium Alloy AE42 Govindaraju M1a*, Prasad Rao K2b, Uday Chakkingal2c, K Balasubramanian1d and Ravi Ravindran3e 1 Non Ferrous materials Technology Development Centre (NFTDC), Hyderabad -500058, India 2 Department of Metallurgical and Materials Engineering, IIT Madras, Chennai -600036, India 3 Ryerson University, 350 Victoria Street, Toronto, Ontario M5B 2K3 a*govindaraju.rajusmg@gmail.com, bkpr@iitm.ac.in, cudaychak@itm.ac.in, ddirector@nftdc.res.in, erravindr@ryerson.ca Keywords: Friction stir processing, stir zone, rare earth magnesium alloys, grain refinement.
Liu, Evolution of microstructure and hardness of AE42 alloy after heat treatments, Journal of Alloys and Compounds, 2008;463:1-2, 238-245
[2] Huang Deming, Chen Yungui , Tang Yongbai, Liu Hongmei, Niu Gao, Indentation creep behavior of AE42 and Ca-containing AE41 alloys, Materials Letters, 2007; 61:4-5, 1015-1019
Mukherjee, Microstructure and properties of friction stir butt-welded AE42 magnesium alloy, Materials Science and Engineering: A, 2008; 477:1-2, 243-249
Bingel, Michael Calabrese, Friction Stir Processing of Cast NiAl Bronze, Materials Science Forum 539-543;2007: 3721-3726

Introduction Rust-proof aluminium alloy 5A06 is a typical aerospace commonly used domestic Al-Mg alloy ductile materials, due to its high strength, good corrosion resistance, weldability and a series of characteristics, thus the different states of 5A06 aluminum alloy is main material in the field of aviation, aerospace, shipbuilding, missiles, automobile manufacturing etc.
Advanced material molding technology.
Beijing: science press, 2012, pp.202-207
Journal of Material Processing Technology, 2007,(184):115-123
Journal of Material Processing Technology, 2007,(184):115-123

Composite preparation and testing method Materials：Graphite powder with purity≥95% and granularity≤150; PF resin powder mixed with hexamethylene tetramine and with granularity≤75; PAN carbon fiber with density 1.78g/cm3, fracture elongation ratio 0.015, tensile strength 3900MPa and elastic modulus 230Gpa .
Composite mechanical strength is lower than that of pure PF resin/graphite matrix material.
RI/O, M.C.OJEDA: Journal of Applied Polymer Science, Vol.83(2002),p.2817-2822 [2] FREJ MIGHRI, MICHEL A.
HUNEAULT: Polymer Engineering and Science, Vol.44(2004),p.1755-1765 [3] Man Wu, Leon L.
Power Sources , Vol.131(2004),p.35-40 [10] Wang Yanming, Wang Weiqiang, Li Aiju, etal:Journal of mechanics engineering material, Vol.30（2006）,p.34-36(in Chinese)

As one of the rapid prototyping techniques, the MPLS can manufacture high melting point parts, complex shape parts, or heterogeneous material functional graded parts with high power laser directly acting on metal powder without intermediate procedures or equipment [1-4].
Nan: Journal of Mechanical Engineering, Vol. 45 (2009) No.3, p. 269.
He: Advanced Materials Research, Vols. 591-593(2012), p.1050
Wu: Materials Science and Technology, Vol. 23(2007) No.6, p.631
Haritos: Journal of Materials Processing Technology, Vol. 149 (2004) No.1, p.604

A energy release rate concept was proposed, which is based on the brittle materials crack propagation criterion.
The closure effect of aggregate cohesive traction and the physical phenomenon of material toughness increase during crack propagation were explained.
Zhang and Xu proposed a named GR theory[5-7] based on the concept that concrete is a compound material.
International Journal of Fracture. 92(1) (1998) 71-99
Shah, Features of mechanics of quasi—brittle crack propagation in concrete [J].International Journal of Fracture. 51(1) (1991) 103—120

Methods for calculating deformation of gear teeth contain mechanics of materials, mathematics elastic mechanics, and numerical solver represented by finite element.
V denotes material Poisson ratio.
Acknowledgements This work was supported by China Postdoctoral Science Foundation (2011M500572) References [1] Brown J.
Journal of Mechanical Transmission,2010,8 p1-5 [4] Kang Yan, Shi Zhaoyao, Lin Jiachun.
Journal of Mechanical Transmission, 2008,1:20-24 [5] Fan D L.