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Buonassisi1,f. 1Massachusetts Institute of Technology, Cambridge, MA 02139 USA 2Sintef Materials and Chemistry, N-7465 Trondheim, Norway 3Norwegian University of Science and Technology, N-7491, Trondheim, Norway akivambe@mit.edu (Corresponding Author), b gaute.stokkan@sintef.no, ctorunn.ervik@material.ntnu.no, d sergioc@mit.edu, ejhofstet@mit.edu, f buonassisi@mit.edu‎ Keywords: Dislocations, multicrystalline silicon, recombination activity, impurity decoration Abstract.
Multicrystalline silicon (mc-Si), which constitutes over 50% of global cell production [3], is a cheaper alternative to higher-efficiency single-crystalline silicon materials.
However, the cost advantage of these materials is undermined by higher concentrations of incorporated impurities and structural defects, which are known to limit solar cell efficiency [4-6].
Buonassisi, Energy & Environmental Science, 5 (2012) 5874-5883
Sumino, Materials Science and Technology, 11 (1995) 682-690

According to the mechanics of materials relative knowledge, fc≤580MPa is obtained.
[4] H.F.Wang, D.W.Zuo, D.L.Shao, et al, Journal of Functional Materials 41(2010)2029-2033
Wang, D.W.Zuo, M.Wang, et al, Journal of South China University of Technology (Natural Science Edition) 38(2010)12-16
Zuo, D.L.Shao, et al, Journal of Aeronautical Materials 31(2011)31-37
Price, Journal of Sound and Vibration 3(2008)50-66

Introduction Advanced composite materials have many excellent properties ，like high specific strength and specific modulus, performance can be designed and easily overall forming.
The material is CYCOM 970 /T300 12K NT .We used Hashin failure criterion to describe damage.
Reference [1] H．Wang，et al: Journal of Composite Materials January (1995) vol. 29 (2) p.156-178 [2] H．Y .Choi, R.J.Downs and F．K Chang: ,Journal of Composites Material.
August (1991) vol.25 (8) p.992-1011 [3] D．C．Fleming: Journal of Composite Materials(200l) vol. 35(19): p.1777-1792 [4] C .Soutis ，P.
Curtis:Composites Science and Technology(1996) vol.56,p.677-684 [5] L.B .Ilcewicz, E .F.

In the specialised literature, different authors address the processing of these materials by conventional methods.
Parameter and technological characteristics in EDM on Sodick Work-piece/Tool-electrode materials No. of exp.
Parameter and technological characteristics in EDM on ELER 02 Work-piece/Tool-electrode materials No. of exp.
Hashish, AWJ Milling of Gamma Titanium Aluminide, Journal of Manufacturing Science and Engineering. 132 (2010) 9-13
Sarkar, and Nagahanumaiah, Micro electro discharge machining of γ –titanium aluminide alloy, Machines, Technologies, Materials virtual journal, available at http://mech-ing.com/journal/Archive/2012, accessed: 15.01.2014

The other type is some journals about cleaner production, resource recycling and waste management, such as Journal of Cleaner Production, Resources, Conservation and Recycling, The International Journal of Life Cycle Assessment, Journal of Industrial Ecology, Waste Management, Journal of Material Cycles and Waste Management, Waste Management & Research and so on.
Table 1 The situation of ELV reverse logistics published in foreign journal The title of the journal 2002～2007 2008～2013 European Journal of Operational Research 2 3 Mathematical Problems in Engineering 0 1 International Journal of Computer Integrated Manufacturing 1 0 Journal of Cleaner Production 6 16 Resources, Conservation and Recycling 1 13 The International Journal of Life Cycle Assessment 6 1 Journal of Industrial Ecology 2 2 Waste Management 1 8 Journal of Material Cycles and Waste Management 3 0 Waste Management & Research 0 3 others 18 20 count 40 67 In China, the research about ELV reverse logistics started in 2002.
Study on selecting the mode of recycling general waste materials provides reference for ELV recycling.
The current research on the reverse logistics network at home and abroad mainly focus on the products of daily life, industrial by-products and wastes, textile, electronics product, construction waste, hazardous waste, durable goods, packaging materials and so on [27].
Recycling system flexibility: the fundamental solution to achieve high energy and material recovery quotas, Journal of Cleaner Production.121 (2006)123-130

Investigations of MagnetorheologicalYour Paper's Title Starts Here Elastomers Subjected to Cyclic Loading: Please Center use Helvetica (Arial) 14 FULL First AuthorJerzy Kaleta1, a *, FULL Second AuthorMichał Królewicz12,b *, Daniel Lewandowski1,c and Last AuthorMichał Przybylski13,dc 1Full Wrocław University of Technology, Institute of Materials Science and Applied Mechanics, ul.
Manufacture Natural or silicone rubbers are the materials which are most often used as matrices of magnetorheological elastomers.
The designed pressing technology made it possible to produce isotropic and anisotropic materials.
This means that these materials have a high application potential.
Clem: submitted to Journal of Materials Research (2003) [5] P.G.

However, most of the journals did not discuss the full process of MRE preparation in detail.
Mu, “A model of the behaviour of magnetorheological materials,” Vol. 5 (1996), pp. 607–614 [2] M.
Stenberg, “Performance of isotropic magnetorheological rubber materials,” Polym.
Stenberg, “Improving the magnetorheological effect in isotropic magnetorheological rubber materials,” Polym.
Samsuri, An Introduction to Polymer Science and Rubber Technology.

Introduction Advanced multifunctional materials, which were employed as the smart & intelligent materials, have been developed by controlling their microstructure precisely.
The properties of each grain in metallic materials have anisotropy due to the direction of grain growth.
Wu, Ceramic Engineering and Science Proceedings, 20, 3 (1999) 309-316
Murakwa, Key Engineering Materials, 345-346 (2007) 1489-1492
Yoshinaga, Journal of the Japan Institute of Metals, 58, 4 (1994) 382-389

Mechanical properties of ceramic materials are closely related to the grain size, and control the ceramic material grain size is the key to increase mechanical properties of materials.
It is all known that the mechanical properties of ceramic materials is closely related to the grain size.
Conclusion Grain size plays a decisive role for the mechanical properties of ceramic materials.
Johnson, et al: Refractory Metals and Hard Materials,37(2013)52-59
[7] BAI Ying-long, WU Chong-hu, et al: Materials Science and Engineering of Powder Metallurgy. 2012,17(2): 139-146

Introduction Drilling is one of the very important machining processes on any materials, including composite materials.
[2] Khashaba, U., El-Sonbaty I., Selmy A., Megahed A., Drilling analysis of woven glass fiber-reinforced/epoxy composites, Journal of Composite Materials, 47(2), (2012) 191-205
H., Effect of tool wear on delamination in drilling composite materials, International Journal of Mechanical Sciences, 49, (2007) 983-8
[30] Khashaba, U., Drilling of polymer matrix composites: A review, Journal of Composite Materials, 47(15), (2013) 1817-32
[34] V Krishnaraj, S.V.G.S., An investigation on high speed drilling of glass fibre reinforced plastic (gfrp), Indian Journal of Engineering & Material Sciences, 12, (2005) 189-95