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At present, the SLS technology material uses powder materials such as metals, ceramics, polymers [4-6].In this paper, the designed wood plastic composite materials have low cost, good dimensional stability, pollution-free, easily degradable and other advantages, and is suitable for SLS technology.
Results and Analysis of Simulation Experiment Forming Process of the Wood Powder/PES Composite Materials SLS.
In the simulation ratio of 1:4 of wood powder/PES composite powder materials are used.
So the error of PES/wood powder composite materials sintering is bigger.
Wu: Polymer Materials Science and Engineering, Vol. 10 (2012) pp.174-178.

Producing new composite materials.
The composite materials are the compound of two or more different nature materials, then obtain the new materials with excellent performance.
The composite technology of timber and other raw materials has matured, so it is feasible to produce new composite materials by using deserted wood furniture materials and other materials, such as wood-metal composites, wood-plastic composites and other new composite materials.
Acknowledgment This work was financially supported by the Education Department Science Research Program of Hunan Province(10C1330).
Journal of Northwest Forestry Institute,Vol.20, No.2(2005), p13~18 [2] Ye Kelin, Chen Guangqi and Yu Wenji: The Use of Deserted Plant Fiber Material in Domestic and Foreign Cities.

Sixthly, we should encourage cooperation among raw materials suppliers, manufacturers, recyclers and processors, so that processed materials and components can be used reasonably.
Second, it can encourage manufacturers to use recoverable materials in electronic products, at the same time, strictly prohibit using poisonous or harmful materials.
For the manufacturers and raw materials suppliers, it can reduce their manufacturing cost and improve economic benefit.
Hultman, in: Journal of Organizational Change Management, Vol. 25(2012), p. 297 - 314 [2]L.
Revene, in: International Journal of Management Science, Vol. 35 (2007), p. 553-562 [6]H.

Fig. 3 Waste composition of recyclable materials during semester.
International Journal of Environmental Science and Development, Vol. 3.
American Journal of Environmental Sciences. 6 (5), 2010, 422-427
Journal of Procedia – Social and Behavioral Sciences. 60, 2014, 556 – 561.
Australian Journal of Basic and Applied Sciences. 4(12), 2010, 6380-6389.

Objects with titanium alloy, aluminum alloy and stainless steel materials are tested and analyzed.
Introduction Young’s modulus is one of the most interesting elastic features of materials for determining the material behavior in relation with deforming forces.
The sample materials are aluminum alloy Ti-6A1-4V, aluminum alloy 7075-T651 and stainless steel 303 separately.
Young’s Modulus of three different materials is measured.
Zhuo-qi: Science &Technology Information, pp. 57-58, 2009

Introduction The share of composite materials in aerospace structures has increased drastically in the last decades due to the low weight and high stiffness of such materials.
One of the powerful approaches could be the use of high strength composite materials [2].
Riedel W and Harwick W [5] had undertaken extensive researches on the mechanics of composite materials found the constitutive relation of orthotropic composites materials.
Sekine.composites Part A:applied science and manufacturing.35(2004) , p. 683-692
Journal of Composite materials:31(1997) , p.788-811

Gastón-Ochoa: Journal of Materials Processing Technology, Vol. 153-154 (2004) , p.846
Gastón-Ochoa: Journal of Materials Processing Technology, Vol.143-144 (2003) , p.105
Shin: Materials Science & Engineering A, Vol. 293 (2000), p.165
Segal: Materials Science & Engineering A, Vol. 338 (2002), p.331
Langdon: Materials Science & Engineering A, Vol. 342 (2003), p. 294

Applied Mechanics and Materials.
Journal of Applied Engineering Science. 12 (1) (2014) 37-44 [6] A.A.
Journal of Applied Engineering Science, Vol. 12 (1), (2014), pp 1-10 [9] I.
Journal of Applied Engineering Science, Vol. 12 (2) (2014), pp 122-130 [14] G.
Applied Mechanics and Materials.

Effect of Various Heat Treatment On The Mechanical Properties of Steel Alloy EN31.IJIRST –International Journal for Innovative Research in Science & Technology| “Volume 3 | Issue 12 | May 2017
Hindawi Publishing Corporation Journal of Optimization Volume 2015, Article ID 192030, 13 pages
Selvam, Dr.A.K.Shaik Dawood , optimization of machining parameters for face milling operation in a vertical cnc milling machine using genetic algorithm BY IRACST – Engineering Science and Technology: An International Journal (ESTIJ), ISSN: 2250-3498, Vol.2, No. 4, August 2012
International Journal of Environmental Science and Technology 11:949–58. doi:10.1007/s13762-013-0273-5
Journal of Natural Gas Science and Engineering 21:524–31. doi:10.1016/j.jngse.2014.09.022.

In recent decades, with the development of functional materials, more and more micro-positioning platform are actuated by the physical or chemical effects of functional materials [3].
Closed magnetic circuit mainly consists of GMM rod and cylinder which is made by magnetic material DT4.
Acknowledgements The works was supported by the National Natural Science Foundation of China (Grant No. 50865008), China Postdoctoral Science Fund (Grant No. 20080431005) and Youth Science Fund of Jiangxi province office of education of China (Grant No.GJJ09611).
Sun: Science in China Series E, Vol. 52 (2009) No.7, pp.1858-1865
Lu: Journal of Nanchang Institute of Technology, Vol.27 (2008) No.6, pp.1-5.