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Along with the development of the high polymer and the needs of the production of the modern industry, engineering plastic as a new type of gear materials have been widely used.
Owing to the composite materials large deformation, the maximum and central oil pressure of the meshing point of composite gear pair engagement is obviously higher than steel-steel gear engagement.
Acknowledgements This work was financially supported by the National Natural Science Foundation of P.R.China through contracts no.51175275 and the Science and Technology Plan of Qingdao through contracts no.12-1-4-4-(2)-JCH.
Chinese Journal of Computational Mechanics, 2005, 22(5): 568~573
Zhang: Composite Material Gear[M], 1993 (Science Press of China) [5] L.

It meant that the melting of core material occurred from 43-55 oC.
Choe, et al: Journal of Applied Polymer Science Vol. 108(2008), p. 2337-2344
Kong et al: Hefei: China Science and Technology University Press,1996, in chinese
Ge, et al: Journal of Solar Vol.4(2004) p. 88-91, in chinese
Ye:Journal of Solar Vol. 6(2005), p. 825-829, in chinese.

Reseach on Distributed Material Requirements Planning Based on Distributed Decision Support Systems Yukui Sheng1, a, Wanlian Lan2,b 1 School of Traffic and Transportation Engineering，Changsha University of Science & Technology，ChangSha, China 2 School of Civil Engineering and Architecture, Changsha University of Science & Technology, ChangSha, China a shengyukui@sohu.com, b lan-wanlian@163.com Keywords: Distributed Material Requirements Planning.
Material Requirements Planning decompose the Master Production Schedule into parts production schedule and purchase schedule of raw materials and purchased parts according to specific features of products structure, and determine the date of production and completion and the date of purchase and warehousing of raw materials and purchased parts.
Master Production Schedule Material Requirements Planning Features of Products Stock Information Production Orders Purchase Orders Figure 1 Logic of Input ( Output ) of MRP 2.2 Advantage of Distributed Material Requirements Planning To controlling manufacture system of complex production process, it must inspect all essential materials which can or can not meet needs.
Science Press. (2004) [6] Mo Zan, Feng Shan, Tang Chao.
Journal of Systems Science and Systems Engineering, (2002) [7] Chengkong, Yangge.

Materials Science and Engineering: A.
International Journal of Fatigue.
International Journal of Fatigue.
Journal of Composite Materials, Vol.12 (1978), p.19-39
Fitting models to composite materials.

References [1] V.S.Deshpande and D.Cebon: Journal of Materials in Civil Engineering Vol.12(3)(2000), p.262
Masad: Journal of Materials in Civil Engineering, Vol. 16(2)(2004), p.133
Cardon: Composites Science and Technology Vol. 59(9)(1999), p.1311
Chen: Construction and Building Materials Vol. 23(2009), p.3161
Chen: Journal of Engineering Mechanics Vol. 136(4)(2010), p.448.

Mechanical properties of a novel kind of biomass cellular material prepared from forage grass Chaole Yun1,2,a, Xuegang Luo1,2,b,*, Xiaoyan Lin2,c 1 School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China 2 Engineering Research Center of Biomass Materials, Ministry of Education, China a yunchaole1987@163.com, b lxg@swust.edu.cn, c lxy20100205@163.com Keywords: Forage grass; Seed germination experiment; Mechanical properties; Biomass cellular material; Abstract: In this paper, a kind of new biomass cellular material was prepared by the growth of forage grass such as annual ryegrass, tall fescue, and trefoil in the molding container.
Materials with a cellular structure are widespread in nature and include wood, cork, plant parenchyma and trabecular bone.
Experimental materials and methods Materials.
Gibson: Journal of Biomechanics.
Vol. 38 (2005), p. 377-399 [4] Zuodong Yin, Zelin Pan, Cai Wang, et: Polymer materials science and Engineering.

Journal of Achievements in Materials and Manufacturing Engineering, 91 1 (2018) 27–33
Kalugin, Studying the Effect of Fuel Elements Structural Materials Corrosion on their Operating Life.
Materials Science Forum Submitted, 1038 (2021) 108-115
Journal of Nuclear Materials, 523 (2019) 310-319
ARPN Journal of Engineering and Applied Sciences, 15 (15) (2020) 1657–1665

In other words, the production would emission less harmful gas and dust than other building materials.
Timber materials which are specific produced is one of the best waterproof building materials.
Chemical osmose process means that timber materials are measured by a certain concentration of fire retardant.
NZ Timber Design Journal.
Popular Science & Technology.

The choice of materials and sample production technology.
Materials Physics and Mechanics. 2018 Jan 1;38(1):11-5.
Inorganic Materials: Applied Research. 2018 Jul 1;9(4):639-43.
Non-destructive testing of technological discontinuities of the T-shaped zone of the integral structure made of PCM using phased ultrasound arrays// Journal «All materials.
Structural Polymer Composite Materials.

Effect Of Different Sintering Temperature On The Performance Of Mullite-Corundum Refractory Materials LI Ping1,2, GU Xing Yong1,2,a, LUO Ting1,2and Chen Yun Xia1,2 1Jingdezhen Ceramic Institute, Jingdezhen, Jiangxi, 333403, China 2Jiangxi Provincial Key laboratory of advanced ceramic materials, Jingdezhen, Jiangxi, 333403,China aguxing-y@163.com Keywords: Sintering temperature; Mullite whisker; Formation in-situ; Refractory materials Abstract.
The mullite-corundum refractory materials with well-dispersed needle-like mullite formed in-situ were prepared.
Secondly, calcined bauxite and Suzhou kaolin, the raw materials of the sintered materials, were weighed, wet grinded, dried and then sieved by 120 meshes.
Finally, the grinded and sieved raw materials of the sintered material and the granulated precursors of mullite whisker were weighed respectively and mixed uniformly according to the designed mass ratio of 7:3.
Journal of Ceramics.2010,(03):484-489 [9] Jia Jiangyi,Cao Zhenyuan, Lu Xiangyang.