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Acoustic Properties of Materials for Vibration Reduction and Resistance on Ultra-precision Machine Dan Huang1, a, Ying Wang2,b 1 School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000 2 School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000 ahuangdan@hpu.edu.cn, bjyjdle@126.com Keywords: ultra-precision machining, porous media, viscous flow, acoustic absorption coefficient Abstract.
A complete theoretical description of waves in materials with pores was obtained by Boit [4] in 1956.
Porous materials absorb acoustic energy by friction with the air that moves inside the pores.
Acknowledgement This research is financially supported by the National Science Foundation of China under grant No. 51102080, Henan Science and Technology Department under grant No. 112102210244, Henan Education Department under grant No. 2011A440002 and the Opening Project of Henan Key Discipline Open Laboratory of Mining Engineering Materials.
Lee: International Journal of Machine Tools and Manufacture, Vol. 50(2010), p. 241 [3] U.

Introduction In the last decade, nanostructured materials have been developed rapidly.
Generally, in grinding of ceramic materials, material removal mechanisms can be classified as inelastic deformation and brittle fracture, the former includes ductile mode grinding and pulverization mode grinding [7-9].
Conclusions This study investigated the material removal mechanisms in grinding of nanostructured materials.
Gallois: Nanostrucrured Materials Vol.10(5) (1998),pp.875-891 [2] H.Chen, X.H.Lin and Y.Zeng, et al: J.Chin.Ceram.Soc.
Zhang: Journal of Japan Society for Abrasive Technology Vol.47(3)(2003),pp.131-134 [8] S.

A Fast Subdividing Circuit Design for Moire Frenge Grating with Smart Materials and Structures Nuan Song1, a, Yi Wu2,b , Wei Quan3,c , Wei Zheng4,d 1,2,3Air Force Aviation University, ChangChun,China abluebirdsong@163.com Keywords: CPLD grating sensor subdivision technolgy ,smart materials and structure Abstract.
In addition, we have introduction of the exterior synchronous clock .The technology not only overcome the instable situation but also improve anti-jamming of circuit system .It has been proved that the method get the better effort in practice. Ⅰ Introduction Along with the development of science and technology, all kinds of precision detection techniques of precision also put forward higher request.
The PLA university of science and technology journal (natural science edition). 2003, (4) : 74 ~ 76

Experimental Materials.
Chandrasekaran, Service characteristics of biomedical materials and implants.
Merican, "Long-term wear failure analysis of uhmwpe acetabular cup in total hip replacement," Journal of the mechanical behavior of biomedical materials, vol. 87, pp. 1-9, 2018
Gubin, "Reduced graphene oxide," Inorganic Materials, vol. 48, no. 8, pp. 796-802, 2012
Ramani, "Analysis of the effect of pressure on compression moulding of UHMWPE," Journal of Materials Science: Materials in Medicine, vol. 9, no. 3, pp. 165-172, 1998.

This research was being an earlier research to form multiferroic materials.
It confirms material lead to form good characteristics of multiferroic materials.
[7] H.Seema, S.K.Durrani.S.K, K.Saeed, I.Mohammadzai, N.Husaain, “Auto-combustion synthesis and characterization of multi-ferroic (BiFeO3) materials”, JPMS Conference Issue Materials, 2010
[8] T.Singanahally, Aruna, S.Alexander, Mukasyan, “Combustion synthesis and nanomaterials”, Current Opinion in Solid State and Materials Science 12 pp 44-50, 2008
[9] D.Suastiyanti, B.Soegijono, “Shifting of x-ray diffraction pattern peak on BaFe12O19 nanocrystalline produced by sol gel auto combustion method”, Advanced Materials Research Journal 576 pp 240-243, 2012.

Machinability for C/SiC Composite Material by Electrical Discharge Machining Yongfu Zhang1,a, Weiwei Chen2,b,*, Huanwu Cheng3,c and Yuping Zhang4,d Department of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China agyshuishangpiao@163.com, bwwchen@bit.edu.cn, cchenghuanwu@bit.edu.cn dstu_zhangyuping@126.com Keywords: C/SiC composite material; Electrical Discharge Machining; Machinability Abstract.
Therefore, it could not be better if this kind of material is applied in the high temperature structural materials and space structural materials.
So it is proper to machine hard and brittle materials.
Therefore, materials like Cu-W alloy are recommended strongly to process these hard and brittle materials.
[6] Yunzhou Zhu, Zhengren Huang, Shaoming Dong, Ming Yu, Dongliang Jiang, Pressureless preparation and properties of C/SiC composites, Journal of Inorganic Materials. 22 (2007) 685-689

Preparation of AlN-ZrO2(Ca) composites by Pressureless sintering Yan Wanga, Ronglin Wangb, *, Jinglong Buc and Lixue Yud Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, College of Materials Science and Engineering, Hebei United University, Tangshan 063009, Hebei, China a15176701185@163.com, bwrl@heuu.edu.cn,cbjl@heuu.edu.cn, yulx@heuu.edu.cnd Keywords: AlN; Ca-PSZ; Composites; Pressureless sintering; Performance.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (50872029) and Hebei Provincial Natural Science Foundation (E2010000960).
Wang: Journal of American Ceramic Society.
Kanzaki: Journal of Material Research.
Tajika: Journal of European Ceramic Society.

The experimental results indicated that the products can be divided into lightweight structural materials and lightweight thermal insulation materials.
Conclusions This paper used PC and EP as the raw material to produce the lightweight wall materials.
The samples produced by this research are divided into lightweight structural materials and lightweight thermal insulation materials.
Journal of materials processing technology, 2008, 204(1): 34-38
The ecology of building materials[M].

Archives of Materials Science and Engineering, 39(2009):38-44
Journal of Materials Processing Technology[J]. 203(2008):221-231
Machining and Machinability of Materials. 7(2010):17-38
Materials and Product Technology. 37(2010):155-172
Engineer Materials. 257-258(2004):339-344.

The materials are mixed in the using place , but it should be not concreted before mixture by 24 hours , and after 24 hours it results in quick-concreting .
The main materials consist of sulphur aluminate cement , retarder and suspend agent .
The prepared materials consist mainly of gypsum , lime , suspend agent , quick-hardening early strength agent and so on .
After the main materials and the prepared materials are mixed by water separately , hydration reaction would create a great amount of ettringite (3CaO·Al2O3·3CaSO4·32H2O) in crystal cell of ettringite , the cubage of water molecule is greater than 80% , thereby , the high water cement ratio is realized [1~5] .
[6] Yi Hongwei , Zhou Huaqing and Zhang Lianxin : Research on basis performance of high-moisture ash filling material [J] , Underground Pressure and Roof Control , 1991 , 9(4): 13 ~ 17 [7] Liu Changwu , Lu Shiliang : Impact and effect of grouting reinforcement of cement on engineering rocks [J] , Journal of China University of Mining and Technology , 2000 , 29 (5) : 454 ~ 458 [8] Wang Jinhua , Wei Jingyun and Ning Yu : Practice and theory of chemical reinforcement for surrounding rock of roadway [J] , Coal Journal , 1996 , 21 (5) : 481 ~ 486