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The result indicates that the stiffness of the rubber bearing strip is mainly determined by the mechanical properties of rubber materials and the steel bar and the blot have little effect on the natural characteristics.
Summary This paper discussed the effect of the structural parameters and mechanical properties of rubber materials on the system’s natural vibration.
However, the variation of the steel bar’s width has little influence on the overall stiffness. (2) the variation of the mechanical properties of the rubber materials has remarkable influence on the natural frequency.
Film pressure distribution in water-lubricated rubber journal bearings.
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2005, 219(2): 125-132

If a high-conductivity driver expands a low-conductivity specimen or the specimen is given an inner coating, for example of copper, specimens of bad conductors and nonconducting materials, such as engineering ceramic, which is appealing due to its unique features especially the high strength, high hardness and low density may also be tested.
This research can be available for reference for the application and development of fragile material test technique.
Acknowledgements This paper is supported by National Natural Science Foundation of China (10772088), the Ningbo Natural Science Foundation (2009A610027; 2009A610110), and Research Fund of Ningbo University, project no. xkl09089.
Zhou: Chinese Journal of Solid Mechanics, Vol. 29 (2008), pp. 246-249.
Davis: Symposium on Dynamic Behavior of Material (Albuquerque, N.Mex., September 27-28, 1962).

We got the strip materials meeting the low temperature environment.
Among them, the needed raw materials were in table 1.
The needed fertilizer raw materials were shown in table 2.
Journal of outlook weekly news magazine, 2005 (5) : 28 and 29
Journal of applied foundation and engineering science, 2006.

Heer: Science.
Dai: Science.
Kumar: Science.
Zettl: Science.
Rinzler: Journal of Applied Physics Vol. 88-5 (2000), p.2509 [36] B.

Yet there exists many tightly fitting styles in woman appeal using woven materials that might do harm to human body than the flexible knitting.
Materials and methods How “pressure” feeling comes in modern western medicine aspect How pressure of dress formed explains us the process a mechanical signal becomes subjective feelings.
Fiber product consumption Science. 40(1999) 49-55
Textile Research Journal. 7(2007) 653-660
Journal of Textile Research. 4(2010) 140

There are many ways to manufacture foam metallic materials, such as Gas injection, Vapour deposition, Solid-gas eutectic solidification, Powder compact melting technique, et al.
Foam metallic materials produced by Electro-deposition technique have an excellent three dimensional reticulated structure, high porosity, high specific surface area and uniform quality.
Journal of Power Sources.
Davies, Shu Zhen．Journal of Materials Science , Forum Vol. 18 (1983), p.1899-1911 [4] J.
Banhart．Progress in Materials Science, Forum Vol. 46 (2001) , p. 559-632 [5] Z.

Cai: Journal of materials processing technology Vol. 209(2009), p.1607 [2] B.
Feng, K.Andrew: Materials Science and Engineering A Vol. 445(2007), p.170 [3] C.
Z.Hu, et al.: Journal of functional materials（In chinese）Vol. 37(2006), p. 487 [7] A.I.
Han, L.Cao:Journal of Inorganic Materials（In chinese）Vol. 20(2005) , p.1349 [10] M.
Egon: Journal of colloid and interface science Vol. 218(1999), p.545–553.

Properties of Nanocrystalline Aluminium Fabricated by Warm-vacuum-compaction Method Wei Liu1, a, and Qionghua Zhou2, b 1School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, P.R.China 471003 2Medical College, Henan University of Science and Technology, Luoyang, P.R.China 471003 aliuweidavid@yahoo.com.cn, bzhouqionghua2000@163.com Keywords: Nanocrystalline aluminium; Warm-vacuum-compaction; XRD; Thermal analysis; Microhardness Abstract.
Introduction Nanocrystaline (nc-) materials or nanostructured (ns-) materials are three-dimensional (3D) bulk materials with average grain size typically smaller than 100 nm.
Nc-materials synthesized by severe plastic deformation are full dense and without any pores or contaminant.
Karimpoor, U.Erb, K.T.Aust and G.Palumbo: Scripta Materialia Vol.49 (2003), p. 651 [2] Y.F.Shen, W.Y.Xue, Y.D.Wang, Z.Y.Liu and L.Zuo: Surface & Coatings Technology Vol. 202 (2008), p. 5140 [3] L.Lu, M.L.Sui and K.Lu: Science Vol. 287 (2000), p. 1463 [4] J.Petzold: Journal of Magnetism and Magnetic Materials Vol. 242-245 (2002), p. 84 [5] K.Y.Zhao, C.J.Li, J.M.Tao, Dickon H.L.Ng and X.K.Zhu: Journal of Alloys and Compounds Vol. 504S (2010), p.
S306 [6] L.Zhang, A.M.Elwazri, T.Zimmerly and M.Brochu: Materials Science and Engineering A Vol. 487 (2008), p. 219 [7] W.Liu, Y.Tang, G.Chu, J.Luo, S.Yang, J.Li and W.Dong: Materials Science and Technolog Vol. 14 (2006), p. 127 [8] W.Liu, T.Yang, G.Chu, J.Luo and Y.Tang: Trans.Nonferrous.Met.Soc.China Vol. 16 (2006), p. 747 [9] G.Chu and W.Liu: J.Cent.South Univ.

However, the thickness and density of non-woven materials are the two most important factors.
In our study, three samples of the same thickness, different density materials are studied.
Meanwhile, the sound can be reduced by propagating in the materials.
So the corresponding acoustic absorption materials required for the performance are weakened.
Besides, due to limited experimental conditions, this article only conducts some superimposed contrast experiments on bulk density ratios of two different materials, and in the future we can combine with three or more different materials of different density, and compare with single-layer materials, in order to identify the best ratio.

Weinberger, Process and Tool Development for Friction Stir Welding of Steels, Institute for Materials Science and Welding, Graz, (2010)
Cetkin, Microstructure and Mechanical Properties of AA7075-AA5182 jointed by FSW, Journal of Materials Processing Technology, (2019),vol. 268, 107-116,
Roodgari, Microstructure and mechanical properties of IF/St52 steel composite produced by friction stir lap welding, Materials Science & Engineering , (2020),vol. 772
Series: Materials Science and Engineering, vol. 629, (2019)
Johnson, Microstructure and mechanical properties of friction stir welded AISI321 stainless steel, Journal of Materials Research and Technology, (2020)