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Research on Nano Materials Tennis Rackets Zixin Zhu Department of Physical Education, Huazhong Agricultural University, China zhuzixin2012@yeah.net Key Words: Nano Materials, Tennis Rackets, Performance, Pros and Cons Abstract.
Research the application of nano materials in tennis rackets.
This paper reviews the material development for tennis rackets and analyzes the differences of performance and price of various materials.
Table 2 compares the performance and prices of different tennis-racket materials.
Table 3 compares the performance and costing of common racket materials.

Abstract.Based on 75 cube specimens(100mm×100mm×100mm) of the super high early strength grouting material at elevated temperature,this paper describes the design of the high temperature test,compressive test and some relevant phenomena in testing,analyzes strength of the super high early strength grouting material at elevated temperature,and obtains the stress-temperature curves of the super high early strength grouting material at elevated temperature.By analyzing the staged characteristics of the curves,the regularity of the strength of the super high early strength grouting material at elevated temperature is discussed and some fitting mathematical formulas are suggested.
(a) 600˚C (b) 800˚C Fig.4 Comparison of destroyed specimens The stress-temperature curve.In order to facilitate comparison,draw the stress-temperature curves together and get stress-temperature curves of different materials at elevated temperature.Stress-temperature curve of every type of grouting material is as shown in Fig.5.
References [1] Railway Construction Academy of Railway Sciences Institute.
Railway Construction, 1977 (5) :6-13 [2] Zhang Xiaoping,Sun Changzheng,Zhao Tongfeng,Chen Qian.Study on Fire-resistance Performance Test of the Super Early Strength Grouting Material[J].Construction technology,2014, 43(5): 13-16 [3] Xiao Jianzhuang,Wang Ping,Xie Meng,Li Jie.Experimental Study on Compressive Relationship of HPC at Elevated Temperature[J].Journal of Tongji University, 2003, 31(2): 186-190 [4] Hu Yuefeng.
Journal of Building Materials, 2004, 7(3): 281-285

Additive manufacturing has allowed for the development of a wide variety of prosthetics using different materials.
Materials and Methods Mechanical system.
In the Low Cost section, several materials were discussed; to verify these materials a series of Von Mises and Displacement simulations were conducted.
On the other hand, the remaining four materials have similar behaviors, however, PLA is the one that has the easiest to print which gives rigidity to the grip, other materials give similar results.
Thakur, "Experimental tensile strength analysis of ABS material through FDM technique," Materials Today: Proceedings, Sep. 2023.

Materials swelling.
Anisotropy of Surface Roughness due to Materials Crystallography.
Brittle materials present some different characteristics which are not encountered in machining ductile materials.
Lu, "Diamond Turning of Silicon Substrates in Ductileregime," Journal of Materials Processing Technology, Vol.73, p.42 (1998)
To, "A Theoretical and Experimental Investigation of Surface Generation in Diamond Turning of an Al6061/SiCp Metal Matrix Composite," International Journal of Mechanical Sciences, Vol. 43, No. 9, p. 2047 (2001)

Materials Science and Engineering, 790, 139685
Journal of Materials Science and Technology, 33(4), 359–366
Reference Module in Material Science and Materials.
Materials Science and Engineering, 803, 140476
Journal of Materials Science & Technology, 34(5), 737-744

In the research, nanoporous super thermal insulation material compounded with Xonotlite-SiO2-aerogel were prepared, and distribution of SiO2-aerogel in the material and pore structure as well as pore size distribution of the composite material were studied.
Nitrogen adsorption isotherms of aerogels, xonotlite material and composite material were shown in Fig.1 and the pore size distribution were depicted in Fig.2.
The results in Table.1and Fig.2 show that the pore diameter of composite material compounded with SiO2-aerogel as nanoporous carrier and Ultra-light calcium silicate material constructed with fibrous xonotlite crystals as the matrix is greatly minished as compared with Ultra-light calcium silicate material.
Acknowledgements This research was funded by Guangdong Natural Science Foundation of China (Grant No.04020035) and Guizhou Governor's Fund for Outstanding Talents in Science, Technology and Education of China (Grant No.2005-111).
Liang: Journal of The Chinese Ceramic Society Vol. 28 (2000), pp. 401-406.

Most of these materials has anisotropic coefficients of thermal expansion (CTE), resulting in a microcracking during cooling of the sintered material.
Umarji: Solid State Sciences Vol. 6 (2004), p. 1313
Hanuza: Optical Materials Vol. 34 (2012), p. 1048
Nikolov: Solid State Sciences Vol. 12 (2010), p. 2010
Harris: Journal Materials Science Vol. 47 (2012), p. 6286

Many materials show viscoelastic properties under long term load, because of the complexity of viscoelastic problem, it is not enough for describing the characteristics of material and structure with classic viscoelastic model.
Along with the development of chemical industry and application of polymer materials, Only by using the elastic and plastic theory to study the thick-walled cylinder mechanical problems cannot reflect the viscoelastic properties of materials because of polymer, rubber and other materials have the properties of elastic solid and viscous fluid, and the demand for material performance index becomes higher and higher.
Wu:Journal of Changde Teachers University,Vol.14 (2002),p.21
Li:Chinese Journal of Computational Mechanics,Vol.24 (2007),p.154
Ye: Journal of Basic Science and Engineering,Vol.19 (2011),p.271

This paper is devoted to the parts formation from composite materials in the process of selective laser melting.
Approaches and Equipment Investigated materials.
Mechanical tests results Material 03Cr17Ni12Mo2 03Cr17Ni12Mo2+1TiC 03Cr17Ni12Mo2+3TiC Yield strength, [MPa] 526± 16 579 ± 9 731 ± 14 Temporary tensile strength, [MPa] 625 ± 20 705 ± 7 849 ± 15 Elongation, [%] 32 ± 2.6 29 ± 2.4 21 ± 2.9 In materials science, it is well known that the material strengthening is usually achieved due to plasticity.
Materials 2018, 11, 13181–131812
Materials 2018, 11, 2356

Key Engineering Materials, Vol. 455 (2011), pp.575-579
Advanced Materials Research, Vol. 887-888 (2014) No.1, pp.1215-1218
Applied Mechanics and Materials, Vol. 509 (2014) No.1, pp.50-55
Advanced Materials Research, Vol. 902 (2014) No.1, pp.129-134
International Journal of Mechanical Sciences, Vol.41(1999), pp.301-1322