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Introduction Wool fiber is an important raw material in textile production.
Materials and Methods We adopt 100% wool roving with 2.93 Nm.
Ahmad, Pakistan Textile Journal, 56(4) (2007), p. 52-53
Göktepe, Textile Research Journal, 76(3) (2006), p. 226-234
WU, Journal of Donghua University (Eng.

Its ultimate compressive strength is greatly increased, thus increasing its ductility and ability to absorb energy, especially for high strength concrete materials, which can effectively reduce the possibility of brittle failure because of improvement of concrete strength
Acknowledgements This work was financially supported by the Fundamental Fund for Research of National Higher Education Institution (2009QL10), Natural Science Fund of China (50808110).
[6] QiKai Sun.: Journal of China Coal Society Vol.16, No. 1 (1991),p.13-26
E: Journal of Huinan Mining Institute No.3(1985), p.25-40
[10] Cunmei Fu, Shanzhong Qi: Journal of Yellow River Conservancy Technical Institute Vol.21, No. 2 (2009)p. 37-39

Journal of Intelligent Material System and Structure.
Measurement Science and Technology.
Journal of Electro ceramics.
Journal of Intelligent Material Systems and Structures.
Journal of Applied Physics, Vol.82 (1997), p.1804-1811

According to the above assumptions, the material deformation in thixoforming is supposed as a rigid viscoplastic one.
The materials are normal and semi-solid SiCp/AZ61 composite respectively.
Acknowledgement This research was supported jointly by grant # 50765005 form the National Natural Science Foundation of China, grant # 00008713 from Innovative Group of Science and Technology of College of Jiangxi Province and the Jiangxi Province Education Commission Foundation.
Ding: Journal of Plasticity Engineering, Vol. 9 (2002), p.1 [3] M.
Zhang: Advanced Materials Research (2010), in press

The design of small agricultural corn thresher Liu Yaoguo WeiFang University of Science &Technology, ShouGuang, 262700, China E-mail:1670333702@qq.com Keywords: Corn thresher, transmission system, the nail tooth roller, pulley Abstract.
Lines of work surface are a surface of steel bar, is the threshing cylinder components, in order to improve its abrasion resistance, selection of manganese steel materials.
Journal of mechanical design basis using [M].
Beijing: China Agricultural science and technology press, 2002, 2.8 133
Mechanics of materials I Beijing: Higher education press, 2004.1

E-mail; 27859u@ube-ind.co.jp 3Japan Ultra-high Temperature Materials Research Institute, Ube, Yamaguchi, 755-0001 Japan.
However, the strength of nearly all ceramic polycrystalline materials drops off rapidly with increases in temperature.
We can conclude that the Al2O3/GAP binary MGC is a suitable candidate for high temperature structural materials.
Materials Science Research 20,697-712(1986). 697
Takahashi: Journal of the European Ceramic Society, 25 (2005), p 1241 [13].

Introduction Since the 1990s, the CFST arch bridge developed rapidly in China because of its excellent work performance of material and the convenience of construction.
BeiJing Academy of Communication Science & Technology. 2006.157-159 (in Chinese) [2] Charles W.
Journal of Structural Engineering, ASCE, 1999, 125(5): 477-484
Haerbing: Heilongjiang Science & Technology Press, 1994,18-25(in Chinese) [9] Liming Zhang.
China Journal of Highway and Transport, 2007,20(6):61-66(in Chinese)

Increase in population increases the consumption rate of raw materials.
Cement is used to bind all the materials of concrete.
Yang, Self-healing in concrete materials, In Self-healing materials - An alternative approach to centuries of materials science ,Springer.(2007) 161–194
Bioengineered Concrete - A Sustainable Self-Healing Construction Material, Research Journal of Engineering Sciences. 2(2013) 45-51
[11] Van Tittelboom, Kim & De Belie Nele, Self-Healing in Cementitious Materials-A Review, Research Gate Materials. 6(2017) 2182-2217

This new composite family has received much attention as potential structural materials due to their high specific strength and stiffness.
These materials potentially have good wear resistance with an excellent combination of low density and high toughness values [1, 4, 5].
TiB2 ceramic particulates were used as reinforced materials in the iron matrix.
A, Xueli Du, Guo S., Microstructure, mechanical properties, electrical conductivity and wear behavior of high volume TiC reinforced Cu-matrix composites, Materials Characterization, 60, 4, 327-336, 2009, [6] Mukhopadhyay A., Raju G.B., Basu B., Suri A.K., Correlation between phase evolution, mechanical properties and instrumented indentation response of TiB2-based ceramicsJournal of the European Ceramic Society, 29, 3, 505-516, 2009 [7] Yang Y., Wang H., Liang Y., Zhao R., Jiang Q., Fabrication of steel matrix composites locally reinforced with different ratios of TiC/TiB2 particulates using SHS reactions of Ni–Ti–B4C and Ni–Ti–B4C–C systems during casting, Materials Science and Engineering: A, 445-446, 398-404, 2007 [8] Bayraktar E., Kaplan D., Buirette C. and Grumbach M., Application of Impact tensile testing to the welded thin sheets, Journal of Materials Processing Technology - JMPT, 145, I, 27-39, 2004 [9] Bayraktar, E., Grumbach, M., Kaplan, D., Effect of forming rate on the
Manufacturing Eng. 20 (1), 55–60, 2007 [10] Wang H.Y., Huang L., Jiang Q.C., In situ synthesis of TiB2–TiC particulates locally reinforced medium carbon steel–matrix composites via the SHS reaction of Ni–Ti–B4C system during casting, Materials Science and Engineering A 407, 98–104, 2005 [11] Wang Y., Zhang Z.Q., Wang H.Y., Ma B.X. and Jiang Q.C., Effect of Fe content in Fe–Ti–B system on fabricating TiB2 particulate locally reinforced steel matrix composites, Materials Science and Engineering A 422, 339–345, 2006 [12] P.

But in fact, the acoustic attenuation of material is related with the ultrasound frequency’s square.
So the most common used frequency is between 10 - 100 MHz in practical inspection for material internal [5].
The scanning acoustic microscopy is based on the ultrasonic pulse reflection at the interface between materials.
Acknowledgements This paper was sponsored by the National Natural Science Foundation of China (50975028); 04 Major Special Project on Science and Technology of China (2011ZX04014-081); 111 Project of China (B08043).
Tittmann: Journal of Pressure Vessel Technology, Vol. 122 (2000), p.374-378