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Materials have first been scanned with an optical and electron microscope to determine average fibre properties and their scatter.
Both materials, matrix and fibres, are treated as perfectly elastic.
To apply GMC, precise data about input materials have to be known, which can be a problem with natural fibres.
The same mixtures of materials as in previous experiment were used.
Hyer: Stress Analysis of Fiber-Reinfoced Composite Materials, WCB McGraw-Hill, ISBN 0-07-016700-1, pp. 40-50 (1998) [6] B.

According to the construction science research institute in liaoning province’s test results, one dimensional wave velocity increased 20% ~ 30% when 28 days strength are 4 ~ 5 times more than 3 days intensity of the slag cement; Therefore, the concrete strength grade could not be assessed by the wave speed [7].
And different strength grade concrete density is in , concrete poisson's ratio is between 0.2 and 0.3, so that considering the pile materials, in theory, the main factors affecting low strain wave speed are elastic modulus, and the influence factors of the elastic modulus are concrete strength, the age of concrete, cement and concrete's moisture state, concrete mix, maintenance condition, etc..
China building materials industry press,1993 (In Chinese) [3] Y.Mei，Ｊ.H.Wan and Y.Sun(1993).
Journal of Huazhong University .2005,Vol22（3）(In Chinese) [5] Q.X.Luo.
Science and technology press.Beijing,2001(In Chinese)

Materials Physics, Eötvös University, Budapest, H-1518, P.O.B. 32, Budapest, Hungary 2 Dept.
Introduction Failure of engineering materials often begins at the surface, thus optimizing the structure and properties of the surface layer may substantially improve the overall behavior.
The process is more complex, if a soft surface is coated with a harder material, such as aluminum with hard oxides [14].
Lu:, Science Vol. 299 (2003), p. 686 [2] X.
Dreizin: KONA Powder and Particle Journal Vol. 23 (2005), p. 152 [18] W.C.

Plasma Monitor and Material Characterization.
As reported by Buijnsters et al.,[10], UNCD is a highly light absorbing material because it is synthesized with a high renucleation rate and composed of a relatively high fraction of sp2-bonded carbon connecting the grains.
Correlation between materials grown and gas-phase species present in the plasma is important to identify the species driving the process mechanism.
Acknowledgment This work was financially supported by Faculty of Science at King Mongkut’s Institute of Technology Ladkrabang, Thailand.
Danilenko: Journal of Achievements in Materials and Manufacturing Engineering Vol. 16 (2006), p. 9 [3] O.

The test material was J55 pipeline steel, and its composition is shown in Table 2.
Table 3 New SRB bactericide raw material ratio.
The size of the test material is 50mm×10mm×3mm.
Journal of Materials Science and Engineering, 2017 35(6): 897-914
Corrosion Science, 2015 98: 354-365

Acknowledgements I am very grateful to the Postdoctoral Science Foundation of Central South University（NO.7604130003）and The Fundamental Research Funds for the Central Universities (NO.721500041) whose support is essential for the completion of this project .
Reference [1] Small and Kazimi.: Journal of Transport Economics Policy.
[14] Lin Z, Wu J: Journal of Transportation System Engineering IT .Vol.7(2007).p.137-42

Smart Materials and Structures, 13:261–269, 2004
Smart Materials and Structures, 12:997–1004, 2003
Journal of Mechanics of Materials and Structures, 4(5):951–976, 2009
Journal of Intelligent Material Systems and Structures, 12:553–565, 2001
Smart Materials and Structures, in review, 2012

Research Methods Material Sources.
Acknowledgements This study was financially supported by Jiangxi foreign science and technology cooperation project (20122BDH80020).
Soil Processes and the Carbon Cycle, CRC Press(1997) [3] Karlen DL, Rosek MJ, Gardner JC, et al.: Journal of Soil and Water Conservation, Vol. 54(1999), p. 439 [4] Jeffrey E Herrick, Michelle MW.
Beijing: Chinese agricultural science and technology publishing house(1991) [7] ManZhen S ong, QiJing Liu, Zirong Wu, et al: Acta Agriculturae Universitatis Jiangxiensis(in Chinese), Vol. 31(2009), p. 416 [8] Genxing Pan, Lianqing Li, Xuhui Zhang, et al: Advance in Earth Sciences (in Chinese), Vol. 18(2003), p. 609 [9] Xianli Xie, Bo Sun, Huizhen Zhou, et al: Acta Pedologica sinica(in Chinese), Vol. 41(2004), p.687

Motion Principle and Experimental Research on a Swing Joint Differential Driven by Shape Memory Alloy YuanGui Tanga, AiQun Zhangb State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, 110016, China atyg@sia.cn, bzaq@sia.cn Keywords: SMA differential actuator; motion principle; thermodynamic performance; experimental research Abstract.
Shape memory alloy, SMA for short, is a kind of special material with function of shape memory, so the SMA actuator integrated with apperceive, drive and achievement together, has been greatly applied in area of mechanics, electronics, chemical, aviation, energy, medicine and robot.
We also thank for the financial support from both National Natural Science Foundation of China (Grant No. 61005074) and Liaoning Province Natural Science Foundation of China (Grant No. 201202225).
Chinese Journal of Rare Metals. 2012,36(6):851-857.

Deformation Characteristics and Load-Bearing Capacity of NO.21 Coal Seam’s Mudstone Floor in Western Henan Jinping Wei 1, a, Fan Chen 2,b and Zhihao Ding 3,c 1 School of Energy Science and Engineering, Henan Polytechnic University,Jiaozuo 454001,China 2 School of Energy Science and Engineering, Henan Polytechnic University,Jiaozuo 454001,China 3 School of Energy Science and Engineering, Henan Polytechnic University,Jiaozuo 454001,China aSky_wjp@yahoo.com.cn, b1072468654@qq.com, cdingzhihao1988@163.com Keywords: mudstone,brittleness, floor specific pressure,brittle-plasticity,load-bearing capacity.
Introduction The rock material after the ultimate strength, with increasing strain, would deteriorate and the load-bearing capacity would drop rapidly.
[2] H.Y.Liu, Y.P.Cheng, C.C.Zhao, et al: Chinese Journal of Rock Mechanics and Engineering.