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Now the six special industries, including welding, auto parts industry, new building materials, bio-medicine industry, and intelligent instruments have initially formed.
[3] Wenxia Zhai,Xianjin Huang,Qiang Zhang and Taiyang Zhong, in: Journal of Nanjing University (Natural Sciences),Vol.42(1)(2006), p.96-102(In Chinese)
[6] Lian Tong,XudongYuan, in:Journal of Shan xi Normal University ( Natural Science Edition ), Vol.37(Sup)(2009), p.61-62(In Chinese)
[7] Bihe Fang,Songshan Hu and Ying Liu, in:Journal of Hefei University of Technology, Vol.35(5)(2012), p.700-703(In Chinese)
[8] Qingjun Zhang,Qiaoqin Liu, in:Guangdong Agriculture Science,Vol.39(5)(2012),p.229-232(In Chinese).

The relationship between friction and the structural states of materials, such as initial, intermediate, and final, plays an important role.
For example, friction stir welding may involve the use of one or more materials [4].
In addition, it is possible to use different technological aspects, such as the schemes of use of tools, the use of tools of different materials and different shapes [5], etc.
Volkov, Application of thermo-frictional and chemical-thermal methods treatments for surface strengthening of materials, Materials science forum, 1038 (2021) 93–99
Loureiro, Influence of tool shoulder geometry on properties of friction stir welds thin copper sheets, Journal of materials processing technology, 213(2) (2013) 129–135

Soil is an important building material and is used for foundation of many large buildings and structures.
Therefore, it’s very important to do theoretical and experimental research on mechanical properties in order to improve the performance of building materials and to optimize the structure of the building.
Acknowledgements This work was financially supported by Talent Introduction Special Funds of Anhui Science and Technology University (ZRC2009229).
Constitutive Model for Geological Materials, Journal of Engineering Mechanics, 1984, 10:1391-1408
Application of Lade’s Criterion to Cam-Clay Model - A New Geo-mechanics Three-Dimensional Method, Journal of Engineering Mechanics, 2000,126(1):112-119

When used to measure the value of cable tension, the vibrating wire pressure sensor should be set into the structure of elastic material consisting of elastic material and sensor.
As is shown in Fig. 2, the cable, under effect of tension, makes the elastic material deformed, and then strain sensing material converts deformation of elastic material into a measurable signal, which will be processed by secondary instrument to obtain the value of cable tension.
Journal of Chong Qing Jiao Tong University (natural science).
In Chinese. (2008) [2] Kaihong Zhang, Cong Li and Huiwen Zhang: Embedded bridge health monitoring system based on ZigBee and GPRS, Journal of Chong Qing Jiao Tong University (Natural Science).

Introduction 1-D quasi-periodic photonic crystal is composed of alternate PIM (Positive index of refraction materials) and NIM (Negative index of refraction materials) .
NIM is dispersive material which produces unavoidable dispersion.
Science.7-79(2001)
Chinese journal of quantum electronics. 733-736 (2008). in Chinese
Chinese Journal of Quantum Electronics. 612-616 (2005) in Chinese

In order to let the light reach silicon as much as possible ,we need to consider the material of film too.
Acknowledgements This work was financially supported by National Natural Science Foundation (51179074), Fujian Natural Science Foundation(2012J01224) and the Foundation for Innovation Research Team of Jimei University(2009A001).
Solar Energy Materials and Solar Cells, 2006,90(2): 228-240(in Chinese)
Journal of Synthetic Crystals, 2010，39(4)：857-861(in Chinese)
Journal of Shanghai University, 2004，10（1）：39-42(in Chinese).

Introduction Due to the new nano-materials’ low pollution, low cost, high performance and chemical stability, they gradually become the research focus.
As a new type of nano-materials, carbon nano-materials such as zero-dimensional fullerenes and one-dimensional carbon nano-tubes have attracted more and more researchers’ attention [1, 2].
XRD spectra of the graphene oxide with medium temperature reaction time (a) 2.5 h (b) 4.0 h and (c) the raw materials graphite Fig.2.
Science 306(2004) 666-669
The Journal of Physical Chemistry B 108(2004) 19912-19916

Zhang: Applied Surface Science.
Nie: Materials Processing Technology.
Zhang: Corrosion Science.
Liu: Journal of Alloys and Compounds.
Dietzel: Applied Surface Science.

(6) Where,, is the Poisson's ratio of material of the two bodies in contact; , is the modulus of elasticity of the two object in contact.
The gear material in this article is 45 steel, the rigidity coefficient K can be worked out from the up formulas, the rest of the parameters take the default value.
Acknowledgements Here, we will thanks a lot to National Science & Technology Department, Anhui Science & Technology Department and Hefei University of Technology, because the progress of the research is supported by The National Natural Science Foundation of China (51075111), Young talents Fund project in Anhui Province（2011SQRL010）.
Journal of Beijing Institute of Technology: 2003, 34 (9):1302-1304
[4] Huali Ding, Ahmet Kahraman: Interactions between nonlinear spur gear dynamics and surface wear.Journal of Sound and Vibration 307 (2006) 662 679

Experimental Investigation of Strengthening and Polishing Aeroengine Blades Guoying Zeng a and Dengfeng Zhao b School of Manufacturing Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan Province 621010, P.R.
Measurement instrument is MTS809 material test machine.
Acknowledgment This paper was supported by Southwest University of Science and Technology postgraduate education innovation project foundation(08xjjg25).
Ciampinia, M.Papini and J.K.Spelt: journal of materials processing technology, Vol.209 (2009), pp. 2923–2939
Liu: Journal of Vibration and Shock, Vol. 23(2004).