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Tab. 1 The structural parameter of test pavement Parameters of Materials Thickness Elastic Modulus Poisson Ratio Inner Friction Angle Cohesive Force Density (cm) (MPa) ( C°) (KPa) (kg/m3) Surface course ①AC-10C 3 1400 0.25 60 350 2500 ②AC-16F 4 1200 0.25 60 350 2500 Upper substrate ③6% cement stable chip 16 1300 0.25 40 250 2400 Lower substrate ④5% cement stable chip 16 1300 0.25 40 250 2400 Base substrate ④4% cement stable chip 18 700 0.25 40 250 2300 Bedding course ⑥Graded chip bedding course 15 300 0.35 27 70 2200 Subgrade ⑦ Soil base 80 30 0.40 22 55 1900 Design of Test Road Section and Roughness.
K.Panagouli: Journal of Transportation Engineering, ASCE.
Fwa and Zhao Zhe: Journal of Transportation Engineering, ASCE.
[11] Huang Likui, Sheng Canhua: Highway Communication Science＆Technology.
Vol 23(2006), p. 27 [12] Sun Lu, Dun Xuejun: China Civil Engineering Journal.

Vetter: Journal of Materials Processing Technology.
Han: Operations Research and Management Science.
Wang: International Journal of Advanced Manufacturing Technology.
Wu: Journal of Manufacturing Systems.
Guo: Introduction to bayesian networks (Science Press, Beijing 2006).

This indicates that the conjuncture has fully monomer dissociation, fine material increases, the flotation process begins to deteriorate, and meticulous material overflows into the concentrate, the concentrate grade begins to decrease.
Acknowledgements This study was supported by the National Natural Science Foundation of China (GrantNo.51264020).
References [1]Submitted to Journal of Resources and Living Environment (2009)
[2] Naqiong, Bikai: submitted to Journal of Metal Mining Supplement (2003)
[3] Song Quanyuan: submitted to Journal ofMineral Utilization (1994)

Dynamic Behavior and Stability of Prestressed Arch-Supported Reticulate Shell Structure Jiantao Dong1,a ,Jun Zhao2,b, Kai Shi3,c 1 School of Science, Chang'an University, Xi'an, 710064,China 2,3 State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences, Wuhan ,Hubei 430071, China a djtchd@163.com, b abc_438@163.com, c shikaiwp@yahoo.cn Keywords: prestressed, arch-supported reticulate shell, dynamic behavior, stability Abstract.As a new long-span space system, the prestressed arch-supported reticulate shell structure performs the advantages of reticulated shell and prestressed structure.
The Modal Of The Non -Prestressed Arch Supported Single Double Reticulated Shell For The First Four Order In order to explain the influence degree of the change of stiffness to the dynamic performance, we will use the model of static analysis in the case of the same span of the prestressed single layer reticulated shell of the invariant of element type and material properties.
Delft University Press，1995 [3] K J Bathe．Prentice-Hall Inc，1982 [4] Swamy R.N., Mukopadhyaya P., Lynsdale C.J. 19,77(1999) [5] Norris T., Saadatmanesh H., Journal of Structural Engineering,123,903(1997) [6] Laura De Lorenzis, Journal of Compsites for Construction, 5,114(2001) [7] Kurtz S., Balaguru P.
Journal of Structural Engnineering,27,35(2001) [8] Konno,Katsuyuki;Sato．Yasuhiko；Kakuta.Yoshio；Ohira．Msaji．
Journal of Structure Engineering,2004

The causes of blade failure have many aspects, such as defects of blade material, lack of static strength and high cycle fatigue.
Tab. 2 Parameters of the impeller material name density elasticity modulus poisson ratio yield strength HF-1 2.66g/cm3 69E9 0.31 180MPa The loads applied on the axial blades consist of centrifugal force, the acceleration of gravity load and aerodynamics load.
Acknowledgements This work was financially supported by Natural Science Foundation of Hebei Province(E2012502016) and The Fundamental Research Funds for the Central Universities(12QN39).
References [1] J N Reddy: Journal of Applied Mechanics, Vol. 51 (1984) No. 4, p. 745 [2] T G KIM, H C LEE: Engineering Failure Analysis, Vol. 17 (2003) N0. 6, p. 307 [3] EJAZ N, SALAM I, A TAUQIR: Engineering Failure Analysis, Vol. 14 (2007) No. 7, p. 1313 [4] Qiudong He, Shuguang Gong, Tao Ding: Journal of Mechanical Engineering, Vol. 47 (2011) No. 24, p. 122 (In Chinese) [5] Jun Mao, Liguo Yang, Yanhong Xi: Journal of Mechanical Engineering, Vol. 45 (2009) No. 11, p. 133 (In Chinese) [6] Jun Mao, Lin Xue, Dan Wang: China Safety Science Journal, Vol. 14 (2003) No. 5, p. 75 (In Chinese) [7] Sanwei Gong, Liyun Ren, Huoxing Liu: Themal Turbine, Vol. 36 (2007) No. 3, p. 153 (In Chinese)

Sloan1,c 1ARC Centre of Excellence for Geotechnical Science and Engineering, The University of Newcastle, Australia.
Canadian Geotechnical Journal, 1968, 5(4): 225-244
Canadian Geotechnical Journal, 2005, 42(1): 263-271
Canadian Geotechnical Journal, 1989, 26(2): 385-400
Canadian Geotechnical Journal, 2006, 43(8): 852-868

Honig2i 1AGH University of Science and Technology, Al.
Nkrumah University, Ghana), b tomasz.kolodziej@gmail.com, ctokarz@agh.edu.pl, djanuszp@agh.edu.pl ekapusta@agh.edu.pl, fkakol@agh.edu.pl, gkozlow@agh.edu.pl (corresponding author),htarnawsk@agh.edu.pl ijmh@purdue.edu Keywords: iron oxides; magnetically ordered materials, magnetostriction Abstract.
In general and at al temperatures, the magnetostriction for this material is small, not exceeding 10%.
Acknowledgements This work is financially supported by Faculty of Physics and Applied Computer Science of AGH UST.
[5] Journal of Physics: Conference Series 303 (2011) 012106

The key problem of high strength steel plate hot stamping area is discussed , present situation and the prospect is pointed out. 0 Introduction New materials and new processing technology has been the important force for the human society.
This topic is funded by Qiqihar university young teachers' scientific research start-up project (2012k-M18 ) Reference [1] Akerstrom P，Wikman B,Oldenburg M.Material parameter esti-mation for boron steel from simultaneous cooling and compressionexperiments[J]．Modeling and Simulation in Materials Scienceand Engineering，2005，(13)：1291-1308
[2] Akerstrom P，Oldenburg M．Austenite decomposition during press hardening of a boron steel-computer simulation and test[J]．Journal of Materials Processing Technology 2006, 174:399-406
[4] Merkleinl M，Lechler J．Investigation of the thermo-mechanical properties of hot stamping steels[J]．Journal of Materials Pro-cessing Technology，2006，(177)452-455
[6] Naderi M，Saeed-Akbari A，Bleck W.The effects of non-isother-mal deformation on martensitic transformation in 22MnB5 steel[J]．Materials Science and Engineering，2007:1-11

Grinding with WEDM is one of the emerging areas developed to generate cylindrical form on hard and difficult to machine materials by adding a rotary axis to WEDM.
Singh et al. [7] studied the effect of Peak Current on Surface Roughness and Tool Wear Rate using Different Electrode Materials.
Paganetti, " Wire electro discharge grinding: surface finish optimisation" [3] Ahmet Hascalık and Ulas Caydas, " Electrical discharge machining of titanium alloy (Ti–6Al–4V)", Applied Surface Science 253 (2007), PP. 9007–9016 [4] J.C Rebelo , A Morão Dias , Ruy Mesquita and Mário Santos, " An experimental study on electro-discharge machining and polishing of high strength copper–beryllium alloys", Journal of Materials Processing Technology Volume 103, Issue 3 ( 2000), PP. 389-397 [5] B.
Hemath Kumar, " Mathematical modeling of electric discharge machining of cast Al–4Cu–6Si alloy–10 wt.% SiCP composites" , Journal of Materials Processing Technology Volume 194, Issues 1–3(2007), PP 24–29 [7] Shankar Singh, S.
Pandey, " Some investigations into the electric discharge machining of hardened tool steel using different electrode materials", Journal of Materials Processing Technology 149 (2004), PP 272–277

Structure and Nanoscale Polarization Switching Induced by High Frequency Alternating Current in PbTiO3 Polycrystalline Films Huifen Guo1, a, Shuxia Guo 2, b 1School of Physics and Engineering, Luoyang Key Laboratory of Photoelectric Functional Materials, Henan University of Science and Technology, Luoyang 471023, China 2 School of Physics and Electronic Engineering, Jiaozuo Teachers College, Jiaozuo 454000, China aemail: jyguohuifen@126.com, bemail: gsx0391@eyou.com Keywords: PbTiO3; Domain Structure; Polarization Switching Abstract.
The results reveal that the PTO films are single perovskite phase grain films with tetragonal structure, and are polycrystalline materials with no evidence of preferential orientation.
Introduction The science and technology of ferroelectric materials is nowadays attracting a surge of interest due to the numerous applications.
Apart from them, the rest well coincide with that of the standard PCPDF card No. 78-0299, indicating that the samples are single perovskite phase with tetragonal structure, and are polycrystalline materials with no evidence of preferential orientation.
Soergel Piezoresponse force microscopy (PFM), Journal of Physics D: Applied Physics [J]. 2011:44 464003-01-17 [8] H.