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Introduction Laser milling is a new 3D machining method by removing materials with high energy laser beam according to appointed patterns, which works as same as that of mechanical milling on manufacturing work pieces [1~3]。
Fig.2 Schematic representation of GA optimizing BP networks procedure Experiments and Simulation Laser milling experiments Experimental materials adopt Al2O3 ceramic with a purity of more than 99%.
Experimental analysis of the laser milling process parameters[J].Journal of Materials Processing Technology,2007, 191 :220-223 [2] Yinbo Zhu, Jianzhong Zhou, Shu, Huang etal.
Laser Application in Processing Brittle Materials, CHINESE JOURNAL OF LASERS, 2009(6):143~146(In Chinese) [3]Tsai CH, Chen HW Laser milling of cavity in ceramic substrate by fracture-machining element technique.
Int J Adv Manuf Technol 2011 (54):567–578 [6] Davim JP, Oliveira C, Barricas N, Conceicao M Some experimental studies on CO2 laser cutting quality of polymeric materials.

Solid65 element is used to simulate chip stone concrete material of abutment’s structure.
Materials of abutment’s basement and structure are the same and solid65 unit is yet adopted.
Material of the wall structure adopted C15 chip stone concrete, elastic modulus equal to 4.2×103MPa, Poisson ratio equal to 0.167 and density equal to 2500kg/m3.
Kuang, “Field test Study on Bridges Bonded with Carbon Fiber Reinforced Plastic”, Journal of Tongji University, 30(2) (2002), p.146-150.
Petrou, “Full-scale Experimental Investigation of Repair of Reinforced Concrete Interstate Bridge Using CFRP Materials”, J.

Influences of concrete-water ratio on compressive strength of recycled concrete Experiment materials.
The experiment materials include P.O 42.5 cement, nature granite gravel, recycled coarse aggregate of simple crushing (for class III), recycled coarse aggregate of particle shaping (for class I and II), river sand, water reducer and water.
Journal of Qingdao Technological University. 2009, 30(4): 1-4,23.
Journal of Shaoxing College of Arts and Sciences. 2007, 27(9):52-55.
Journal of Building Materials. 2003, 6(2):129-134.

.: Solar Energy Materials & Solar Cells Vol. 90 (2006), p. 2099
Braga et al.: Solar Energy Materials & Solar Cells Vol. 92 (2008), p. 418
Cretella: Journal of Materials Science Vol. 17 (1982), p. 3077
AIME Journal of Metals July (1952), p. 747
Cuevas: Journal of Applied Physics Vol. 97 (2005), p. 33523.

Materials and Methods Sampling The study material originated from three 27-year-old trees, which was collected from Jianfenglin Experimental Forest Farm, Hainan province, P.R.China. 8 provenances teak have been tested, from India, Thailand, Nigeria and Myanmar, these species came from Seed Centre of Danmark.
Acknowledgements We are grateful to Professor Liang Kuannan , Master Lai meng, The Research Institute of Tropical Forestry,CAF, for providing the plant material, and Peng Pengxiang, Zhong Tuhua, College of Forestry, South China Agricultural University, for providing help.
Journal of Analytical and Applied Pyrolysis, 1997, 43: 115-123
Journal of Applied Polymer Science, 2004, 93:1484-1492.R.J.
Clem: submitted to Journal of Materials Research (2003)

Introduction All Pre-stressed steel structures are mainly composed of rigid components, cable materials, anchor device and other materials.
International Journal of Space Structure Vol. 20(2)( 2005) , p.115-124 [2] Zhang qilin .
Journal of Tongji University: Natural Science Vol. 33(2005), p. 149 [4]Stanilav Kamet，Zuzana Kokuruduva.
Journal of Engineering Mechanics Vol. 132(2006) , p.119 [5]Liu Zhansheng, Chen Zhihua.
Advanced Materials Research, Vols 97-101, p.4415 [6] Zhihua CHEN, Zhansheng LIU.

Therefore, it is possible to improve the surface integrity of the workpiece since the materials removal mechanism is changed in quick-point grinding process.
The effects of the strain rate on the ground surface roughness and the materials removal ratio were analyzed.
In Fig.2, if S is the cut groove section area with the single grit, S1 and S2 the pile-up section area, accordingly, the materials removal ratio is ξ1η −=
It can be achieved to machine ductile materials with "brittleness"[5, 6].
Zhou and H.Eda: Journal of Materials Processing Technology, Vol.129 (2002), p.19-24

In recent years, lots of studies on casting technology, material property, theory of foundations and semi solid processing technology was undertaken [2], and the die-casting products which mass produced increased year by year.
Acknowledgements This work was financially supported by the National Natural Science Foundation (51165013).
Tusek: Computational Materials Science, Vol. 43 (2008), p. 1147 [4] P.
Jens: Journal of Materials Processing Technology, Vol. 152 (2004), P.228 [5] S.
Jia: Journal of Materials Processing Technology, Vol. 139 (2003), p. 457

Fig. 6 shows analysis model and material properties for each layer.
Fig. 6 Analysis model and material constants Analysis Results and Discussion.
Phillpot, Materials Today, June 2005, pp. 22-29
Bartsch et. al., International Journal of Fatigue, Vol. 30 (2008), pp. 211-218
Ito et al., Journal of the Society of Materials Science, Japan, Vol. 47, No.7 (1998), pp. 672-677 (in Japanese).

Introduction The preparation of nano materials has gradually become a popular research area.
Experimental Section The process parameters are Ti foils (99.8%, 3 mm) as substrate, C2H6O2, HF, NH4F and deionized water as electrolyte materials, platinum foil (20 mm × 10 mm) as the counter electrode, and IT6720 (ITECH) as the constant voltage source as shown in Table 1.
BeiJing: Science Press, 2011: 18-23 [6] Gong D, Grimes C, Varghese O, et al.
Journal of Physical Chemistry C, 2007, 111(41): 14992-14997 [10] Z Wu, S Guo, H Wang, et al.
Energy & Environmental Science. 2011, 4: 1065-1086 [12] JM Macak, SP Albu, P Schmuki.