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Taking the foregoing into account, analyses that aim at determining the causes of crack formation and development should be conducted taking into account the knowledge of mechanics and materials science [5,6].
Mutwil, Degradation of cast steel parts working in power plant pipelines, Journal of Achievements in Materials and Manufacturing Engineering 18 (1-2) (2006) 219-222
Cieśla, Crack initiation in steel parts working under thermo-mechanical fatigue conditions, International Journal of Computational Materials Science and Surface Engineering (IJCMSSE) 1 (4) (2007) 424-437
Cieśla, Study on Cracking Process of Power Boiler Element, Production Editor, IOP Conference Series: Materials Science and Engineering 35 (2012) 012017 1-11
Junak, Low-cycle fatigue life of steel P92 under gradual loading, Production Editor, IOP Conference Series: Materials Science and Engineering 35 (2012) 012014 1-11

Besides, various material computational models, such as elastic-perfectly plastic mode and Marshall buckling model, were employed to simulate material nonlinearity behaviors [7].
Material computational model.
Initial imperfection and materials model.
For computing test1, WQ1, WQ3, WQ4 adopt Marshall model to consider material nonlinearity.
[5] Fan Zhifei, Zeng Guohua and Dong Cong, in: Study of stochastic imperfection method for stability analysis of single layer lattice shell, Journal of Hebei Institute of Architectural Science and Technology, 2006, 23(3): 11-14

Micro-EDM need complicated preparation and can use only limited materials with low efficiency.
Inoue [20] launched studies on micro-extrusion of new materials.
Lawrence Yao: Journal of Manufacturing Science and Engineering vol. 124 (2002), p. 369-378
Eckstein: Journal of Materials Processing Technology vol. 103 (2002), p. 35-44
Lawrence Yao, Wenwu Zhang: Journal of Manufacturing Science and Engineering vol. 124 (2002), p. 369-378

Study on oxidation resistance of tool materials for machining superalloy Tengda Wang1，a, Erliang Liu1，b,Zhen Li1 1College of Mechanical and Power Engineering, Harbin University of Science and Technology, 150080 Harbin, China atengdawanga@163.com,belliu@163.com Keywords: superalloy, oxidation resistance, grain size, tool material.
In terms of cutting tool materials, high-speed steel and part of cemented carbide tools wear rapidly and even chipping and inefficiency, which is unable to meet the machining of superalloy[5].
Acknowledgements This research is supported by the Science and Technology Major Project of National High NC Machine Tools (2014ZX 04001020-011).
[2] HAN Zhiyu, ZENG Guang, LIANG Shujin, et al, Development in Powder Production Technology of Ni-Based Superalloy[J], MATERIALS CHINA, 33(2014) 748-754
Journal of Materials Processing Technology, 86(1998) 1-16

Synthesis of Hole-transporting Materials Containing Triarylamine and Its Properties Wenzheng Gao 1,a, Xianggao Li 1,b and Shirong Wang 1,c 1School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China agaowenzheng1026@126.com,blixianggao@hotmail.com(corresponding author), cwangshirong@tju.edu.cn Key words: Hole-transport materials; Triphenylamine; Synthesis; Performance Abstract.
Improve the glass transition temperature of the hole-transport materials is currently an important direction.
Conclusions In summary, two hole-transporting materials based on triphenylamine derivatives have been synthesized and characterized.
Triphenylphosphinechloromethylene[J], Journal of the American chemistry society, 83(1961) 1617
Huang, Organic Electroluminescent Materials & Devices, Beijing, Tsinghua University Press, (2007) [9] W.

CFRP contains at least two phases of materials to possess different mechanical properties, which leads to the different mechanism of material removal from that of machining single-phased materials, such as metals [1-3].
Miranda: Journal of Materials Processing Technology, Vol.92-93(1999), pp.135-140
[3] Y.G.Wang, X.P.Yan: Advanced Materials Research .Vol. 215 (2011), pp.14-18
[6] X.Wang, L.J.Wang, J.P.Tao: Journal of Materials Processing Technology, Vol.148 (2004), pp.239-244
Paulo Davim, Pedro Reis: Journal of Materials Processing Technology, Vol.160 (2005), pp.160-167

Materials and methods 2.1 Materials PET pellets used to produce electrospinning nanofiber mat were purchased from Sinopec Yizheng Chemical Fibre Company Limited.
China, 111 Project B07024 “Biomedical Textile Materials Science and Technology”.
Journal of Applied Polymer Science. 2006:102(2): 1285-1290
Journal of Membrane Science. 2006.281:581-586 [5].
Journal of Polymer Science: Part B: Polymer Physics, 2008,10:460-471 [6].

Building and furnishing materials in architectural design Building and furnishing materials has a positive role in the role in the architectural design.
The selection of building insulation materials Turn classified according to the quality of the material and insulation construction materials can be divided into organic insulation materials, three types of inorganic insulation materials, and metal insulation materials.
Building materials in architectural design practice[J].
Managers’ Journal. 2010(23)
Science and Technology Information. 2007(26).

Test equipment and specimen In this test, the requirement equipments are:  multi-function experimental rig of Mechanics Materials (shown in Fig. 5), XL2118A type strain comprehensive parameter tester, strain gauge, ruler, vernier caliper, etc.
Fig.5 Multi-function experimental rig of Mechanics Materials Fig.6 The specimen installation Test results The same loading process is repeated three times, and the test results are shown in table 1.
Material Mechanics[M].Beijing: High education publishing house,1992
A new finite element solution for internal force and frequencies analysis of the compressed bar[J].Science technology and engineering, 2009,9(21): 6495-6498
Series calculation method of critical load of compression bar with one end fixed and one end hinged[J].Journal of university of science and technology Liaoning, 2011, 34(4):349-351

Wagoner, “Simulation Of Springback”, International Journal of Mechanical Sciences, Vol. 44, pp. 103-122, 2002
Yasar, “Effect of the blank holder force on drawing of aluminum alloy square cup: Theoretical and experimental investigation”, Journal of Materials Processing Technology, pp. 152 – 160, 2008
Boyce, “Accommodation of Springback Error in Channel Forming Using Active Binder Force Control: Numerical Simulations and Experiments”, Journal of Engineering Materials and Technology, pp. 426-435, 1996
Bao, “Variable Blankholder Force in U-shaped Part Forming for Eliminating Springback Error”, Journal of Materials Processing Technology, pp. 259-264, 2002
Feng, “Sensitive factors in springback simulation for sheet metal forming”, Journal of Materials Processing Technology, pp. 217-222, 2004