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NEPE Propellant Ignition and Combustion under Laser Irradiation Hongmei Wanga, Xiong Chenb, Chao Zhaoc School of Mechanical Engineering, Nanjing University of Science &Technology, Nanjing, China awhm203@163.com, bchenxiong@njust.edu.cn, czhaochao203@163.com Keywords: Solid propellant, Laser irradiation, Ignition delay time, Temperature distribution Abstract.
Rafi Ahmad [8] considered material spectral absorption properties of three different solid motor propellant which were placed under laser, and found that the double-base propellant undergo deflagration prior to ignition; Y.
Kuo: AIAA 25th Aerospace Sciences Meeting (Reno, Nevada, January 12-15, 1987)
Kuo, et al: International Journal of Energetic Materials and Chemical Propulsion, Vol. 5 (2002), p.284
Hiyamizu, et al: Journal of Propulsion and Power, Vol. 24 (2008) No.6, p.1355

Reticulated shell structure of the link rod, diameter rod and the structure of diagonal adopt BEAM188 bar, material selection model for ideal elastic-plastic model.
Material nonlinearity according to Von Misses yield criterion and its corresponding flow rule to solve the geometric nonlinear under great strain and large deformation.
China Safety Science Journal，2006,2;64-70
Journal of Harbin institute of technology university，2011，43（4）: 12~17 [4] Zhu Xiaohua,Yu Hongxia, Finite element analysis of ANSYS advanced engineering examples chosen [M].Beijing: Electronic Industry Press, 2004
[5] Editorial Board , Spatial reticulated shell design and construction technology and the engineering examples [M].Beijing: China Science and Technology Culture Press, 2006

The material of tower and web member is 20# seamless steel tubes.
There is 45°slip line in the web member which formed by the relative slippage of internal structure in material.
The force-deformation curve is nonlinear at 280KN, which means the material become into the nonlinear stage.
References [1] Kang-Su Lee and Hyung-Joon Bang: International Journal of Precision Engineering and Manufacturing.
[5] Baochun Chen and Wenjin Huang: China Civil Engineering Journal.

Fig.1 The cross-section of composite CFST column Fig.2 Space joint model Establishing and solving of the model Material constitutive.
Material performance indicators are shown in Table 1.
Journal of Yangtze University (Nat Sci Edit), Vol. 6(4), (2009), p. 98-100
Journal of Shenyang Jianzhu University ( Natural Science ), Vol. 29(4), (2013).p. 612-621
Science Press, (2007)

The problem relating historical deformation, such as viscoelastic material model and the time effect of inertia (dynamic problems), must use incremental method.
In the loading process, the failure meeting any criteria set, will cause the material damage.
References [1] Ren qing-wen: status quo and problems on safety analysis of high arch dam. journal of hydraulic engineering (In Chinese).
Chinese journal of rock mechanics and engineering (In Chinese).
Beijing science press, China 2005: p. 30-45

Two reviews, one describing the American Society for Testing and Materials(ASTM) standards for fire debris analysis and the other listing recent advances in a variety of areas related to fire debris analysis, have also been published in 2006 and 2007[3].
And maybe more factors will be taken into consideration such as time, space, the degree of burning, the fire extinguishing materials, temperature etc.
Journal of University of Science and Technology of China, Vol. 12 (2006)p. 1331-1335 [2] Dan Muller, Aharon Levy, Ran Shelef.
Forensic Science International .
Forensic Science International .

Investigation on Ce Addition on Microstructure and Martensitic Transformation of a Ti51Ni49 Shape Memory Alloy Ai-lian Liu1, Nan-nan Mao1, Jia-wen Xu1 and Wei Cai2 1School of Materials Science and Engineering, P.O.
China 2Department of Material Physics and Chemistry, P.O.
Box 405, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001 xujiawen@263.net, liuailian@yeah.net, weicai@hit.edu.cn Keywords: TiNi shape memory alloy, Ce; Microstructure, Martensitic transformation Abstract.
Zhao: Materials Science Forum, Vol.475-479 (2005), p. 1973
Journal of Alloys and Compounds, Vol. 437 (2007), p. 339

Interfacial microstructures and kinetics of Sn2.5Ag0.7Cu/Cu Yaoli Wanga, Keke Zhangb, Chenyang Lic, Lijuan Hand and Qingzhi Zhange Material Science & Engineering College, Henan University of Science & Technology, Luoyang 471003, China awangyaoli001@163.com, bzhkeke@mail.haust.edu.cn,clichenyang816@163.com, dhanlijuan.1201@163.com,e379926421@qq.com Key words: SnAgCu solder alloy, aging, interfacial microstructure, growing dynamics, activation energy.
Experimental Material and Procedure Experimental Material.
The raw materials are Sn, Ag, Cu (purity 99.9wt%) and the Sn2.5Ag0.7Cu solder alloy was fabricated in non-consumable melting furnace (type ZHW-600A) at the vacuum 5×10-3Pa.
Rare metal materials and engineering, Vol. 38(2009),p107 [7] K.S.
Journal of Alloys and Compounds, Vol. 352(2003), p226

The DBR composed of two optically contrasting materials is a multilayer device , and each layer of it has an optical thickness of a quarter of the wavelength[10].
A series of materials are selected for the terahertz DBR, for example:polypropylene/silicon[11], tin (IV) sulfide/silica [12], polypropylene/TiO2 doped polypropylene[13] and silicon/air[14].
These earlier studies focus on finding materials and fabrication techniques suitable for the operation of the multilayer structures in the THz band[15].
Acknowledgements This work was financially supported by the National Natural Science Foundation (60907046), the National Natural Science Foundation (2009A140008).
Ding: Chinese Journal Of Lasers, Forum Vol. 36 (2009), p. 2213(In Chinese) [6] Z.

Materials and methods Site characteristics.
The soil is gray brown purple paddy soil (Hapli-Stagnic Anthrosols in Chinese Soil Taxonomy) developed from purple parent material of Mesozoic sandstone formation.
Wei, et al.: Plant Nutrition and Fertilizer Science Vol. 10(2004), p. 343-348, 354, in Chinese
Ma, et al.: Journal of Soil and Water Conservation Vol. 21(2007), p. 72-75, 179, in Chinese
Wei, et al.: Journal of Soil Science Vol. 29(1998), p. 236-238, in Chinese.