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Therefore, warpage control in the reflow process is particularly important. [2] At present, warpage improvement focus on three aspects: structure optimization, material selection and process optimization.
The experimental method requires a large number of samples and materials and its costs high.[3] In this paper, we combine the Taguchi Design method and software simulation, analysis and optimize the warpage in package stack (Package on Package, PoP).
Journal of GuiLin university of electronic technology.2009,10
[5] Wu Zhenfan,Sun Baoshou,Zhang Yong, Injection molding warpage optimization based on Taguchi experimental design.Journal of NingBo University(NSES), Vol 24 No.3
[6] Lu Xuehong, Khim L S.A statistical experimental study of the injection molding of optical lenses[J].Materials Processing Technology,2001,113:189-195

It is obvious to add geo-grid as a reinforcement material in square slope strengthening.
It can accurately simulate plastic flow and damage of the material.
Beijing: Beijing Science and Technology Press, 1994
Journal of China & Foreign Highway .1995,15 (l): 48-51
[6]WANG Feng-jiang, WANG Laigui.Hazards of tail reservior and its engineering control[J].The Chinese Journal of Geological Hazard and Control. 2003,14(3):76-80.

It can be said that a catalytic converter consists of steel cover plate or steel box, monolithic substrate (used to make tubular walls), washcoat (as binder) usually alumina on which catalyst materials like Pt, Rh, Pd, Ti02/Al203 are dispersed with various ratio(s).
Material selection for catalyst In this study, several stock solutions with different aqueous molar ratios and weight ratios were used.
Material selection for substrate The substrate material is stainless steel, as it is widely used in the automotive exhaust system not only due to its advantages in mechanical and physical properties but also low-cost (Bodeef al 1996).
Wash coat material Titanium dioxide, Ti02 served dual functions: a reduction catalyst and a titanium substance for the wash coat.
Farahat, Determination of the catalytic converter performance, Journal of Petroleum Technology and Alternative Fuels Vol. 2(7), pp. 111-131, July 2011 [6] Sanchita CHAUHAN, Catalytic Converters for Propane Oxidation, Journal of Natural and Environmental Sciences, Vol 1, No 2 (2010)

Arsenal wall cracking case Reinforcement Design Scholars has already to study Sleeve Valve Pipe equipment, materials and technology and other engineering applications technology [1, 2], or the mechanism of Splitting Grouting soil [3].The project has been the precedent for using Micropile in reinforce landslide areas, mechanism and failure mode of bearing micropiles.
If depth of drilling is less than 40m, the way of sealing is sets of shell material.
Before grouting materials should be done a slurry mixture ratio test in the laboratory (with ratios of 1:1; 1:1.1; 1:1.2).
Civil Engineering Journal, 2011, 44 (4): 120-128.
Journal of Engineering Geology, 2009, 17 (5): 669-674.

Design of an Online Grain Moisture Detection System Yingli Ding Liao ning Institute of Science and Technology, Benxi , China Tinkle8285@163.com Keywords: grain moisture, capacitive sensor, online detection Abstract.
Introduction Grain is the material basis of human survival, plays a pivotal role in the national economy and various industries.
The indirect method is by measuring physical quantities related to the water (e.g., the conductivity material, capacitors, etc.), to detect the corresponding measured moisture content of the material, this method is generally fast, easy to achieve on line detection.
References [1] Yingli Ding, Sensor Technology, 2003(4):54~56.in Chinese [2] Decai Lv, Optimum Design of an Internal 8-electrode Electrical Capacitance Tomography Sensor Array, Advanced Materials Research, 2012,03 [3] Zhaosheng Teng, Journal of Scientific Instrument,2000,21(2):111~114.in Chinese [4] Decai Lv, the research of high voltage electrical capacitance tomography system, Applied Mechanics and Materials, 2013,02 [5] Bonian Jia, Pu Yu, Sensor Technology, NanJing: Southeast University Press,1996.105-108. in Chinese [6] Zhaosheng Teng, Journal of Agricultural Engineering, 2004(5) .in Chinese

Experiment Raw material of TC21 alloy in the experiment was provided by Western Superconducting Technologies Co.
Sha, Resistivity study and computer modelling of the isothermal transformation kinetics of Ti–8Al–1Mo–1V alloy, Journal of Alloys and Compounds. 333 (2002) 122–132
[3] Chang Hui, Gautier2, Bruneseaux, Zhou Lian, β→α Isothermal Phase Transformation Kinetics in Ti—B19 Metastable Titanium Alloy, RARE METAL MATERIALS AND ENGINEERING. 35(2006),1695-1699
Rahim, F.H, (Sam) Froes, Kinetics of martensite decomposition in Ti-6Al-4V-xH alloys, Materials Science and Engineering A. 359 (2003) 137-149
Metallurgical and Materials Transactions. 1994, 25A: 461-472

The determination of solution temperature for NCu30-4-2-1 alloy Huang Siqi1, a, Ai yunlong1, b, He wen1, c, Shen Xiaorui1,d 1 School of Material Science and Engineering, Nanchang Hangkong University, Nanchang Jiangxi province 330063, China a13879151325@163.com, bayunlong@126.com, cwshw82@163.com, d569873010@qq.com Keywords: NCu30-4-2-1, solution temperature, microstructure, in situ observation, high temperature metallurgical microscope Abstract.
Transactions of Materials and Heat Treatment, vol.30(2009), p.105 (In Chinese) [2] A.
Metal Science and Heat Treatment, 48(2006), p.364 [3] Zhijun Yang, Xianmin Li, Zengmin Wang, et al.
Rare Metal Materials and Engineering, 26(1997), p.47 (In Chinese) [4] Ming Sun, Wenjun Ye，Songxiao Hui, et al.
Chinese Journal of Rare Metals, 36(2012), p.36 (In Chinese) [5] Bin Wang，Zhengdong Liu，Shichang Cheng，et al.

Finite Element Analysis on the Blade Structure of Centrifugal Pump Wu Lan-Ying 1, a, Wang Yan-Lin2, b * 1School of Applied Science, University of Science & Technology Beijing, Beijing 100083, China 2Fangda Special Steel Technology Co., Ltd.
Based on the large amount of relevant materials, in this paper we choose the Pro/E to set up the three-dimensional parameter model of the impeller, and the stress of the individual blade for the impeller has been carried using the ANSYS, the stress distribution and concentration of single blade in the impeller are analyzed under the different pressure field of the blade structure surface, and the fatigue failure of blade is also studied.
Table.1 The material characteristic parameters of blade structure Density (g/cm3) Elastic modulus (GPa) Poisson ratio Yield strength (MPa) Ultimate strength (MPa) 8.8 110 0.33 96 195 Fig.1 the structure of blade and finite element analysis model Through calculating we get the analysis results under the two different load as shown in Fig.3, Fig.4, and Fig.6, which show that the maximum displacement of the blade for the centrifugal pump is in the root under the uniform pressure, and the displacement of blade tail is very small, the maximum stress is in the blade roots with the upper and lower constraint department.
The calculated results show that the fatigue strength of the blade is not only with the material performance, but also with the cross-section shape, size and surface conditions etc. in the external force, the stress area of blade increases rapidly, it’s easy to lead to the stress concentration, which has a great impact on the fatigue strength, so the fatigue limit of the blade with the stress concentration is decreased more obviously than the fatigue limit of the smooth blade.
Acknowledgment Work was supported by the National Natural Science Foundation of China (Grant No. 10972030) References [1] S Chu: Journal of Turbo Machinery Vol. 117(1995), p.30 [2] H Xu: 3nd International Conference on Pumps and Fans.

Acknowledgements The project is supported by the National Natural Science Foundation (51275004).
[2] Said Ghani Khan, Jamaludin Jalani, Guido Herrmann, etc al: Lecture Notes in Computer Science Vol. 68(2011), p.299-310
[4] Wang Zhiheng, Bao Guanjun, Zhang Libin, etc al: Journal of Central South University of Technology Vol. 18(2011), p.1105-1114
[5] Dexu Geng, Ji Zhao，Lei Zhang, etc al: Applied Mechanics and Materials Vol. 46(2011), p. 2877-2882
[6] Xiaomin Liu, Yiqiang Wang, Dexu Geng, etc al: Advanced Materials Research Vol. 422(2012), p.529-533.

Sakka, Sol–gel science and technology.
Kuan, Preparation, characterization and properties of novolac-type phenolic/SiO2 hybrid organic-inorganic nanocomposite materials by sol–gel method, Journal of Polymer Science Part A: Polymer Chemistry. 41 (7) (2003) 905–9 13
Celik Development of flame retardancy properties of new halogen-free phosphorous doped SiO2 thin films on fabrics, Journal of Applied Polymer Science. 105 (6) (2007) 3747–3756
Combustion behavior of polyester, Fire and Materials. 35 (2011) 397–409
Emen, Formation of fire retardant properties in elastic silica coatings for textile materials, Materials Science Forum. 1006 (2020) 25–31